How much do replacement windows cost in Cambridge?

Installed window cost in Cambridge depends on the frame material, size and style, the glass package, and whether each opening is a simple insert or a full-frame replacement. Older Victorians and triple-deckers with out-of-square openings, plus historic-review requirements, push some jobs toward the higher end. Use the calculator on this page for a live estimate.

Do I need a permit to replace windows in Cambridge?

Yes — window replacement in the City of Cambridge requires a building permit from the Inspectional Services Department (ISD). We pull the permit as part of the job, so you don't have to handle the paperwork.

Can I replace windows in a Cambridge historic or conservation district?

Usually yes, but Cambridge has some of the strictest review in the state. Exterior changes in a local historic district or a neighborhood conservation district — such as Mid Cambridge, Avon Hill or Half Crown–Marsh — need approval from the Cambridge Historical Commission. We spec period-appropriate profiles and prepare the submission so your windows meet the guidelines.

Do you work on triple-deckers and condo buildings?

Yes. Cambridge's triple-deckers, two-families and condo buildings are a big part of what we do. We can phase the work by unit and coordinate access with tenants or a condo association.

Can you get energy rebates for Cambridge homeowners?

Often, yes. Replacing single-pane windows with ENERGY STAR Most Efficient models can qualify for Mass Save rebates and the 0% HEAT Loan through Eversource and National Grid. (The federal 25C window tax credit expired at the end of 2025.) We book the required home energy assessment and handle the paperwork with you.

How long do replacement windows last?

Quality replacement windows typically last 20 to 30 years or more. Vinyl, composite and fiberglass frames are low-maintenance and won't rot, and the insulated glass holds its seal for decades — backed by a written workmanship warranty on top of the manufacturer's product warranty.

How long does the installation take?

Most homes are completed in one to two days once your custom windows arrive. We replace one opening at a time, protect floors and furniture, and clean up completely before we leave.

Replacement Windows in Cambridge, MA

Replacement windows in Cambridge, MA.

Energy-efficient windows and doors for Cambridge's Victorians, triple-deckers and condos — priced in seconds, installed by a licensed local crew.

Licensed & insured Cambridge ISD permits pulled Mass Save rebate help

Windows that respect how Cambridge is built — and reviewed.

From the colonials around Harvard Square and the worker cottages of Cambridgeport to the triple-deckers of North Cambridge and the condos of Kendall, Cambridge packs centuries of housing into a few square miles — much of it under some of the strictest historic review in the state. We measure each hand-built opening, spec the right insert or full-frame approach, and seal it against driving rain and the freeze-thaw winters that wreck tired single-pane sashes and old storm windows.

Insert & full-frame replacement for Victorian, triple-decker and brick openings

Period-appropriate profiles for Cambridge Historical Commission review & conservation districts

We pull the City of Cambridge ISD permit and handle condo-association specs

Cambridge has the strictest window review in the state

Between the Cambridge Historical Commission and the city's neighborhood conservation districts — Mid Cambridge, Avon Hill, Half Crown–Marsh and others — a large share of the city's housing sits under design review, and the commission is one of the most active anywhere in Massachusetts. Before we order anything we confirm whether your address is regulated, because that determines what's allowed long before frame material or glass package even comes up.

Matching sightlines on a protected facade

Where review applies, approval usually hinges on the details: keeping the existing sash proportions, the muntin pattern and a true exterior profile rather than a flat applied grille. We spec windows that hold those sightlines — often simulated or true divided lights with the correct frame depth — so the replacement reads as original from the sidewalk while performing like a modern, sealed unit behind the glass.

Condos, tight lots and Kendall-area buildings

Much of Cambridge is condos, triple-deckers and two-families packed onto small lots with no driveway and street parking only. That makes staging and access part of the job, not an afterthought — we plan protection and material handling tightly, and on a condo building we work to the association's specs and coordinate access with the units involved.

We help Cambridge homeowners claim every rebate.

Energy-efficient windows in Cambridge can qualify for Mass Save rebates and the 0% HEAT Loan through Eversource and National Grid. Most installers leave that money on the table — we book the required home energy assessment and handle the paperwork with you.

Per-window Mass Save rebates on qualifying ENERGY STAR windows

0% HEAT Loan financing through Mass Save

ENERGY STAR Most Efficient products that qualify

Prefer to just talk?

Skip the calculator and tell us about your Cambridge project. We'll send a real price range — no driveway sales pitch, no obligation — and flag every rebate you qualify for.

Written estimate you keep

Reply within one business day

Permit, historic-approval & rebate guidance included

Replacement windows in Cambridge, MA.

What kind of window project?

How many windows?

Window style?

Frame material?

Glass package?

Want this price in writing?

Windows that respect how Cambridge is built — and reviewed.

A straight answer on price, in a city that rarely gives one.

Transparent pricing

Permits & historic approvals

Rebate experts

Licensed & insured

Every window style, installed across Cambridge.

Double-hung windows

Casement windows

Bay & bow windows

Picture windows

Sliding windows

Awning windows

What a Cambridge window replacement actually involves.

Cambridge has the strictest window review in the state

Matching sightlines on a protected facade

Condos, tight lots and Kendall-area buildings

We help Cambridge homeowners claim every rebate.

How the Mass Save rebate works

Window installation in every Cambridge neighborhood.

Harvard Square

Central Square

Porter Square

Cambridgeport

East Cambridge

North Cambridge

Mid-Cambridge

Riverside

Agassiz

Prefer to just talk?

Cambridge window questions, answered.

Get a real price on your Cambridge windows.