
Boston's humid summers bring real termite damage repair pressure to the region's oldest homes. Victorian brownstones in Back Bay, colonial wood-frame houses in the North End, and triple-deckers across Dorchester and Jamaica Plain all carry original framing and sills that termites target when they swarm in warm weather. After the exterminator leaves, the damaged wood stays. We replace termite-eaten studs, sills, trim and subfloor sections across Boston homes, working from your pest inspection report and restoring full structural integrity. The work is straightforward carpentry: we cut out the damage, sister new framing where load-bearing wood is weakened, and finish the repair so the house is solid again.
Why Termite Damage Repair Matters in Boston's Historic Housing Stock
Termites don't infest wood in Boston the way they do in the Deep South, but the region's humidity, freeze-thaw cycles, and the sheer age of the housing stock create ideal conditions for them to establish colonies in summer and fall. The damage they leave behind is structural: hollowed studs, weakened floor joists, compromised sill plates that lose their ability to carry load or resist weather. A pest inspection report tells you where they've been. The wood repair tells you whether the house can stand again at full strength.
- Termite tunnels reduce the cross-section of a stud or joist, cutting its load-carrying capacity and stiffness.
- Sill plates and rim joists weakened by termites allow the structure to settle unevenly and let moisture penetrate deeper into the house.
- Subfloor sections eaten from below create soft spots underfoot and can allow further pest entry if left unaddressed.
- We replace the damaged sections with pressure-treated lumber or solid wood matched to the original, restoring the original framing geometry and load path.
Addressing termite damage promptly prevents secondary damage from moisture infiltration and keeps settlement and floor movement from compounding.
Key info: A homeowner in Somerville with termite damage in the rim joist and band board of a 1920s triple-decker caught the infestation early. We replaced a 12-foot section of rim joist and the damaged band board, sistered the existing rim to a new pressure-treated beam, and sealed the rim cavity. The repair cost $2,400 and took four days. Waiting another season would have meant replacing the entire rim and risking foundation settlement.
For more on structural wood damage repair, see our wood rot and dry rot repair page. The pathology is different, but the repair method overlaps significantly.
How We Repair Termite Damage: Boston Carpentry's Step-by-Step Process
We start with your pest inspection report and a site assessment. We locate the full extent of the damage, probe the wood with a screwdriver to measure depth of attack, and determine whether repair or replacement is the right call. Most termite damage in Boston is shallow enough that targeted replacement of the damaged section restores full strength. We work in phases: remove the damaged wood, install new framing, sister or tie the new wood to the existing structure, and finish the repair so it's invisible to the eye.
- We identify the full extent of termite galleries by probing and visual inspection, marking the boundary between sound and damaged wood.
- We cut out the damaged section cleanly, using a reciprocating saw or handsaw depending on the location and the need to preserve surrounding finish.
- We install new framing cut to the exact dimensions of the removed section, using pressure-treated lumber for sills and rim joists or solid wood for studs and trim.
- We sister the new wood to the existing framing using bolts, lag screws, or nails, depending on the load path and the location in the house.
- We finish the repair with caulk, paint, or stain so the new wood matches the existing and the repair is complete.
The goal is to restore the original load path and weather resistance without removing more wood than necessary.
Example: A Brookline homeowner found termite damage in the sill plate and first-floor subfloor of a 1890s colonial. We removed the damaged sill section (8 feet long), installed a new pressure-treated sill bolted to the foundation every 2 feet, replaced the damaged subfloor boards above it with new 3/4-inch solid wood, and sealed the sill cavity with foam and caulk. Total repair time: three days. Cost: $3,100. The house settled back to level and the floor stopped squeaking.
For more on subfloor and floor joist repair, see our floor joist and subfloor repair service page.
| Repair Approach | Description | Best For |
|---|---|---|
| Section Replacement | Remove the damaged section of stud, joist, or sill, install new wood cut to length, tie it to the existing framing with bolts or lag screws. | Termite damage confined to one or two framing members, shallow attack, sound wood on either side. |
| Sistering | Install a new joist or stud alongside the damaged one, bolted or lag-screwed every 12 to 16 inches, sharing the load. | Load-bearing joists or studs weakened but not severed, where a full replacement would disturb the floor above or the finish. |
| Sill and Rim Replacement | Remove the damaged sill plate and rim joist, install new pressure-treated lumber bolted to the foundation, install new subfloor above. | Termite damage in the sill or rim joist of a wood-frame house, often combined with shallow subfloor attack. |
| Subfloor Patching | Remove damaged subfloor boards, install new 3/4-inch solid wood or plywood, nail or screw to the joists below. | Surface-level termite damage in the subfloor, joists sound, no structural weakness in the floor frame. |
| Trim and Casing Replacement | Remove damaged door casings, window trim, baseboard, or exterior trim, install new wood cut and finished to match the original profile. | Termite damage in non-structural trim, finish carpentry repair, no load-bearing function. |
Termite Damage Repair Cost in Boston: What to Expect
Termite damage repair in Boston typically starts at $1,200 for small, localized repairs like a damaged door casing or a short section of subfloor. Most jobs involving a sill plate, rim joist, or multiple studs run $2,400 to $4,800, depending on the extent of the damage, the wood species, and the accessibility of the repair. A full rim joist replacement or extensive subfloor work can exceed $6,000. The main factors that move the price are the linear feet of framing to replace, whether the repair is load-bearing or non-structural, and whether the house is occupied during the work.
We recommend getting two or three estimates before committing. Each carpenter will assess the damage differently, and the estimates will reflect their method and timeline. Our estimate is free and comes with a detailed scope of work and a materials list so you can compare apples to apples.
See our full pricing page for more detail on our rate structure and what's included in a typical repair estimate.
Termite Damage Repair Near Me: What to Look for When Hiring a Carpentry Contractor in Boston
Termite damage repair is skilled work. You want a carpenter who understands load paths, can read a pest inspection report, and knows when to repair and when to replace. Here's what to ask and verify before you hire.
- Verify that the contractor is fully insured with general liability and workers compensation, and ask for a certificate of insurance before work starts.
- Ask for references from three recent termite damage or wood rot repair jobs in Boston or nearby, and contact at least one homeowner to confirm the quality of the repair.
- Get a detailed written estimate that names the damaged members, specifies the wood type for the repair, and breaks out labor and materials separately.
- Ask whether the repair requires a building permit. Many termite damage repairs do not, but structural repairs like sistering or replacing a rim joist may. Your local building department can tell you the threshold.
- Confirm that the contractor will work from your pest inspection report and will not perform any pest treatment, fumigation, or chemical work. That's a separate licensed trade.
A good carpenter will explain the damage, show you the repair method, and leave you with a solid, warrantied repair. We're ready to help. Call us at (857) 353-6607 for a free estimate, or fill out our contact form and we'll reach out within 24 hours.
Termite Damage Repair in Boston: Pricing Guide
| Service | Price | Details |
|---|---|---|
| Small trim or casing repair | Starting at $1,200 | Door casing, window trim, or baseboard section replacement, non-structural, one to two hours labor |
| Subfloor section replacement | Starting at $1,800 | Up to 8 square feet of subfloor patching, joists sound, includes removal, new wood, fastening, and finish |
| Sill plate or rim joist repair | Starting at $2,400 | Up to 12 linear feet of sill or rim replacement, pressure-treated lumber, bolting to foundation, new subfloor above, one to three days |
| Multiple studs or joists, sistering or replacement | Starting at $3,600 | Two to four load-bearing members, sistering with bolts or lag screws, or section replacement, structural integrity restored |
| Extensive or complex termite damage | On estimate | Full rim replacement, multiple stories, occupied house, or damage affecting foundation connection requires site assessment and detailed scope |
| Travel and estimate | Free | No charge for the estimate or travel within Boston and surrounding service areas, response within 24 hours |
Indicative pricing, the exact cost depends on square footage, finish, and site access. Free personalized estimate within 24h at (857) 353-6607.