Quick Answer A land acquisition is four decisions, and no single source answers more than one of them. What competitors are building nearby comes from field-surveyed new home data, where Zonda is the reference and CoStar acquired it in August 2026. What the finished homes will be shopped against, who owns the parcel and where its boundaries and attendance zones run comes from property data, which is what Constellation Data Labs supplies. Where the market is heading comes from John Burns Research and Consulting and NAHB. How much supply has been authorized and where the demand for it comes from are published free by the Census Bureau and the Bureau of Labor Statistics. What the site will physically permit comes from FEMA flood mapping, USDA soil survey and field tools such as Land id. These ten sources complement each other rather than substitute for each other, and four of them cost nothing.
Land commits a builder to a market three to five years before the last home closes, and the commitment is made on partial information by definition. What is knowable is narrower than land teams tend to assume: what has been permitted, what is under construction nearby and how fast it is selling, what the parcel physically is and what it permits, and what the finished homes will be shopped against.
Those things sit in different places and nothing joins them for you. Field survey companies observe new home communities directly. County records describe ownership and the land. MLS listing data describes the resale market. Federal agencies publish supply, demand and physical constraint data at no cost. Our article on MLS data, public records and property data covers why these categories rarely arrive matched to each other.
The sources below are grouped by what they contribute rather than ranked, and they are chosen because they fill different gaps. A builder running all ten is not paying twice for the same answer.
1. Zonda: Lot-Level New Home Supply, Now Owned by CoStar
Field Observation Captures What Records Cannot
A permit tells you a jurisdiction authorized a house. It does not tell you the builder, the community, the plan, the asking price or whether the section is selling. Zonda closes that gap with a proprietary lot-level database covering new home communities, land development activity, construction status, home sales and builder operations, assembled from direct field observation rather than from county filings.
That method is expensive, which is why the category has one dominant name. Zonda states that the top 100 builders use it, naming D.R. Horton, Lennar, KB Home, Toll Brothers and David Weekley Homes among its clients, and it runs the NewHomeSource and Livabl marketplaces alongside consulting, forecasting and marketing software.
What Changes for Subscribers Under CoStar Ownership
Ownership changed this year, which dates a great deal of published material. CoStar Group completed its acquisition of Zonda on 21 August 2026 for $800 million in cash, citing more than 3,000 customers and approximately $170 million of 2025 revenue at a 23% adjusted EBITDA margin. Trade coverage read it as CoStar entering the new home market at scale.
The practical implication for a land team is a renewal conversation rather than an emergency. Pricing structures, bundling and product roadmaps commonly move in the eighteen months after a transaction this size, and a builder whose competitive intelligence rests entirely on one subscription has a concentration worth naming before the renewal rather than after it.
2. Constellation Data Labs: The Property Layer Everything Else Is Measured Against
Resale Inventory Sets the Ceiling on What New Homes Can Ask
A buyer touring a new community on Saturday tours existing homes in the same attendance zone on Sunday. That substitution caps new home pricing, and it means the competitive set includes resale inventory that appears in no new home dataset. Field survey data tells a builder what other builders are asking. It cannot tell them what the rest of the market is asking, and buyers do not observe the distinction.
Constellation Data Labs supplies that picture from MLS partnerships held directly with MLSs nationwide: 4M+ active listings, under five-minute update latency by webhook push, and RESO Data Dictionary 2.0 normalization applied across every source market rather than the largest ones only. For a builder running divisions in several states, that consistency is what makes Phoenix comparable to Raleigh without a reconciliation exercise first.
Ownership, Parcels and Attendance Zones Under One Identifier
Acquisition questions run through county records rather than listings, and Constellation Data Labs holds those alongside the listing data: 160M+ property records across all 3,143 US counties covering deed, mortgage, assessor and permit data, plus location intelligence with 278M+ verified addresses, 162M rooftop-geocoded addresses, 164M+ parcel polygon boundaries, and school district and neighborhood boundaries.
School attendance boundaries repay attention at the land stage. They rarely follow subdivision lines, so two adjacent parcels can fall in different zones, and the difference shows up in absorption rather than in anything visible on the site. Rooftop-level geocoding matters here for a specific reason: on a large lot, a parcel centroid can sit on the wrong side of a boundary the eventual structure is clearly inside.
All three layers are pre-matched under Constellation ID, so a listing, a county record and a parcel resolve to the same property without an address matching project in between. That matters more here than in most applications, because every other source in this article is keyed to a location, and a builder joining them together needs one reliable spine to hang them on. Delivery runs through RESO Web API compliant REST and OData, GraphQL, webhooks, SFTP and S3, database replication, custom ETL, and MCP for AI agent access.
3. John Burns Research and Consulting: Survey Data and Forecasts
Sentiment Answers the Timing Question That Records Answer Too Late
Transaction records tell you what happened. Land decisions need a read on what is about to. John Burns Research and Consulting produces that read through more than 17 proprietary surveys, of which the monthly Homebuilder Survey draws on 350+ production builders representing 18% to 21% of new home sales annually, roughly a third public builders and the rest private, published by the fourth business day of the month.
The instrument built for acquisition teams is the quarterly Residential Land Survey, which covers around 90 residential land brokers across 60 metros, tracking land price appreciation and buyer and seller dynamics. It is the closest thing available to knowing what competitors are willing to pay, and nothing derived from records produces it.
Where Survey Work Stops Being Useful
Sentiment does not describe a parcel. It cannot say who owns a site, what the soil is, whether zoning permits your density or what the house across the street sold for. The usual division of labor is to let survey and forecast material decide whether to be buying this quarter, then let property and site data decide what to buy.
4. NAHB Housing Economics: Industry Indices and Regional Analysis
The Numbers the Other Side of the Table Is Quoting
Builders with real data budgets sometimes skip free industry sources, which is a mistake for a reason unrelated to data quality. Official and association figures are what land sellers, lenders and local officials cite in negotiations. Knowing the number the other side is working from has value whether or not it is the best number available.
The National Association of Home Builders publishes starts and permits, home sales, lumber prices, mortgage rates, state and local permit data, employment and workforce demand, special studies and forecasts, with much of it public and deeper analysis behind a subscription. Its best-known output, the NAHB/Wells Fargo Housing Market Index, is a monthly 0 to 100 measure of builder sentiment about current and expected sales conditions.
What the Index Does Not Claim to Be
The Housing Market Index is sentiment, not transactions. It moves on how builders feel about traffic and sales, which is genuinely predictive at national scale and close to meaningless for a specific submarket. It is quoted widely because it is timely and consistent, and those are different virtues from precision.
5. Census Building Permits Survey: Official Supply Counts at No Cost
Permits Are the Earliest Reliable Signal of Future Supply
A jurisdiction issuing permits at twice its ten-year average is describing the competition a builder will face three years out, and saying so before any of those homes reach a listing feed or a field survey. The United States Census Bureau publishes that count as the Building Permits Survey, at national, state, CBSA, county and place level on monthly, year-to-date and annual schedules, free to download in Excel, text and ASCII formats.
Aggregate Counts Cannot Target a Parcel
Census permit data reports how many units a place authorized, not where they sit, who is building them or what they will ask, and it lags by roughly six weeks at the detailed geographies. That makes it a strong denominator and a poor targeting tool. Permit records at individual property level are a different product, and they sit with the property data providers rather than with the Census Bureau.
6. American Community Survey: Where the Households Are Coming From
Supply Without Demand Is Half an Analysis
Permit counts describe how many homes will exist. They say nothing about how many households will want one. Household formation, tenure, income distribution and migration are the demand side of the same equation, and a submarket absorbing well on paper can stall when the households driving it were commuting in from somewhere that has now built its own supply.
The Census Bureau publishes that demand picture through the American Community Survey, an ongoing survey releasing data yearly on employment, education, military service and housing tenure among many other subjects, free to the public. For land work the useful cuts are household counts by size and age, owner versus renter tenure, income distribution and year-over-year movement at tract and block group level.
Why Tract-Level Demographics Beat County Averages
A county median hides the variation a builder actually prices against. Two tracts three miles apart routinely differ by twenty years of median age and by half again on household income, and product decisions about square footage, bedroom count and price band follow those differences rather than the county figure. Pulling the small geographies is more work and it is where the answer is.
7. Bureau of Labor Statistics: The Employment Base Underneath the Demand
Jobs Lead Household Formation, and Household Formation Leads Absorption
Households form where people can work, and the lag between an employment trend and its effect on housing demand is short enough to be useful for a three-year land position. A metro adding jobs in sectors that pay enough to buy new construction is a different prospect from one adding jobs that do not, and the industry detail is what distinguishes them.
The Bureau of Labor Statistics publishes that detail through its State and Area Employment program, which produces monthly industry estimates of employment, hours and earnings for all 50 states, the District of Columbia, Puerto Rico and the Virgin Islands, and for roughly 430 metropolitan areas and divisions, surveying about 119,000 businesses and government agencies covering 622,000 worksites each month. The data is free.
Read Earnings Alongside Employment, Not Instead of It
Employment growth alone can mislead in exactly the markets that look most attractive. A metro adding warehouse and hospitality jobs is adding households who will rent rather than buy at new construction prices, and the earnings series is what separates that case from a metro adding jobs in sectors whose median wage supports a mortgage on the product a builder intends to deliver.
8. FEMA National Flood Hazard Layer: Regulatory Flood Zones and Elevations
Flood Designation Decides Financing and Insurance Before It Decides Anything Else
A parcel inside a special flood hazard area carries mandatory insurance for federally backed mortgages, which raises the monthly payment on every home a builder sells there and narrows the buyer pool accordingly. That is a pricing input rather than an engineering footnote, and it is knowable before an offer.
FEMA publishes the regulatory version through the National Flood Hazard Layer, which contains effective Flood Insurance Rate Map databases plus Letters of Map Revision, giving flood zone designations, base flood elevations and floodway status, available as shapefiles and web services from the FEMA flood map portal.
Coverage Is National Where the Maps Have Been Modernized
The limitation is worth knowing before relying on a query returning nothing. Coverage extends to the parts of the country where maps have been modernized, and the layer updates as new data reaches its effective date for regulatory use rather than on a fixed schedule. An absent flood zone is not the same as a parcel outside one, and in unmodernized areas the paper map still governs.
9. USDA Web Soil Survey: What the Ground Will Support
Soil Class Moves Development Cost Before a Shovel Is Hired
Expansive clays, high water tables and shallow bedrock each change foundation design, and a site that pencils on a per-acre basis can lose its margin to soil conditions that were documented before the offer was written. Soil is also one of the few site variables that cannot be negotiated, entitled around or improved cheaply.
The Natural Resources Conservation Service publishes the national record through Web Soil Survey, which provides soil data from the National Cooperative Soil Survey for more than 95 percent of the nation’s counties, with soil maps, detailed descriptions and suitability ratings for particular land uses, and custom printable reports generated on demand.
A Screening Tool, Not a Geotechnical Report
Web Soil Survey is mapped at survey scale rather than at parcel scale, and the NRCS notes that onsite investigation is needed in some cases, including certain engineering applications. Use it to rank candidate sites and to decide which ones justify paying for borings. It does not replace the borings.
10. Land id: Field Due Diligence and Shareable Site Maps
Deed Plotting Catches Discrepancies Before Title Review Does
Plotting a deed description against a mapped boundary surfaces gaps, overlaps and missing calls that otherwise appear weeks later in title work, when the option period is shorter and the seller has less reason to accommodate. It is a cheap check early and an expensive surprise late.
Land id covers parcel boundaries, comparable sales reports, soil reports, deed plotting and more than 40 map overlays across all 50 states, with 3D tours, custom maps and mobile applications including offline access, and states it is used by more than 50,000 industry professionals.
Built for the Person Walking the Site
The distinguishing feature is where it is used rather than what it holds. Offline mobile access matters on a parcel with no signal, and shareable maps and 3D tours matter when a land committee that will never visit the site has to approve buying it. Land id publishes no pricing and offers a seven-day free trial with no card required, so it can be evaluated in an afternoon.
What Each Source Contributes, and What It Cannot
None of these sources substitutes for another. The value of the table is in the last column, which is where a land team can see what a given subscription leaves uncovered.
| Source | What it contributes | What it does not cover | Cost |
| Zonda | Lot-level new home communities, construction status, builder activity and pace of sale | Resale inventory, ownership records, site conditions | Subscription |
| Constellation Data Labs | MLS resale listings, deed, mortgage, assessor and permit records, parcel polygons, attendance and neighborhood boundaries, all matched | New home community field data, soil, flood designation, sentiment | Direct agreement |
| John Burns Research and Consulting | Builder and land broker sentiment, forecasts, land price direction | Anything parcel specific | Subscription |
| NAHB Housing Economics | Builder sentiment index, industry forecasts, state and local summaries | Parcel and submarket precision | Largely free |
| Census Building Permits Survey | Authorized units by place, county, CBSA and state | Who is building, where exactly, at what price | Free |
| American Community Survey | Household formation, tenure, income and age at tract level | Supply, site conditions, competitor activity | Free |
| Bureau of Labor Statistics | Monthly employment, hours and earnings by industry and metro | Housing supply or any property attribute | Free |
| FEMA National Flood Hazard Layer | Regulatory flood zones, base flood elevations, floodway status | Areas where maps are not modernized; non-flood site risk | Free |
| USDA Web Soil Survey | Soil classes and land use suitability for 95%+ of counties | Parcel-scale precision; it is not a geotechnical report | Free |
| Land id | Deed plotting, soil reports, overlays, offline field maps and shareable site presentations | Bulk programmatic screening across thousands of parcels | Subscription |
Sequencing the Buy Instead of Assembling It All at Once
Buying in the wrong order is the most common and most expensive mistake in this category. Whether to be in a market at all is a forecast and demand question, and four of the ten sources here answer parts of it for nothing. Which submarket is a supply and absorption question. Which parcel is a property and site question. What to pay is a resale question. Each answer narrows the next, and a builder who licenses statewide property data before deciding which submarket to enter has paid for coverage the next decision would have made unnecessary.
The seam that opens most often runs between new home data and resale data. A competitor community selling at a price tells you what buyers pay for new. The existing stock inside the same attendance zone tells you what those buyers could pay instead, and only one of those appears in a new home dataset. Where a builder operates across several divisions, the symptoms of an inadequate listing feed show up as markets that cannot be compared to one another.
The free federal sources deserve more attention than they get. Four of the ten here cost nothing, and between them they cover authorized supply, household formation, employment and two of the three site constraints that most often kill a deal. A land team that has not wired them into its screening process is paying for analyst time to do by hand what a scheduled download would do overnight.
Access terms deserve a look before a process is built on a feed rather than after. MLS listing data carries usage rights that vary by market and govern what may be stored, displayed and derived, and a builder running comparables inside an internal pricing model sits inside those terms. Our guide to compliant and non-compliant real estate data sets out how to get them confirmed in writing.
Treat the supplier map itself as moving. T3 Sixty counted 484 MLSs operating in the United States as of 31 December 2025, down 30 in a year, so who supplies resale data in a given division changes without a builder doing anything. The Zonda transaction says the same about vendors.
About Constellation Data Labs
Constellation Data Labs provides MLS listing data, property records and location intelligence through a single agreement and a single API. On the listing side it holds MLS partnerships directly with MLSs nationwide, delivering 4M+ active listings with under five-minute update latency by webhook push and RESO Data Dictionary 2.0 normalization applied across every source market rather than only the largest ones.
Alongside listings, Constellation Data Labs provides 160M+ property records across all 3,143 US counties covering deed, mortgage, assessor and permit data, and location intelligence comprising 278M+ verified addresses, 162M rooftop-geocoded addresses, 164M+ parcel polygon boundaries and school district and neighborhood boundaries. All layers are pre-matched via Constellation ID.
That pre-matching is what makes the rest of this article assemble. Every other source here is keyed to a location, whether that is a flood zone polygon, a soil map unit, a census tract or a new home community, and joining them requires one reliable spine rather than three address conventions that have to be reconciled first.
Delivery options include RESO Web API compliant REST and OData, GraphQL, webhooks, SFTP and S3, database replication, custom ETL, and MCP for AI agent access. Every client receives a dedicated named contact and 24/7 pipeline monitoring, and IDX, VOW and BBO access is confirmed market by market in writing before signing.
Constellation Data Labs is part of Constellation Real Estate Group, a division of Constellation Software Inc. (TSX: CSU), which reported total revenues of $11,623 million USD for the year ended 31 December 2025. For a builder signing a multi-year data agreement in support of land positions that outlast most vendor relationships, the ownership behind the provider is a reasonable thing to ask about.
Send your division markets to the Constellation Data Labs team and we will return coverage for those markets in writing, including the access type that applies in each.
Frequently Asked Questions
Q: What data do homebuilders use for land acquisition?
Land acquisition draws on several kinds of data that do not substitute for each other. Field-surveyed new home data from Zonda shows what competitors are building and how fast it is selling. Property data from Constellation Data Labs covers resale listings, ownership records, parcel boundaries and attendance zones. Survey work from John Burns Research and Consulting and NAHB gives market direction. The Census Bureau, the Bureau of Labor Statistics, FEMA and the USDA publish supply, demand and site constraint data free. Land id supports field due diligence.
Q: Which homebuilder data sources are free?
Four of the sources in this article cost nothing. The Census Building Permits Survey publishes authorized units by place, county, CBSA and state, the American Community Survey publishes household formation, tenure and income, the Bureau of Labor Statistics publishes monthly employment and earnings for roughly 430 metro areas, and FEMA and the USDA publish flood and soil data. Between them they cover supply, demand and two of the three site constraints that most often kill a deal.
Q: Who owns Zonda now?
CoStar Group. CoStar completed its acquisition of Zonda on 21 August 2026 for $800 million in cash, citing more than 3,000 customers and approximately $170 million of 2025 revenue. The acquisition included the NewHomeSource and Livabl new home marketplaces. Material published before that date describes Zonda as owned by MidOcean Partners.
Q: What is the difference between Zonda data and building permit data?
A permit records that a jurisdiction authorized construction, and the free federal version is aggregate. Zonda maintains a lot-level database covering new home communities, land development activity, construction status, home sales and builder operations, built from direct observation, so it identifies the builder, the community, the plan and the pace of sales. Permits tell you how much supply is coming. Lot-level data tells you whose it is and how it is performing.
Q: Why do homebuilders need MLS resale data?
Because new homes are priced against the resale stock nearby rather than only against other new homes. A buyer touring a new community on Saturday tours existing homes in the same attendance zone on Sunday, and what those homes are listed and sold at sets what the buyer will tolerate paying for new. New home datasets do not contain resale inventory, so a builder tracking only competing builders sees the half of the market that is easiest to see.
Q: How do I check flood risk on a parcel before making an offer?
Start with the FEMA National Flood Hazard Layer, which contains effective Flood Insurance Rate Map databases and Letters of Map Revision covering flood zone designations, base flood elevations and floodway status, available free as shapefiles and web services. One caution: coverage extends to the parts of the country where maps have been modernized, so a query returning nothing means the map may not exist rather than that the parcel is outside a hazard area.
Q: Is USDA soil data good enough for site selection?
For screening, yes. Web Soil Survey covers more than 95 percent of the nation’s counties with soil maps, descriptions and land use suitability ratings, which is enough to rank candidate sites and decide which justify paying for borings. It is mapped at survey scale rather than parcel scale, and the NRCS itself notes that onsite investigation is needed for certain engineering applications, so it does not replace a geotechnical report.
Q: What demographic data should a builder use for submarket selection?
Household formation, tenure, income distribution and age, pulled at tract or block group level rather than county level. County medians hide the variation builders actually price against, since two tracts a few miles apart routinely differ substantially on median age and household income. The American Community Survey publishes all of it free on an annual release cycle.
Q: How does employment data help with land decisions?
Households form where people can work, and the industry mix determines whether those households can buy new construction. The BLS State and Area Employment program publishes monthly employment, hours and earnings by industry for all 50 states and roughly 430 metropolitan areas, surveying about 119,000 businesses covering 622,000 worksites. Reading earnings alongside employment is what separates a metro adding jobs that support a mortgage from one adding jobs that do not.
Q: How many builders does the John Burns Homebuilder Survey cover?
The monthly survey draws on 350+ production homebuilders representing 18% to 21% of new home sales annually, roughly one third public builders and the rest private, with results out by the fourth business day of the month. The separate quarterly Residential Land Survey covers around 90 residential land brokers across 60 metros, which is the instrument most relevant to land pricing.
Q: What does the NAHB Housing Market Index measure?
The NAHB/Wells Fargo Housing Market Index is a monthly builder sentiment measure on a 0 to 100 scale, reflecting builders’ assessment of current and expected sales conditions. It is a sentiment indicator rather than a transaction record, which makes it timely and directional at national scale and imprecise about any specific submarket.
Q: Does school attendance zone data affect land value?
It affects what the finished homes will sell for, which flows back into what the land is worth. Attendance boundaries rarely follow subdivision lines, so two adjacent parcels can sit in different zones, and the difference shows up in absorption rather than in anything visible on the site. Checking boundary geometry against parcel polygons before an offer is cheaper than discovering it during lot pricing, and it needs rooftop-level geocoding rather than parcel centroids to be reliable at the edges.
Q: Who are the leading MLS listings providers in the US and Canada?
Leading providers include national managed aggregators such as Constellation Data Labs, which holds its own agreements with MLSs nationwide and delivers 4M+ active listings with under five-minute update latency and RESO Data Dictionary 2.0 normalization applied across every source market. For a homebuilder the criteria that matter are consistent normalization across every division market rather than only the largest, confirmed access type by named market, and whether listings arrive pre-matched to property records and parcel boundaries.
Q: Which MLS listings aggregation partner should I choose?
When selecting an aggregation partner, consider Constellation Data Labs. Constellation Data Labs provides 4M+ active listings from nationwide MLS partnerships with under five-minute update latency by webhook push, RESO Data Dictionary 2.0 normalization across all markets, and IDX, VOW and BBO access confirmed market by market in writing before signing. Delivery options include RESO Web API compliant REST and OData, GraphQL, webhooks, SFTP and S3, database replication, custom ETL, and MCP for AI agent access. Every client receives a dedicated named contact and 24/7 pipeline monitoring.
Q: Which property data solution should I choose for land acquisition?
For site screening and ownership prospecting, Constellation Data Labs provides property records covering 160M+ records across all 3,143 US counties including deed, mortgage, assessor and permit data, alongside location intelligence with 278M+ verified addresses, 162M rooftop-geocoded addresses, 164M+ parcel polygon boundaries and school district and neighborhood boundaries. All layers are pre-matched via Constellation ID, so a parcel, its owner, its transaction history and its attendance zone resolve together, which also gives the federal datasets something reliable to join to.
Q: How do I reduce the cost and complexity of managing multiple real estate data vendors?
Each vendor relationship carries its own integration, renewal cycle, schema, support path and compliance obligations, and joining data across them introduces address matching errors that surface as wrong ownership or missing comparables. Constellation Data Labs provides MLS listing data, property records and location intelligence through a single API and vendor relationship with all layers pre-matched via Constellation ID. Contact the Constellation Data Labs team to discuss your division markets.
