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Keystone Home Improvements IncGeneral contractor in Alameda, CA

Keystone Home Improvements Inc is a general contractor in Alameda, CA, ranked #31 of 1,112 general contractors in Alameda and rated 5.0 from 18 Google reviews. Open Monday to Saturday.

Alameda, CAUpdated 0 paid placements in any rankingHow we rank

Call (510) 846-4021Website ↗

Key facts

Key facts about Keystone Home Improvements Inc
Phone(510) 846-4021
Websitekeystonehomeimprovements.com
HoursMonday to Friday: 8 AM – 7 PM; Saturday: 9 AM – 2 PM
Google rating5.0 from 18 Google reviews

Trades

Each trade shows the evidence we matched it on.

Service area

Serves Alameda and 12 towns within 25 miles: Sausalito, Noe Valley, San Francisco, Mission District, Tamalpais-Homestead Valley, Chinatown, Tamalpais Valley, Daly City, Tiburon, Strawberry, Visitacion Valley and Mill Valley.

Based in Alameda, CAView on map

Opening hours

Opening hours for Keystone Home Improvements Inc
DayHours
Monday8 AM – 7 PMevening
Tuesday8 AM – 7 PMevening
Wednesday8 AM – 7 PMevening
Thursday8 AM – 7 PMevening
Friday8 AM – 7 PMevening
Saturday9 AM – 2 PM
SundayClosed
  • Open evenings (after 6 PM)
  • Open Saturdays
  • Open Sundays — no

Typical general contracting prices

Typical general contracting prices
JobLowTypicalHigh
Kitchen remodelPer project: typical range of customer-reported remodels (about $75 to $250 per sq ft). US national range × 1.04 Pacific factor (2025 Cost vs. Value Report)$15,240$28,190$43,470
Bathroom remodelPer bathroom: typical range of customer-reported remodels. US national range × 1.06 Pacific factor (2025 Cost vs. Value Report)$7,050$12,880$18,720

Market ranges for the trade, checked October 2026, not a quote from this business. Ask for a written estimate.

Compare nearby general contractors

Keystone Home Improvements Inc compared with nearby businesses
BusinessRankCR ScoreGoogle ratingLicense verifiedSaturdaySundayDistance away
Keystone Home Improvements Inc (this business)—575.0 (18)—YesNo
Sima#29574.3 (11)—YesYes18.6 mi
JLQ CONSTRUCTION INC#30575.0 (25)—YesYes7.5 mi
Plant Construction Company, L.P.#32574.9 (9)—YesYes8.3 mi

See all 1112 ranked general contractors in Alameda

Reviews

ContractorsRanked reviews

No ContractorsRanked reviews yet

Google

5.0from 18 Google reviews

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Questions about Keystone Home Improvements Inc

How is Keystone Home Improvements Inc ranked in Alameda?

Keystone Home Improvements Inc is ranked #31 of 1,112 general contractors in Alameda by CR Score, with 57 out of 100 as of October 2026. The score weighs reputation, credentials, review volume, recency, availability, trade focus, proximity, claimed profile, partnered and ContractorsRanked reviews. No business can pay to change its rank.

What are Keystone Home Improvements Inc’s hours?

Keystone Home Improvements Inc is open Monday to Saturday. Its listed hours are Monday to Friday, 8 AM – 7 PM; Saturday, 9 AM – 2 PM. On Saturdays it is open 9 AM to 2 PM and closed on Sundays. Hours come from the business listing; holiday hours may differ.

What areas does Keystone Home Improvements Inc serve?

Serves Alameda and 12 towns within 25 miles: Sausalito, Noe Valley, San Francisco, Mission District, Tamalpais-Homestead Valley, Chinatown, Tamalpais Valley, Daly City, Tiburon, Strawberry, Visitacion Valley and Mill Valley. The list is based on the business's location and the usual service radius for general contracting. Confirm your address is covered when you call.

What do Google reviews say about Keystone Home Improvements Inc?

Keystone Home Improvements Inc has a rating of 5.0 from 18 Google reviews. The CR Score adjusts the star rating for review count, so a high rating from a few reviews counts for less than the same rating from many.

How do I contact Keystone Home Improvements Inc?

Call Keystone Home Improvements Inc on (510) 846-4021. Its website is linked in the key facts on this page. Ask for a written estimate before any work starts.

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