County Land Readiness Checklist: What to Research Before Buying

Every county in the United States has its own rules about what you can build, where you can build it, and what permits you’ll need. A parcel that’s perfect for a homestead in one county might be nearly impossible to develop in the county next door. I’ve seen buyers find the ideal property at a great price, only to discover the county requires a $50,000 engineered septic system or won’t allow the accessory dwelling they planned.

Before you make an offer on land in any county, you need to research that county’s specific regulations, costs, and infrastructure. This checklist walks you through every item to verify at the county level, with specific guidance on where to find the information and what to watch out for.

Why County-Level Research Matters More Than State-Level

Land use regulation in the US is primarily a local function. While states set some broad parameters, it’s counties (and sometimes townships or municipalities) that control:

• Zoning and land use designations
• Building permit requirements and fees
• Septic system regulations
• Road standards and access requirements
• Property tax rates and assessment methods
• Subdivision rules
• Environmental regulations beyond federal minimums

Two counties in the same state can have dramatically different rules. In my research, I’ve found counties in the same state where building permit fees range from $200 to $5,000+ for a similar structure, and where septic regulations range from straightforward conventional systems to requiring engineered designs that cost 3–5x more.

The Complete County Research Checklist

Section 1: Zoning and Land Use

Where to look: County planning department website, county zoning maps, county code/ordinances (often available online)

• What is the zoning designation of the parcel? Get the exact zone code (e.g., A-1 Agricultural, R-1 Residential, etc.)
• What uses are permitted by right in that zone? A permitted use means you can do it without special approval
• What uses require a conditional use permit (CUP)? If your intended use requires a CUP, understand that it’s not guaranteed and involves a public hearing process
• What’s the minimum lot size? Many rural zones require 2, 5, 10, or even 20+ acre minimums for building
• What are the setback requirements? Distance your structures must be from property lines, roads, and other features. Typical setbacks: 25–100 feet from front property line, 10–50 feet from side and rear
• Maximum building height? Usually 35 feet in residential zones, but varies
• Maximum lot coverage? Some zones limit the percentage of the lot that can be covered by structures and impervious surfaces
• Are accessory structures allowed? Barns, workshops, guest houses, ADUs — check the rules for each
• Are there any overlay zones? Scenic corridors, historic districts, airport zones, watershed protection areas can add restrictions
• Is the area subject to a comprehensive plan change? Check if rezoning is planned for the area

Pro tip: Don’t trust the listing agent’s description of zoning. Look it up yourself on the county’s zoning map or call the planning department directly. I’ve found listing descriptions that were flat-out wrong about what’s permitted.

Section 2: Building Permits and Codes

Where to look: County building department, county code enforcement office

• What building codes does the county follow? Most follow the International Building Code (IBC) or International Residential Code (IRC), but the adopted edition varies
• What are the building permit fees? Get exact numbers. Fees may be based on square footage, project value, or a flat rate
• What’s the permit review timeline? In some counties, reviews take 2 weeks. In others, 3+ months
• What inspections are required? Typical: foundation, framing, electrical, plumbing, mechanical, final
• Are there energy code requirements? Some counties require energy-efficient construction beyond the base code
• Does the county allow owner-builder construction? Some require licensed general contractors; others let you build your own home
• Are manufactured/modular homes allowed? If you’re considering this route, verify it’s permitted in your zone
• What about tiny homes? Many counties have minimum square footage requirements (often 600–1,000 sq ft) that effectively prohibit tiny houses
• Are there any design review requirements? Some areas require architectural review board approval

Cost impact: Building permit fees and associated costs vary from a few hundred dollars to $10,000+ depending on the county and project scope. Always get the fee schedule before budgeting your project.

Section 3: Septic and Wastewater

Where to look: County health department or environmental health department

This section is critical. If the property doesn’t have access to a municipal sewer system, you’ll need an onsite wastewater system (septic). County rules on septic systems vary dramatically.

• Does the county require a perc test before building? (Almost all do, but verify the process)
• Who can perform the perc test? Some counties require their own staff to conduct or witness the test; others accept tests from licensed professionals
• What septic system types are approved? Conventional gravity, pressure distribution, mound, aerobic treatment, sand filter — each county has its own list
• What’s the minimum lot size for a septic system? This can be larger than the zoning minimum lot size
• Are there required separation distances? From wells, property lines, waterways, structures — these can significantly limit where you can place the system and your well
• What’s the permit process and cost? Septic permits range from $200 to $2,000+
• Does the county require system maintenance inspections? Some counties require periodic inspections of certain system types
• What about replacement area requirements? Many counties require you to designate a reserve area for a future replacement drain field

Critical warning: Some counties have adopted very restrictive septic regulations that effectively require engineered alternative systems costing $20,000–$40,000+, even on sites where a $7,000 conventional system would work in the next county over. Check this early — it’s a budget buster.

Section 4: Water

Where to look: County health department, state water resources agency, local water utilities

• Is municipal water available? If so, what are the connection fees?
• If well water is needed, what are the county well regulations? Minimum depth, casing requirements, setback distances
• Does the county require a well permit? Most do. Cost is usually $50–$500
• What’s the typical well depth in the area? Ask the county or local well drillers. This directly affects your cost
• Are there known water quality issues? Arsenic, nitrates, fluoride, hard water — some areas have naturally occurring contaminants
• Water rights: In western states, do water rights convey with the land? Is there an existing water right? Contact the state water resources division
• Are there water use restrictions? Some counties or water districts limit outdoor watering, livestock watering, or irrigation

Section 5: Road Access and Transportation

Where to look: County road department, county GIS/mapping department

• Is the parcel on a county-maintained road? County-maintained roads are plowed, graded, and repaired by the county at no direct cost to you
• If the road is private, who maintains it? Is there a road maintenance agreement? Who pays?
• What are the county’s driveway permit requirements? Most counties require a permit for a new driveway access point. Some have specific engineering requirements
• Driveway standards: Does the county specify minimum driveway width, grade, surface material, or turnaround requirements? (Fire code often dictates these)
• Road frontage requirements: Does the county require minimum road frontage for a buildable lot?
• Are there any road improvement plans? A planned highway widening or new road could affect your property (positively or negatively)
• Snow removal: If in a snowy area, is the road plowed? How quickly?

Section 6: Property Taxes and Assessments

Where to look: County assessor’s office, county treasurer’s office

• Current property tax rate (mill rate or percentage)
• Current assessed value of the parcel (this is what taxes are based on)
• Assessment method: How does the county assess raw land vs. improved property? Will building on the land trigger a reassessment?
• Agricultural or timber exemptions: Does the county offer reduced tax rates for agricultural use, timber use, or conservation easements? What are the qualifications?
• Special assessments: Are there any special assessment districts (road improvement, fire, hospital, school bonds) that add to the tax bill?
• Tax payment schedule: Annual, semi-annual, or quarterly?
• Are there any delinquent taxes on the parcel? Check with the treasurer
• Tax history: How much have taxes increased over the past 5–10 years? This gives you a trend to project future costs

Property tax example: A 10-acre raw land parcel assessed at $50,000 in a county with a 1.2% effective tax rate costs $600/year in taxes. Build a $300,000 house and the assessed value might jump to $350,000, making your annual tax bill $4,200. Know this before you budget.

Section 7: Utilities Beyond Water

Where to look: Contact utility providers directly, county planning department

• Electric utility: Which company serves the area? Cost to extend service to the parcel?
• Natural gas: Available in the area? If not, confirm propane delivery is accessible
• Internet: What providers serve the address? What speeds? (Use BroadbandMap.gov as a starting point, but call providers to verify)
• Cell phone coverage: Check your carrier’s coverage map for the specific location. Visit the site and test with your phone
• Trash/recycling: Is county collection available? Or do you need a private hauler?

Section 8: Environmental and Natural Hazards

Where to look: FEMA, county emergency management, state environmental agencies

• Flood zone status: Check FEMA flood maps. If in a flood zone, building costs and insurance will increase substantially
• Wildfire risk: Check state or county fire risk maps. Some counties restrict building in high-risk areas or require fire-resistant construction
• Earthquake zone: Seismic design requirements add to construction costs
• Soil stability: Check for landslide risk areas, expansive soils, or karst (sinkhole-prone) terrain
• Wetlands: Check the National Wetlands Inventory. Wetlands on your property may be federally protected
• Erosion and stormwater: Does the county require a stormwater management plan for new construction? Grading permits?
• Environmental contamination: Any history of mining, industrial use, or agricultural chemical storage nearby?

Section 9: Emergency Services

Where to look: County emergency management, local fire department

• Fire district: Which fire department serves the area? How far is the nearest station?
• Fire protection rating: This affects your homeowner’s insurance rates. Properties far from fire stations get worse ratings and higher premiums
• Ambulance/EMS: How far is the nearest hospital? What’s the typical response time?
• Law enforcement: County sheriff coverage? How far to the nearest substation?
• 911 addressing: Does the parcel have an assigned 911 address? If not, you’ll need one before building

How to Conduct Your County Research: Step by Step

Here’s the process I recommend:

Step 1: Start Online (1–2 hours)

Most counties have websites with zoning maps, code databases, and department contact information. Start by finding:

• The county’s GIS/parcel viewer (shows zoning, flood zones, and property boundaries)
• The county code or ordinance database
• The building department, planning department, and health department pages

Step 2: Make Phone Calls (2–4 hours)

Call the county planning department, building department, health department, and assessor’s office. Have your parcel number ready. Ask specific questions from the checklist above. Take notes and get names of the people you speak with.

Step 3: Visit the County Offices (Half day)

If you’re serious about a specific parcel, visit the county offices in person. Bring a site map. Ask to see the zoning code sections that apply. Request the building permit fee schedule in writing. Ask about any planned changes to regulations or infrastructure in the area.

Step 4: Talk to Locals

Neighbors, local builders, and real estate agents who work the area can tell you things the county offices won’t — like which inspector is strict, which areas have well water problems, or where the county is planning a new development.

County Comparison Worksheet

When comparing parcels in different counties, use this simplified comparison framework:

This side-by-side comparison often reveals that the cheapest parcel isn’t the cheapest once county-level costs are factored in.

Frequently Asked Questions

How do I find out the zoning of a specific parcel?

Most counties have online GIS (Geographic Information System) maps that show zoning by parcel. Search for “[County Name] GIS map” or “[County Name] parcel viewer.” You can also call the county planning department with the parcel number or address and they’ll tell you the zoning designation.

Can I change the zoning on land I buy?

It’s possible but not guaranteed. Rezoning requires a formal application to the county, a public hearing, and approval by the planning commission and/or county commissioners. The process takes 3–12 months and costs $500–$5,000+ in application fees. Success depends on whether your proposed use aligns with the county’s comprehensive plan and whether neighbors object.

What if the county doesn’t have zoning?

Some rural counties, particularly in Texas and a few other states, don’t have formal zoning ordinances. This gives you more freedom but also less predictability — your neighbor could potentially build something undesirable next to your property. Even without zoning, there are usually still building codes, septic regulations, and flood plain rules.

How much do building permits cost?

It varies enormously. I’ve seen counties where a permit for a single-family home costs $300, and others where the total permitting cost (including impact fees, utility connection fees, and plan review) exceeds $15,000. Always get the full fee schedule from the building department — not just the base permit fee.

Should I hire someone to do county research for me?

If you’re not local, consider hiring a local real estate attorney or a land consultant to do this research. Many real estate attorneys will do a due diligence review for $500–$1,500. A local real estate agent who specializes in land can also help — and their services are typically free to buyers. The cost is worth it to avoid buying a problem property.

Key Takeaways

• County regulations affect your land development costs more than most buyers realize — the difference between a permissive county and a strict one can be $20,000–$50,000+ in development costs
• Always verify zoning, septic requirements, and permit costs at the county level before making an offer
• Don’t rely on listing agent descriptions of what’s permitted — look it up yourself or call the county directly
• Use the comparison worksheet when evaluating parcels in different counties
• County offices are generally helpful and will answer questions — you just need to know what to ask
• When in doubt, hire a local real estate attorney to conduct due diligence for you