Kitchen remodels
New layouts, cabinetry, counters and lighting — designed around how you actually cook.
Typically $45k–$90k
Design-build / Licensed GC / Since 2008
Renovations that finish
Renovations that finish
when we said they would.
In-house design and build under one roof, a fixed-bid proposal before a single wall comes down, and weekly progress updates — for kitchens, baths and additions across the Boston suburbs.
Licensed & Insured GC
Family-owned since 2008
4.9 · 214 reviews
Lead-Safe Certified
Now booking Q3 2026 projects
Fixed-bid proposals
In-house design & build
Weekly photo updates
Licensed & insured
Lead-Safe Certified
1-year workmanship warranty
480+ projects since 2008
What we build
Six ways we remodel a home
Every project starts with a free consultation and a measured plan. We design it, price it as a fixed bid, then build it with our own crews.
Bathroom remodels
Curbless showers, tiled tubs and double vanities, waterproofed and built to last.
Typically $22k–$40kAdditions
Bump-outs, second stories and primary suites — framed to match the original house.
Free consultationBasement finishing
Dry, insulated living space — family rooms, guest suites, gyms and home offices.
Free consultationWhole-home renovation
A full reset — layout, systems and finishes — phased so the house stays livable.
Free consultationDecks & exteriors
Composite and cedar decks, porches and siding — weather-detailed for New England.
Free consultation
Why Keystone
An architecture studio
An architecture studio
that also swings hammers
We've run Keystone the same way since 2008: design and price the whole job up front, then build it with people who answer to us — not a rotating cast of subs we met last week.
See how a project runsA fixed bid, not time-and-materials
After design is done, you get one number for the whole job. No open-ended hourly meter ticking in your kitchen.
Weekly progress updates with photos
Every Friday you get a short note and a set of site photos — so you know exactly where things stand, even if you're traveling.
In-house design and build, one roof
The designer who drew your kitchen sits across from the builder who frames it. No handoffs, no "the architect didn't tell us."
On-time completion, on the calendar
Your proposal lists a finish date and we plan backward from it. 94% of our projects since 2008 have wrapped on or before that date.
Before / after
The same rooms, a few weeks later
Three recent projects from the neighborhood. Same footprint, same family — measured, designed and rebuilt by our crews.
Before
After
Before
After
Before
After
How a project runs
Five steps, no surprises
From the first walkthrough to the final punch list, here's exactly how Keystone moves — and where you sign off.
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STEP 01
Consultation
We visit, measure, and talk through what you want and a realistic budget — free, no obligation.
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STEP 02
Design & fixed bid
Our designers draw the space and select finishes. You approve, and we hand you one fixed-bid number.
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STEP 03
Permits
We pull every permit and schedule every inspection with the town. It's all on us — you don't visit town hall.
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STEP 04
Build — weekly updates
Our crews build to the plan. Every Friday you get a progress note and a fresh set of site photos.
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STEP 05
Walkthrough & warranty
We walk every room together, finish the punch list, and hand you a 1-year workmanship warranty.
480+
Projects completed since 2008
94%
On-time completion rate
5–7 wks
Average kitchen-remodel timeline
71%
Repeat & referral business
Reviews
What the neighbors say
Bigger jobs, fewer reviews — and people tend to write at length when you've lived in their house for two months.
4.9
from 214 reviews
Google · 4.9 (138)
h
Houzz · 4.9 (76)
Verified homeowner reviews
"We interviewed four contractors for our kitchen and Keystone was the only one who showed up with a real drawing and a real number. The fixed bid held — the only change order was the upgraded range we asked for ourselves. They finished two days early, and the Friday photo updates meant I never had to chase anyone for a status."
"Our 1920s house had no square corners and a basement full of surprises. When they opened a wall and found old knob-and-tube wiring, Keystone walked me through the options the same afternoon, priced it clearly, and kept the schedule on track. That kind of honesty is rare. The finished living space is now where the whole family ends up every evening."
"We added a primary suite over the garage and were nervous about living in the house during construction. Keystone sequenced the work so we only lost the use of one room at a time, sealed everything off cleanly, and the site was swept every single afternoon. Having the designer and the builder be the same company meant zero finger-pointing."
"Found Keystone on Houzz after seeing a bathroom they did two streets over. The proposal was the most detailed of any we received — line by line, you could see where the money went. They turned a cramped hall bath into a curbless spa shower, and a year later, when a grout line needed attention, they came back under warranty without a fuss."
"A whole-home renovation is a big leap of faith. Keystone phased it so we kept a working kitchen and one bathroom the entire time. The weekly updates were genuinely reassuring — real photos, plain language, and a heads-up before anything noisy. They hit the finish date on the proposal almost to the day."
"We've now used Keystone twice — a deck in 2021 and a kitchen last spring. Both times the crew was the same faces, on time, tidy, and respectful of the fact that we both work from home. The second project is why I trust the first review I wrote: they were exactly as good the second time around."
Service area
Remodeling the Boston suburbs
We work a tight radius on purpose — close enough that our crews aren't commuting half the day, and we know each town's permitting office by name.
- Newton
- Brookline
- Lexington
- Arlington
- Belmont
- Winchester
- Needham
- Wellesley
Just outside these towns? Call us — if your project's a good fit, we'll often stretch the line a little.
Pricing & guarantee
Honest numbers, stood behind
We'd rather lose a job to a clear price than win one with a low guess. Here's how Keystone handles money — and what happens after the dust settles.
Free consultation
An on-site visit, measurements and a frank budget conversation — no charge, no pressure.
A fixed-bid proposal
Once design is approved, one number covers the whole job. Changes only happen if you ask for them.
Real-world ranges
Kitchens typically run $45k–$90k and baths $22k–$40k — so you can plan before we ever meet.
1-year warranty
Every project is backed by a 1-year workmanship warranty. If our work needs attention, we come back.
Common questions
The things homeowners ask first
Still wondering about something? A quick call clears most of it up — we're happy to talk before you commit to anything.
Call (555) 617-8890Is it a fixed bid or time-and-materials?
A fixed bid. Once the design is finished and you've approved the drawings and finishes, we hand you one price for the entire project. You won't see an hourly meter, and the only way the number moves is if you decide to add or change something — and even then, we price that change clearly before any work happens.
Who handles permits and inspections?
We do — all of it. As a licensed construction supervisor, Keystone pulls every required permit and coordinates each inspection with your town's building department. We've worked in Newton, Brookline, Lexington and the rest for years, so we know each office's quirks. You never need to visit town hall or chase paperwork.
Can we live in the house during the remodel?
For most kitchen, bath and addition projects, yes. We seal off the work zone with dust barriers, keep a clear path through the house, and sweep the site at the end of every day. We sequence whole-home renovations so you always keep a working kitchen and at least one bathroom. If a phase truly isn't livable, we'll tell you that honestly up front.
What happens if you find something behind the wall?
Older homes hide things — outdated wiring, hidden water damage, a beam that isn't where the plans say. When we find something, we stop, show you exactly what it is with photos, and lay out the options and costs the same day. Nothing gets buried back in the wall, and no surprise charges appear on the final invoice. You decide how to proceed with full information.
What does the 1-year warranty actually cover?
For one full year after your walkthrough, our workmanship is covered — settling cracks, a sticking door, a grout line that needs attention, trim that's shifted. If something we installed isn't performing the way it should, we come back and make it right at no cost. Manufacturer warranties on appliances and fixtures run separately, and we hand you all of that paperwork at closeout.
Now booking Q3 2026 projects
Let's talk about your
Let's talk about your
home, room by room.
Tell us a little about the project and we'll set up a free consultation. No hard sell — just a measured look and an honest conversation about what's possible.
Call (555) 617-8890
Mon–Fri 8am–5pm
Request a free consultation
We reply within one business day.