Royal ADU BuildersGeneral contractor in Palo Alto, CA

Royal ADU Builders is ranked #34 of 839 general contractors in Palo Alto 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.

Royal ADU Builders 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.

Serves Palo Alto and 11 towns within 25 miles: Stanford, Menlo Park, East Palo Alto, Los Altos Hills, Los Altos, Atherton, North Fair Oaks, Mountain View, Woodside, Redwood City and Sunnyvale. 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.

Royal ADU Builders 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.

Call Royal ADU Builders on (650) 648-6557. The business is at 415 Cambridge Ave CA, Palo Alto, CA 94306. Its website is linked in the key facts on this page. Ask for a written estimate before any work starts.