Berkeley, CA

Window Replacement & Door Installation in Berkeley

Windows 4U serves Berkeley homeowners from the flatlands to the hills — Elmwood, Rockridge, Claremont, North Berkeley, and everywhere in between. We're a licensed East Bay crew that handles every install ourselves, backed by a 4-year workmanship warranty.

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Berkeley's Window & Door Specialists

Berkeley is full of beautiful older homes — craftsman bungalows, Spanish Revival stucco, Victorian-era two-stories — and most of them still have their original single-pane windows. Replacing them is one of the highest-impact upgrades a Berkeley homeowner can make: better insulation, less street noise, and meaningfully lower energy bills. We know how to work with older construction, match trim profiles, and navigate Berkeley's building permit process when required.

Window & Door Services for Berkeley Homeowners

Window Replacement

Vinyl, fiberglass, and aluminum windows for Berkeley's diverse housing stock. From single craftsman windows to whole-house packages. Retrofit and full-frame options, all installed with care for older construction.

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Entry Door Installation

Steel and fiberglass entry doors that improve security, energy efficiency, and curb appeal. Properly installed with full weatherstripping and hardware — a noticeable upgrade from day one.

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Patio & Sliding Doors

Sliding glass doors and French patio doors for Berkeley homes with rear yards and decks. Vinyl, aluminum, and fiberglass systems with energy-efficient glass to keep your home comfortable year-round.

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Recent Projects in the East Bay

Arched window replacement on stucco home, East Bay
Full house window replacement, East Bay
4-panel sliding door installation, East Bay
View full project gallery →

Old Home Expertise. No Subcontractors.

Older Berkeley homes come with quirks — settling frames, non-standard opening sizes, plaster walls, and trim details worth preserving. We've seen it all. Our team takes the time to measure carefully, work cleanly, and deliver a result that looks like it was always meant to be there.

We do every job with our own crew — no subcontractors ever — so the quality is consistent and you always know who to call if anything comes up after installation.

  • Experienced with craftsman, Victorian & stucco homes
  • No subcontractors — our crew, every time
  • Berkeley building permit knowledge
  • 4-year workmanship warranty on every install
  • Licensed, bonded & insured (CA Lic. #1097508)

Neighborhoods We Serve in Berkeley

Elmwood Rockridge Claremont Hills North Berkeley South Berkeley Thousand Oaks Westbrae Berkeley Hills Panoramic Hill Downtown Berkeley

Also serving neighboring cities: Oakland, Orinda, Lafayette, Walnut Creek, and the wider East Bay.

★★★★★

"We have a 1930s craftsman and were nervous about finding someone who could handle the older framing without damaging our trim. Windows 4U did a beautiful job — every window fits perfectly, the trim was left untouched, and the noise reduction from the street is remarkable. Highly recommend."

SR
Sarah R.
Berkeley, CA · Google

Trusted Brands We Install

Milgard Alside Anlin Simonton ProVia Marvin Windsor Weather Shield

Free Estimate for Your Berkeley Home

Call, text, WhatsApp, or fill out our form. We respond fast and can often schedule your in-home estimate within a day or two.