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.
Get a Free Berkeley EstimateBerkeley 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.
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.
Learn more →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.
Learn more →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.
Learn more →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.
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."
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