Buying Land to Build on in Tulare County: A Due-Diligence Checklist

The most expensive mistakes I've seen in 25+ years of building in the Central Valley didn't happen during construction. They happened at the closing table — when someone bought a beautiful piece of land without checking whether you could actually build a home on it. A lot that looks perfect from the road can turn out to have no legal access, soil that won't pass a septic test, or a well that costs $40,000 to drill. By then the money's spent.

Buying raw land is not like buying a house. There's no home inspection to lean on and no seller's disclosure that tells you the ground percolates. The burden is entirely on you to prove the parcel is buildable before you commit. This checklist walks through exactly what to verify when you're shopping for a lot to build on in Tulare County — zoning, water, septic, access, utilities, and soil — plus the contingencies that let you walk away if the numbers don't work.

First rule: make your offer contingent on due diligence

Before we get into what to check, understand the single most important protection you have: the feasibility (due-diligence) contingency. This is a clause in your purchase offer that gives you a defined window — often 30 to 60 days — to investigate the property and cancel for a refund of your deposit if it doesn't check out.

Every item below should be verified inside that window. If a seller won't accept a reasonable feasibility contingency on raw land, that's a warning sign in itself. On a more complex parcel, budget roughly $1,500 to $5,000 for the investigations — perc test, boundary survey, title search, and possibly an environmental assessment. That's real money, but it's a fraction of what a bad lot costs after you've closed.

1. Zoning — can you even put a house here?

Start with the parcel's zoning designation, because it controls everything else. In unincorporated Tulare County, land use is set by the parcel's zoning code, and you can look it up yourself using the county's Public Parcel Search by Assessor's Parcel Number (APN). That search shows the lot size, the zoning designation, and the last appraised value.

What you're confirming:

• Residential use is allowed. Some parcels are zoned exclusively agricultural, and a single-family home may be a secondary or conditional use rather than a right. Don't assume "rural" means "you can build a house."
• The lot meets the minimum size for a home with your intended water and sewer setup (more on that below).
• Setbacks and building envelope. Even a large parcel may have a small buildable area once you account for front, side, and rear setbacks, easements, and any floodway or habitat overlays.

When in doubt, call the Tulare County Resource Management Agency (RMA) planning line at (559) 624-7000 and ask them directly what can be built on the specific APN. A five-minute phone call can save you from a very expensive assumption.

2. Water & sewer determine the minimum lot size

Here's a Tulare County detail that surprises a lot of buyers: the minimum lot size you're allowed to build on depends on how the property gets water and handles sewage. For residential uses the county sets it roughly like this:

These are general county thresholds — always confirm the exact requirement for your parcel and community plan with the RMA, since specific zones and overlays can differ. The practical takeaway: a parcel that relies on a private well and septic generally needs at least a full acre. If you're looking at a smaller rural lot, the water/sewer situation has to line up before the size makes sense.

3. The well question — and why SGMA matters in Tulare County

If the parcel isn't on a public water system, you'll need a private domestic well, and this is one of the biggest budget wildcards in the whole purchase. Before you buy:

• Look at nearby well logs. The State's well-log records and neighbors' experience tell you the typical depth and flow rate in that area. A well that has to go very deep, produces a low yield, or needs expensive treatment can add tens of thousands of dollars to your project.
• Confirm the parcel qualifies for a new well permit. Well construction requires a permit through the county, and the water has to be potable and adequate.
• Understand the SGMA context. Tulare County sits over the Tulare Lake Basin, which is broken into groundwater subbasins (including the Kaweah, Kings, and Tule subbasins) governed by California's Sustainable Groundwater Management Act (SGMA). The basin is in overdraft, pumping is being actively managed, and 2026 has brought new state action on Tulare-area groundwater. A single domestic household well is a very small user — far below the thresholds aimed at large agricultural pumpers — but the direction of travel matters. Groundwater is a managed, watched resource here, and you want a clear read on well feasibility for your specific parcel before you rely on it.

The bottom line on water: never assume you can drill an affordable, productive well just because the neighbors have one. Get a driller's read on the area during your contingency period.

4. Septic — does the soil actually percolate?

No public sewer means a septic system, and a septic system only works if the soil drains at the right rate. The test for this is the percolation ("perc") test: holes are dug on the property and a professional measures how fast water drains through the soil. In Tulare County, on-site wastewater treatment systems (septic) are permitted and overseen through the county's Environmental Health division — reachable at (559) 624-7400 — and most installation or repair work requires a permit.

A perc test typically runs somewhere in the $300 to $3,000 range depending on how many holes and whether they're hand- or machine-dug, with many buyers landing around $750 to $1,900. Some soils (heavy clay, high water table, hardpan) fail or require an expensive engineered/alternative septic system. That's exactly the kind of thing you want to discover on someone else's dime, before closing.

The rule I give every client: if the land has no valid perc test, make your purchase contingent on a passing result. A failed perc test can make a lot effectively unbuildable, or add $20,000+ for an alternative system — a deal-changer you never want to learn about after the money's gone.

5. Legal access — a visible road isn't enough

This one catches people off guard: a dirt path or a driveway you can drive on today does not guarantee you have the legal right to use it. You need recorded, enforceable access from a public road to the parcel — ideally direct frontage on a public road, or a properly recorded access easement if the land is landlocked or reached across a neighbor's property.

Verify:

• Does the parcel have frontage on a public, county-maintained road? If yes, access is usually straightforward.
• If not, is there a recorded easement that legally guarantees access — and does it also allow utilities to be run in? A road easement doesn't automatically include the right to trench power and water.
• Year-round usability. A crossing that floods or becomes impassable part of the year isn't real access for a home you'll live in and a build you have to deliver materials to.

Your title company and a review of the preliminary title report are essential here. Don't take the seller's word that "everyone's always used that road."

6. Utilities — get written estimates, not assumptions

Beyond water and sewer, confirm the cost and feasibility of getting the rest of the services to the buildable spot:

• Electricity. How far is the nearest power line, and what will it cost to extend service to your home site? Long runs across a large parcel can be surprisingly expensive.
• Natural gas or propane. Many rural Tulare County homes run on propane; confirm what's available.
• Internet/broadband. Increasingly non-negotiable — check what's actually serviceable at that address.

The move here is simple: during your contingency window, get written estimates from the utility providers and, where relevant, from a well driller and septic installer. Verbal "it should be fine" answers have blown up more than one budget.

7. Title, easements, liens & the boundary

Order a preliminary title report and read it carefully with your title officer. You're looking for anything that limits what you can do with the land:

• Easements running through the parcel (utility, drainage, access for a neighbor) that could sit right where you wanted to build.
• Liens, back taxes, or unpaid assessments attached to the property.
• Deed restrictions or CC&Rs that dictate home size, style, or use.
• Mineral or water rights that were severed from the surface at some point in the past.

On acreage where the corners aren't obvious, a boundary survey (roughly $500 to $3,000+) confirms you're buying what you think you're buying and shows the true buildable envelope after setbacks and easements.

8. The land, the site & the hidden site-work costs

Finally, look hard at the physical ground itself, because raw land almost always costs more to make build-ready than buyers expect:

• Flood zone. Check the FEMA flood map. Parts of the valley floor sit in flood-prone areas, which affects insurance, required elevation, and cost.
• Grading and drainage. How much dirt has to move to create a level, well-drained pad?
• Soil and geotechnical conditions. Expansive clay or poor bearing soil can drive up foundation costs.
• Distance from the road to the home site, which sets driveway, utility-run, and access costs.

Once you own the lot, all of this becomes site work — the clearing, grading, driveway, well, septic, and utility connections that happen before the house itself starts. We cover that phase in depth in our guide to building on your own land in Tulare County. The point during due diligence is simply to estimate it, so it goes into your budget with eyes open.

The bottom line

A buildable lot in Tulare County is a great foundation for a custom home — but "buildable" is something you prove, not something you assume. Run the checklist: confirm zoning and lot-size rules, pin down water (well feasibility and the SGMA picture) and septic (a passing perc test), verify recorded legal access, get written utility estimates, read the title report, and budget the site work honestly. Protect all of it with a feasibility contingency so you can walk away if a deal-killer shows up.

The best time to bring in a builder isn't after you close — it's while you're still deciding. If you're looking at a parcel in Visalia, Tulare, Hanford, or anywhere in Tulare County and want a straight answer on whether it's realistically buildable and what the site work will cost, that's exactly what an early consultation is for. Better to spend an hour on the phone than to inherit a lot you can't build on. It also pairs naturally with lining up your construction financing and setting a realistic build budget before you commit.