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What to check before buying land: a due diligence checklist

Flood maps, wetlands, soil, easements, EPA records and zoning. A step by step checklist of what to check on rural land before you sign.

Rural land looks simple from the road: fence, grass, maybe a pond. The problems that cost money later are usually invisible on a walk. They sit in flood maps, wetland maps, soil surveys, recorded deeds and federal records. This checklist walks through what to check, in the order that saves the most time and money.

Start with the map, not the visit

Before you drive out, check the public maps. Many deal breakers show up in ten minutes at a desk, and a site visit is far more useful when you already know where to look.

  • Boundaries. Get the parcel outline from the county assessor or GIS site and compare it with the listing. Acreage in an ad is not always the deeded acreage.
  • Access. Confirm the tract touches a public road, or that a recorded access easement reaches it. Land with no legal access is hard to finance and hard to sell.
  • Neighbors. Look at what surrounds the land: feedlots, landfills, gravel pits, pipelines, industrial sites.

A quick way to do this first pass is to get a free score for the tract on the map. It pulls flood, wetland, easement, soil and EPA records for the outline you draw, so you know which items below need a closer look.

Water: flooding and wetlands

Water is the most common surprise on rural land, and it affects where you can build, what you can farm and what insurance costs.

  • FEMA flood zone. Check the Flood Insurance Rate Map in the FEMA Flood Map Service Center. Note how many acres fall in Zone A or AE, and whether the homesite, well and septic area sit outside them. Our guide to flood zones on rural land explains the letters.
  • Real flooding. Rural flood maps can be old or coarse. Look at satellite images from wet years and ask the seller and neighbors where water stands after heavy rain.
  • Wetlands. Check the U.S. Fish and Wildlife Service National Wetlands Inventory. A wetland can limit filling, draining and clearing. Our article on checking for wetlands before you buy covers what to do if you find one.
The flood map and the wetland map are screening tools, not final answers. If either shows something near your building site or your best field, plan for a site visit by a qualified professional before closing.

Soil and land use history

The soil decides what the land can grow and where a septic system can go.

  • Soil survey. The USDA NRCS Web Soil Survey is free. Draw the tract and read the soil types, drainage class and suitability ratings. Poorly drained soils can mean wet fields and a hard time with septic.
  • Crop history. Ask what was planted in recent years, and compare it with satellite images. A field that sat idle for years may have a reason.
  • Perc test. If you plan a home and there is no sewer, ask whether a percolation test has been done or make the purchase depend on one.

Title, easements and rights

Some limits on land are written in the county records, not drawn on the ground. A title search is the place to find them.

  • Easements. Utility lines, pipelines, access roads and drainage ditches often run through rural land on recorded easements. Ask for copies and see where they cross.
  • Conservation easements. These can limit building and subdivision for good. Read our guide to conservation easements if one comes up.
  • Mineral and water rights. In many states these can be sold apart from the surface. Ask whether they convey with the land.
  • Survey. A current boundary survey shows fences that are off the line and encroachments from neighbors.

Contamination and nearby sites

Old farm dumps, fuel tanks, chemical mixing areas and nearby industrial sites can leave contamination. Under the federal Superfund law, an owner can be held liable for cleanup even without causing the problem.

  • EPA records. Search EPA ECHO for regulated facilities and reported violations near the tract.
  • Walk the land. Look for drums, old tanks, stained soil, dead vegetation and buried trash near barns and old homesites.
  • Phase I assessment. EPA explains that a Phase I environmental site assessment done under its All Appropriate Inquiries rule can support protection from that liability. EPA recognizes ASTM E2247-23, a standard written for forestland and rural property. EPA also notes the inquiry must be done or updated within one year before you take ownership. Lenders often ask for one on larger or commercial deals.

Zoning, rules and money

  • Zoning and county rules. Call the county planning office. Ask what you can build, minimum lot sizes, and whether a manufactured home is allowed.
  • Taxes. Ask whether the land has an agricultural tax status and what happens if the use changes.
  • Farm programs. If the land is enrolled in a USDA program or has a lease, ask for the contract and how long it runs.
  • Financing. Land loans often work differently from home loans. Talk to a lender early, since many items on this list are things the lender will ask about too.

Put it in the contract

Write the checks you still need into the purchase contract as contingencies: survey, title, perc test, environmental review and financing. Give yourself enough days to finish them. If a check turns up a problem, a contingency lets you renegotiate or walk away.

A clean result means the issue was not found in the public maps and records checked. It does not prove the land has no problem. Keep notes of what you checked and when, so you can show your lender, your attorney and later buyers.

Sources: Federal Emergency Management Agency (Flood Map Service Center), U.S. Fish and Wildlife Service (National Wetlands Inventory), USDA Natural Resources Conservation Service (Web Soil Survey), U.S. Environmental Protection Agency (ECHO and All Appropriate Inquiries). This guide is general information, not legal or engineering advice. Confirm important findings with a qualified professional before you buy.

See what the public maps say about your land.

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