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ADU San MateoGeneral contractor in San Mateo, CA

ADU San Mateo is a general contractor at 3 E 3rd Ave Suite 200, San Mateo, CA 94401, ranked #26 of 888 general contractors in San Mateo and rated 5.0 from 3 Google reviews. Open 24 hours a day, 7 days a week.

San Mateo, CAUpdated 0 paid placements in any rankingHow we rank

Call (650) 200-2040Website ↗

Key facts

Key facts about ADU San Mateo
Address3 E 3rd Ave Suite 200, San Mateo, CA 94401Get directions
Phone(650) 200-2040
Websiteadusanmateo.com
HoursOpen 24 hours, 7 days a week
Google rating5.0 from 3 Google reviews

Trades

Each trade shows the evidence we matched it on.

Service area

Serves San Mateo and 11 towns within 25 miles: Burlingame, Foster City, Hillsborough, Belmont, Millbrae, Redwood Shores, San Carlos, San Bruno, Redwood City, South San Francisco and Half Moon Bay.

Based in San Mateo, CAView on map

Opening hours

Opening hours for ADU San Mateo
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

ADU San Mateo compared with nearby businesses
BusinessRankCR ScoreGoogle ratingLicense verifiedSaturdaySundayDistance away
ADU San Mateo (this business)—575.0 (3)—YesYes
Ehret Co Plumbing & Heating#24584.6 (52)—YesYes15.1 mi
United Chimney Services Inc#25574.7 (46)—YesYes9.9 mi
CSA Home and Business Services#27575.0 (58)—YesYes22.4 mi

See all 888 ranked general contractors in San Mateo

Reviews

ContractorsRanked reviews

No ContractorsRanked reviews yet

Google

5.0from 3 Google reviews

Hired ADU San Mateo? Write a review

Questions about ADU San Mateo

How is ADU San Mateo ranked in San Mateo?

ADU San Mateo is ranked #26 of 888 general contractors in San Mateo 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 ADU San Mateo’s hours?

ADU San Mateo 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 ADU San Mateo serve?

Serves San Mateo and 11 towns within 25 miles: Burlingame, Foster City, Hillsborough, Belmont, Millbrae, Redwood Shores, San Carlos, San Bruno, Redwood City, South San Francisco and Half Moon Bay. 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 ADU San Mateo?

ADU San Mateo has a rating of 5.0 from 3 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 ADU San Mateo?

Call ADU San Mateo on (650) 200-2040. The business is at 3 E 3rd Ave Suite 200, San Mateo, CA 94401. Its website is linked in the key facts on this page. Ask for a written estimate before any work starts.

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