Termite Damage Repair Cost

Most homeowners spend somewhere between a few hundred dollars and a few thousand dollars repairing termite damage after treatment, but structural repairs to joists, sill plates or load-bearing walls can run well into five figures when damage has spread for years. The final bill depends far less on termites themselves than on what they ate: cosmetic trim and drywall are cheap, while anything holding up the house needs a contractor, sometimes an engineer, and often a permit. This guide breaks down typical repair ranges by component, the factors that move the price and how to avoid paying twice.

Part of our Pest Control guide →

In this guide

1. Typical Termite Damage Repair Costs
2. What Drives the Cost Up or Down
3. Repair Cost by Area of the House
4. The Right Order: Inspect, Treat, Then Repair
5. Does Insurance Cover Termite Damage?
6. How to Keep Repair Costs Down
7. Termite Damage vs Wood Rot
8. How to Get an Accurate Repair Quote
9. DIY or Hire a Pro?
10. Frequently Asked Questions

Typical Termite Damage Repair Costs

The ranges below are typical US ranges for labor and materials on a single-family home. They vary with your region, the extent of damage, access and local labor rates. Use them for budgeting, then get itemized quotes.

Repair	Typical range	Notes
Baseboards and trim	$200 – $1,000	Per room or run; paint matching adds cost
Drywall patch and finish	$250 – $1,500	Depends on number of patches and texture
Door or window frame	$300 – $1,500 per opening	More if the door or window must be replaced
Hardwood or plank flooring section	$500 – $3,000	Matching older flooring is the main variable
Subfloor section	$500 – $3,000	Includes removing and reinstalling flooring
Sister one floor joist	$300 – $1,200 per joist	Crawl space access affects labor
Replace floor joists	$1,000 – $5,000+ for several joists	May need temporary shoring and a permit
Sill plate replacement	$2,000 – $10,000+	Requires jacking the house in sections
Wall studs (non-bearing)	$500 – $2,500	Includes drywall removal and replacement
Load-bearing wall or header	$3,000 – $10,000+	Engineer review often needed
Deck boards and framing	$1,000 – $10,000+	Partial repair vs full rebuild
Roof rafters or trusses	$2,000 – $15,000+	Less common; usually drywood termites

A structural engineer’s inspection, if needed, is typically several hundred dollars, and building permits commonly add a few hundred more depending on your municipality. Those two line items are easy to forget but they protect you when you sell the house.

What Drives the Cost Up or Down

How long the termites were active

Subterranean termites can work inside wood for years before you see swarmers or mud tubes. Damage found during a routine inspection is usually localized; damage discovered because a floor sags or a door frame crumbles is usually extensive. Catching early signs of termites is the single biggest way to keep repair bills small.

Structural vs cosmetic damage

Termites eat the soft spring wood and leave the harder grain and paint film, so a board can look intact while being mostly hollow. Cosmetic damage to trim and drywall paper is a handyman job. Damage to joists, beams, sill plates, studs in bearing walls, or headers over doors and windows is structural, and that means a licensed general contractor, often an engineer’s assessment, and permits in most jurisdictions.

Access

A roomy crawl space or unfinished basement makes joist and sill work far cheaper than the same repair under a slab or behind finished walls. If crews need to remove finished flooring, cabinets or tile to reach the damage, the repair cost can double once you add removal and reinstallation.

Repair method

• Sistering: bolting or gluing a new full-length or partial joist alongside a weakened one. Fast, minimally invasive and usually the cheapest structural fix when the original joist still has some strength.
• Partial replacement: cutting out a damaged section and splicing in new lumber with blocking and fasteners.
• Full replacement: needed when wood is hollowed through, or for sill plates and beams. Requires temporary supports and sometimes jacking.
• Wood hardeners and fillers: fine for small cosmetic spots in trim, never for structural members.

Materials and finish matching

Framing lumber is relatively inexpensive. What adds up is matching what you can see: old-growth hardwood floors, custom trim profiles, plaster walls and historic windows. Expect older homes to cost more to repair because finish carpentry takes longer. Many contractors recommend treated lumber or borate-treated replacements in contact-prone areas; see our guide to borate wood treatment for how that works.

Region and labor rates

Labor typically makes up the larger share of termite repairs. Expect higher rates in major metro areas and in high-termite regions where contractors are busy, such as the Gulf Coast, Florida, Southern California and Hawaii.

Repair Cost by Area of the House

Floors and joists

Signs include soft spots, bouncy or sagging floors, and buckled hardwood. In a crawl space, a contractor probes each joist with an awl. If the bottom edge is sound, sistering is common. If several joists in a row are hollow, or the damage reaches where joists rest on the sill, expect temporary shoring and replacement. Floor finishes are often the bigger cost: patching a section of solid hardwood and refinishing to blend can cost as much as the framing.

Sill plates and rim joists

The sill plate is the wood that sits directly on the foundation, making it the first thing subterranean termites reach. Replacing it means jacking the house a fraction of an inch in short sections, cutting out old sill, installing pressure-treated replacement and anchoring it to the foundation. It is one of the more expensive termite repairs, and the price climbs quickly with the length that needs replacing.

Walls

Bubbling paint, drywall that sounds hollow, pinholes and mud lines are typical signs. Non-bearing studs can be replaced or sistered relatively cheaply; most of the cost is opening and re-finishing drywall. Bearing walls and headers need temporary support during the repair, and many jurisdictions require an engineer’s sign-off.

Decks, porches and exterior trim

Termites often hit wood touching soil: deck posts, porch steps, fence posts and siding near grade. Swapping a few boards is inexpensive. Rotten and termite-damaged posts and beams, however, often mean rebuilding the substructure, at which point a deck replacement may make more sense than piecemeal repair.

The Right Order: Inspect, Treat, Then Repair

1. Get a full inspection. A licensed termite inspector identifies the species, active areas and visible damage. Subterranean and drywood termites need different treatments; see subterranean vs drywood termites.
2. Treat the infestation. Liquid soil barriers, baits or fumigation depending on species. Our termite treatment cost guide covers what that step usually costs.
3. Confirm elimination. Ask the pest company to confirm no ongoing activity, especially before closing up walls.
4. Assess damage. Have a contractor (and engineer for structural members) scope the repair once wood is exposed.
5. Repair. Use treated or borate-protected lumber where wood is close to soil or moisture.
6. Protect. Keep a renewable termite warranty or bond and schedule annual inspections.

Skipping the treatment step, or repairing before activity is confirmed gone, is the most expensive mistake homeowners make: termites simply move into the new wood.

Does Insurance Cover Termite Damage?

Usually not. Standard homeowner’s policies treat termite damage as preventable maintenance rather than sudden accidental loss. There are narrow exceptions, such as when termite damage causes a sudden collapse, but do not count on it. Read your policy and ask your agent.

A better protection is a termite bond or service agreement with a pest company. Some are re-treatment only; others include repair coverage up to a stated limit. If you are buying a house with a history of termites, ask the seller whether an existing bond is transferable and what it covers. When choosing a provider, our guide on how to choose a termite company lists the questions to ask.

How to Keep Repair Costs Down

• Get at least three itemized repair quotes and compare scope, not just the total.
• Ask whether sistering is acceptable instead of full joist replacement.
• Do cosmetic finish work (painting, simple trim) yourself once structural repairs are done.
• Bundle repairs into one project rather than calling contractors piecemeal.
• Fix moisture problems at the same time: leaky gutters, poor grading and damp crawl spaces attract termites and rot.
• Keep wood mulch, firewood and soil a few inches away from siding and sills. Our termite prevention guide covers the full list.

Termite Damage vs Wood Rot

Contractors often find termite damage and moisture rot in the same spot, because damp wood attracts subterranean termites. The distinction matters for the repair plan. Termite-damaged wood typically has tunnels or galleries running with the grain, often packed with soil-like material, while the surface layer stays intact. Rot makes wood soft, crumbly or stringy, and dry rot breaks it into cube-shaped cracks. If rot is part of the problem, the quote should include fixing the moisture source, such as a leaking pipe, failed flashing or poor crawl space ventilation, or the new lumber will fail again within a few years.

How to Get an Accurate Repair Quote

Termite repairs are notorious for change orders, because nobody can see inside a wall until it is opened. You can reduce surprises with a few steps:

• Share the pest inspection report, including the diagram of damaged areas, with each contractor.
• Ask for a quote broken out by component: framing, subfloor, finishes, permits and disposal.
• Ask how they will price additional damage found after opening up, for example a per-joist or per-linear-foot rate.
• Confirm whether the contractor or you are responsible for pulling permits and scheduling inspections.
• Get the replacement lumber type in writing, especially for sills and anything near grade.

DIY or Hire a Pro?

Replacing a section of baseboard, a deck board or a non-structural piece of trim is a reasonable DIY job. Anything structural is not. Jacking a floor, replacing a sill plate or reframing a bearing wall without the right supports can cause sagging, cracking and safety hazards, and unpermitted structural work can create problems when you sell. For the bigger picture on keeping pests out of your home and yard, see our pest control guide.