Answers to Foundation Questions in Clarksville, TN
Homeowners in Clarksville, TN, and across Montgomery County tend to ask us the same things about cracks, soil, costs, permits and insurance. The short answers are below. For questions about your own house, the local foundation specialist who visits is the right person to ask.
Foundation Facts and Answers
These answers are general information. They are not legal advice or a diagnosis of any home.
How do I know if a crack is serious?
Look at its width, its shape and whether it changes. A thin, straight hairline in drywall or concrete is often cosmetic. Stair-step cracks in brick, cracks wider than about 1/4 inch and cracks that grow over a few months lean more toward movement. Draw a short line at each end, note the date and look again in a few weeks.
Why do foundations move in the Clarksville area?
Two things stand out. Montgomery County sits on limestone where sinkholes are common, because water slowly works its way through the rock. Above it, soils like Baxter and Crider have clay subsoils that hold water, then dry and shrink. A dry year like 2026 followed by heavy rain can shift the ground under a footing. Leaks and poor drainage add to it.
What should I do about a sinkhole in my yard?
Leave it alone at first. Montgomery County asks owners to talk with a civil engineer or geotechnical professional before filling a sinkhole, and changes that send more runoff into one can need a state permit. Sinkhole work is its own field. Mention the sinkhole in your request, and ask the specialist which part, if any, falls within the foundation work.
What does foundation repair cost around here?
This Old House puts typical foundation repair at about $2,224 to $8,134 nationally, with an average near $5,179 (2026). Its Clarksville page lists an average of about $2,730, with complex jobs at $6,800 or more (2024). Piers run about $1,000 to $3,000 each nationally. These are published ranges, not our prices. The cost guide explains what moves the total.
Who comes to the house and prices the job?
That is a local foundation specialist based in the area. We take the request and arrange the visit. Everything at the house belongs to the specialist: the walk-around, the floor readings, any trip into the crawl space and the written estimate. Ask the specialist about methods, timing and warranty terms, since that is the person answering for the work.
How can I check a contractor's license in Tennessee?
On jobs of $25,000 or more, Tennessee requires a state contractor's license, and one of the state's classifications covers foundations. Ask for the license number and its classification, then search for it on the state's license verification site. Inside city limits, ask about City of Clarksville contractor registration too. Our Tennessee foundation repair rules page goes further.
Do I need a permit for foundation repair?
We could not confirm whether foundation repair needs a permit here. Structural repair work usually does, so ask the specialist who will pull it. Then confirm with the right office: the City of Clarksville Building & Codes Department inside city limits, or Montgomery County Building and Codes outside them. Downtown, exterior changes in the H-1 historic district may need design review, so check with the Regional Planning Commission.
Should an engineer look at the house?
It often helps, especially for bigger repairs or before a sale. No City or County page we read requires an engineer's letter for ordinary foundation repair, so ask. Ask the specialist if a professional engineer will review the house or seal the plan. This Old House puts a structural engineer's report at about $500 to $1,000 (2026).
Will homeowners insurance cover it?
That depends on your policy. Many homeowner policies exclude settling or earth movement, so ask your own insurer what yours covers. We stay out of claims entirely, and no one on our pages will offer to pay, waive or rebate a deductible. Keep any letters from your insurer together with your repair papers.
Can I cancel a contract I signed at home?
Often, yes. Tennessee's Home Solicitations Act usually gives a buyer who signs at home until midnight of the third business day to cancel, and the seller then has 10 days to return the money. Some sales are excluded, so look for the cancel notice in your paperwork. This is general information, not legal advice.
Ask a Foundation Pro Directly
Have a question about your own house? Send a request. Once we set up the visit, the local foundation specialist can answer it on site, with the house right there to look at.