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Carpentry in Cambridge, MA (2138) · Local Professionals

Boston Carpentry · Fast response in Cambridge and the Boston area · Free estimate 24h

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Cambridge homeowners live with some of the oldest residential wood-frame buildings in America, many built before the Civil War, and the freeze-thaw cycles, salt air, and nor'easters of New England take a steady toll on sills, joists, fascia, and trim.

We are Boston Carpentry, based in Boston and serving Cambridge and the surrounding area since 2016. We repair wood rot, termite damage, structural framing, and finish carpentry in the historic homes, university-area townhouses, and classic triple-deckers across Cambridge 2138. When you find soft wood, a bouncy floor, or damage after a pest inspection, call us at (857) 353-6607 for a straightforward on-site look and an honest estimate.

Carpentry in Cambridge (2138)

Cambridge's housing stock spans centuries. You have colonial-era wood-frame homes near the Charles River, Federal-period townhouses on residential streets near Harvard Square and the university, and solid brick rowhouses built in the late 1800s and early 1900s. Many properties sit on tight lots with limited access, shared walls, and dense neighborhood layouts that call for careful planning and precision work. The freeze-thaw cycles of a New England winter, combined with coastal moisture and humidity, create ideal conditions for wood rot to advance in sills, rim joists, fascia, and deck framing. Termite pressure is real here, and original framing timbers that have stood for 150 years or more can fail quickly once moisture and insects take hold.

Our team has been working through these conditions across Boston and Cambridge for over eight years. We know how to assess what can be repaired, what needs replacement, and how to work around the constraints of a dense urban neighborhood, tight HOA rules, and the need to keep your property secure and livable during the job.

Our services in Cambridge

How a Job Works in Cambridge

We start with a free on-site assessment. You describe what you have noticed, we examine the wood in question, and we explain what we see. If you have a pest inspection report, bring it along. We will take photos, measure, and give you a clear written estimate before any work begins. There are no surprises.

Once you approve the estimate, we schedule the work. For structural repairs like floor joist or beam work, you may need a permit from the Cambridge Building Department (we can advise you to check with them directly on thresholds and requirements). We coordinate access carefully in Cambridge's tight neighborhoods, protect your property and your neighbors' during the job, and work to minimize disruption. We bring our own materials and tools, and we leave your site clean at the end of each day.

When the work is done, we walk through with you, answer your questions, and make sure you are satisfied. If the job touched the building envelope or structural framing, we can help you document the work for your records or for an insurance claim if one is relevant.

Pricing in Cambridge depends on the scope, access, and condition of the wood. Wood rot repair in siding or trim typically runs from $650 to $1,500 for a localized area. A soft or bouncy subfloor, or damage to a floor joist, usually costs $1,800 and up, depending on how much wood needs replacement and how accessible the framing is. Termite damage repair starts at $1,200. Finish carpentry, trim, crown molding, and baseboard installation run from $450 to $1,100 per room or project, depending on the scope and detail. Custom built-ins and shelving start at $1,900. Exterior work like fascia, soffit, or deck repair typically begins at $700 to $900. Call us at (857) 353-6607 for a free estimate on your specific job. We will give you a realistic number based on what we see.

✅ EPA Lead-Safe Certified Firm, fully insured for work in Cambridge and nearby areas.

I found soft wood in my sill plate after a pest inspection. Do I need to replace the whole sill, or can you repair it?
It depends on how much of the sill is affected and how deep the rot runs. If the damage is localized to one section and the structural wood beneath is sound, we can cut out the bad wood, sister in new framing, and restore the damaged area. If the sill is compromised along a long span or the rim joist is involved, replacement is the honest answer. We assess it on site and explain your options. Many Cambridge homes have original sills that are repairable if caught early.
My floor feels bouncy and slightly out of level in one room. What could that be, and is it an emergency?
A soft or bouncy floor usually means the subfloor or floor joists underneath have absorbed moisture and begun to fail. This is not an emergency that will happen overnight, but it is worth having us look at it promptly. We can identify which joists or subflooring are affected, explain what caused the moisture (often a plumbing leak or foundation seepage), and propose a repair. Floor joist repair typically starts at $1,800 depending on the span and how much wood needs replacement. Call us at (857) 353-6607 to schedule an assessment.
What does finish carpentry cost in Cambridge, and what does it include?
Finish carpentry covers trim, casing, crown molding, baseboard, and interior door installation. In Cambridge, a typical room with new baseboard and door casing runs $450 to $1,100 depending on the perimeter, the detail of the molding, and whether you are matching historic profiles or installing new work. Crown molding and baseboard installation alone often starts at $450. Custom built-ins and shelving begin at $1,900. We can discuss your project in detail at (857) 353-6607 and provide a written estimate.
Do I need a permit for structural carpentry work in Cambridge?
Permits are commonly required for structural work such as replacing floor joists, replacing or sistering beams, removing or altering a load-bearing wall, and work on stairs or exterior decks. Requirements and thresholds vary by municipality. Contact the Cambridge Building Department directly to confirm what applies to your project before we begin. We can advise you on the scope of work and what to ask them about, but the building department sets the rules for your property.
My building has an HOA. Will your work require HOA approval in Cambridge?
Many Cambridge properties, especially in converted townhouses and condominium buildings, have HOA rules about exterior alterations, deck work, and visible modifications. Interior finish carpentry and repairs usually do not require approval, but exterior work often does. We recommend checking your HOA documents or contacting your board before we start. If approval is needed, we can provide detailed scope and photos to support your request. We work with HOA rules regularly in Cambridge and understand the coordination involved.
Are you fully insured for work at my Cambridge home?
Yes. We carry full general liability and workers' compensation insurance. Our team is fully insured on every job. If your work qualifies for an insurance claim, we can help you document the damage and the repairs for your records. We cannot promise that a claim will be approved or predict coverage, but we will provide clear documentation of what we found and what we repaired.
What is the best time of year to schedule carpentry work in Cambridge?
Spring through fall is ideal for exterior work like fascia, soffit, deck repair, and siding work, since we need dry conditions and good access. Interior work like finish carpentry, built-ins, and structural repairs can happen year-round. Winter nor'easters and heavy snow can delay exterior projects, so if you discover damage in the fall or winter, we recommend scheduling the repair for spring if it is not urgent. If you have active water intrusion or a structural concern, we can often work around weather to get it sealed and stabilized. Call us at (857) 353-6607 to discuss timing for your job.
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Our services

Our Carpentry Services in Boston

All your work handled by qualified professionals in Boston

Wood Rot & Dry Rot Repair

We cut back to sound wood, find the water that caused it, and rebuild to last.

Included in your service

  • Probing to map how far the decay actually runs
  • Decayed framing, siding and trim cut out, not filled over
  • Rebuilt in redwood, Douglas fir or primed rot-resistant stock
  • The moisture source traced and closed, or the rot returns
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Termite Damage Repair

The exterminator handles the insects. We rebuild the wood they left behind.

Included in your service

  • We work from your pest inspection report, section by section
  • Eaten studs, sill plates, rim joists and subfloor replaced
  • Structural integrity restored before finishes go back on
  • No treatment, no fumigation: pest control is a separate trade
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Floor Joist & Subfloor Repair

Soft, bouncy or sloping floors almost always start under the finish surface.

Included in your service

  • Joists, subfloor and bearing points inspected from below
  • Sistering where a joist is sound enough to keep
  • Full joist or subfloor replacement where it is not
  • Straight answer on what is old settling and what is real damage
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Beam Replacement & Load-Bearing Wall Removal

Real structural carpentry: engineered beams, headers, and openings done to spec.

Included in your service

  • Temporary shoring set before anything load-bearing comes out
  • Engineered beams and headers installed to the drawings
  • We say plainly when your job needs a structural engineer first
  • Built to the permit set, ready for city inspection
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Framing & Structural Carpentry

Straight, plumb and square: the bones every finish detail depends on.

Included in your service

  • New interior walls, openings, garage and basement build-outs
  • Stud framing, headers and blocking sized for the span
  • Fire and water damaged framing cut back and rebuilt
  • Laid out so drywall, trim and cabinets land where they should
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Finish & Trim Carpentry

Tight miters, scribed fits, consistent reveals. This is where a carpenter shows.

Included in your service

  • Casing, paneling and wainscoting fitted to the room as built
  • Scribing to walls that are neither flat nor plumb
  • Coped joints on inside corners instead of caulked gaps
  • Profiles matched to existing Victorian and Edwardian millwork
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Crown Molding & Baseboard Installation

Crown, base and casing cut for the ceiling you actually have, not a perfect one.

Included in your service

  • Coped inside corners, mitered and glued outside corners
  • Baseboard, chair rail and window trim run to a clean line
  • Period profiles matched or kept crisp and modern, your call
  • Filled, sanded and caulked ready for paint
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Custom Built-Ins & Shelving

Built for the alcove you have: bay windows, sloped ceilings, awkward corners.

Included in your service

  • Bookshelves, window seats, media walls and Murphy beds
  • Designed around compact floor plans, not around stock sizes
  • Scribed and shimmed so nothing reads as an add-on
  • Face frames, doors and drawers aligned before we leave
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Interior Door Installation & Repair

Doors that stick or swing open on their own are usually the frame, not the door.

Included in your service

  • Jamb, hinges and reveal checked before anything is replaced
  • Doors hung, planed and adjusted to a settled opening
  • Damaged jambs and door frames repaired rather than swapped
  • Pocket and barn door hardware installed and tuned
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Exterior & Entry Door Installation

Entry, back and French doors set weather-tight against fog and wind-driven rain.

Included in your service

  • Opening flashed and sill pan set before the unit goes in
  • Rotted frames and thresholds repaired or fully replaced
  • Shimmed plumb so the door seals along its whole edge
  • Weatherstripping, hardware and strike plates fitted properly
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Cabinet & Vanity Installation

Level cabinets in a house where almost nothing is level. That is the whole job.

Included in your service

  • Floors and walls checked and a true level line struck first
  • Boxes shimmed, scribed to out-of-square walls and fastened
  • Kitchen, bath vanity and laundry storage set as one run
  • Doors, drawers and hardware aligned and adjusted at the end
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Stair & Railing Repair

Squeaky treads and loose banisters, repaired without rebuilding the whole stair.

Included in your service

  • Stringers, treads and risers checked for wear and movement
  • Loose newel posts and balusters re-anchored, not just glued
  • Period railings restored where the original stock is sound
  • Handrails and attic ladders installed to code height and grip
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Deck & Porch Repair

Repair first. We only recommend replacing when the framing no longer justifies it.

Included in your service

  • Boards, posts, stairs and framing probed for hidden decay
  • Rotted members replaced, sound structure kept and reused
  • Ledger connection and flashing checked where the deck meets the house
  • An honest repair-versus-replace number before work starts
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Fascia, Soffit & Exterior Trim Repair

Soft fascia and peeling paint at the roofline are the first sign of rot moving in.

Included in your service

  • Fascia, soffit and exterior trim replaced back to sound wood
  • Primed rot-resistant material on all six faces before install
  • Gaps closed so moisture and pests stop getting into the roofline
  • Ready for paint, with the water path corrected first
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