You drive onto a wooded lot, step out of your car, and feel it: that spark. This is the place. The sunlight filtering through the trees. The privacy. The possibilities.
But here's what I've learned from designing custom homes: that feeling can be expensive. I've watched clients fall in love with properties that cost them $50,000 more to build on than they should have — or that outright couldn't be built on at all.
Before you sign a purchase agreement, ask these five questions. They're the ones I wish every buyer knew to ask.
1. What's the zoning — and can you actually build what you want?
This is the most common surprise I see. A lot looks perfect in a residential neighborhood, but the zoning might limit you to a single-story home, require a 25-foot setback from the street, or prohibit guest houses and accessory dwelling units.
What to do: Call the local planning or building department. Ask for the zoning designation and a list of development standards. Better yet, ask a simple question: "If I wanted to build a 2,500 sq ft home with a detached garage on this lot, would that be permitted?"
If they hesitate or say "you'd have to check with planning," that's your signal to dig deeper before you spend money.
2. Where are the setbacks — and how much buildable area is left?
Even if zoning allows your dream home, setback requirements can shrink your buildable area significantly. Many lots in older neighborhoods have 25-foot front setbacks, 10-foot side setbacks, and 20-foot rear setbacks.
A 50' x 100' lot might only give you 25' x 70' to work with — and that's before accounting for easements, wetlands, or slopes.
What to do: Request a survey or plot plan that shows setback lines. If you don't have one, ask the seller. A credible lot should come with this documentation. If they can't provide it, that's a red flag.
3. What's the soil — and has anyone tested it?
Georgia clay is notorious. In the Atlanta area alone, I've seen foundations crack, driveways heave, and retaining walls buckle because of expansive clay soil that wasn't accounted for.
If you're planning a traditional foundation, soil composition matters. Some lots require deep pilings or special foundations that can add $15,000–$30,000 to your build cost.
What to do: Ask if a geotechnical report exists. If not, budgeting $1,000–$2,000 for a soil test before you close is one of the smartest decisions you can make. It could save you five times that in surprises later.
4. What utilities are available — and at what cost?
There's a world of difference between a lot with city water/sewer at the street and one that needs a well, septic system, or a 500-foot driveway with underground utilities run to it.
I had a client who loved a 3-acre wooded lot in Cumming. It felt remote and private — exactly what they wanted. What they didn't realize: bringing power to the building site required a $22,000 pole installation. The well driller quoted another $18,000.
What to do: Ask the utility companies — electric, water, gas, internet — for estimates to bring service to your lot. Also check if there's an existing septic system or if you'll need to install one (which requires a percolation test and permits).
5. What's the slope — and how will it affect your design?
A gentle slope can be beautiful. A steep slope can be a drainage nightmare, require extensive grading, or force you into a basement foundation you didn't want.
Walk the lot after a heavy rain. If water pools in certain areas, that's where you'll deal with drainage issues. A 10-15% grade might require a daylight basement design. Anything steeper often drives up foundation costs substantially.
What to do: Use a surveyor's topo map or simply walk the lot with an eye for how water flows. If you're not sure, a site visit with a builder or architect ($200–$500) can save you from a very expensive surprise.
Don't risk it
These five questions can save you tens of thousands of dollars — or prevent you from buying a lot that can't work for your goals at all.
But there are more. A lot more.
We've put together a complete 13-point checklist that covers everything from zoning to utilities to soil. It's free — no catch.
Get the Free Checklist →The bottom line
Land is emotional. That's by design — it's the first step toward the home you've imagined. But the cheapest land is rarely the best value, and the most beautiful lot isn't always the most buildable.
Ask the hard questions early. Get the right inspections. Walk away if something doesn't feel right.
Your future home is worth the extra due diligence.