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Hamilton ExteriorsGeneral contractor in Castro Valley, CA

Hamilton Exteriors is a general contractor at 21634 Redwood Rd, Castro Valley, CA 94546, ranked #40 of 1,182 general contractors in Castro Valley and rated 3.0 from 6 Google reviews. Open 24 hours a day, 7 days a week.

Castro Valley, CAUpdated 0 paid placements in any rankingHow we rank

Call (650) 977-3351Website ↗

Key facts

Key facts about Hamilton Exteriors
Address21634 Redwood Rd, Castro Valley, CA 94546Get directions
Phone(650) 977-3351
Websitehamilton-exteriors.com
HoursOpen 24 hours, 7 days a week
Google rating3.0 from 6 Google reviews

Trades

Each trade shows the evidence we matched it on.

Service area

Serves Castro Valley and 11 towns within 25 miles: Hayward, Fairview, Cherryland, Ashland, San Lorenzo, San Leandro, Union City, Dublin, San Ramon, Danville and Moraga.

Based in Castro Valley, CAView on map

Opening hours

Opening hours for Hamilton Exteriors
DayHours
MondayOpen 24 hours
TuesdayOpen 24 hours
WednesdayOpen 24 hours
ThursdayOpen 24 hours
FridayOpen 24 hours
SaturdayOpen 24 hours
SundayOpen 24 hours
  • Open 24/7
  • Open evenings — no
  • Open Saturdays
  • Open Sundays
  • Emergency service

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

Hamilton Exteriors compared with nearby businesses
BusinessRankCR ScoreGoogle ratingLicense verifiedSaturdaySundayDistance away
Hamilton Exteriors (this business)—573.0 (6)—YesYes
Finest Builders#38575.0 (52)—NoYes8.6 mi
Sima#39574.3 (11)—YesYes7.1 mi
Construction Remodeling In Bay Area#41575.0 (60)—YesYes2.4 mi

See all 1182 ranked general contractors in Castro Valley

Reviews

ContractorsRanked reviews

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Google

3.0from 6 Google reviews

Hired Hamilton Exteriors? Write a review

Questions about Hamilton Exteriors

How is Hamilton Exteriors ranked in Castro Valley?

Hamilton Exteriors is ranked #40 of 1,182 general contractors in Castro Valley 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 Hamilton Exteriors’ hours?

Hamilton Exteriors is open 24 hours a day, 7 days a week. Its listed hours are Open 24 hours, 7 days a week. On Saturdays it is open Open 24 hours, and on Sundays Open 24 hours. Hours come from the business listing; holiday hours may differ.

What areas does Hamilton Exteriors serve?

Serves Castro Valley and 11 towns within 25 miles: Hayward, Fairview, Cherryland, Ashland, San Lorenzo, San Leandro, Union City, Dublin, San Ramon, Danville and Moraga. 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 Hamilton Exteriors?

Hamilton Exteriors has a rating of 3.0 from 6 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 Hamilton Exteriors?

Call Hamilton Exteriors on (650) 977-3351. The business is at 21634 Redwood Rd, Castro Valley, CA 94546. Its website is linked in the key facts on this page. Ask for a written estimate before any work starts.

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