Uni Construction + Design
- Permit
3 of these companies are based in West Covina; the others serve West Covina from towns including Covina (3 mi), Anaheim (15 mi) and Whittier (9 mi).
8 open weekends · 20 rated 4.5+ · 4 show a license
Data verified October 15, 2026
Listed for property owners in and around West Covina, CA, these 24 companies do engineering work for properties. Listings show the disciplines each firm names on its own website, from structural to civil site work and environmental assessment, with ratings and quotes from public reviews.

21 of the 24 companies on this page have a rating, from 4.3 to 5.0 across 227 reviews; 1 has 50 or more reviews and 20 are rated 4.5 or higher. 8 are open on Saturdays and 4 on Sundays. 4 show a license on their websites and 2 have a BBB rating of A or A+. 15 have ten or more years of experience, the longest 74 years. 8 give free estimates; 1 is family- or locally-owned and 1 lists coupons or special offers. We have a website on file for 23 of the companies on this page; 17 publish a contact page and 19 list a public email. We count these figures across the companies on this page; distances are straight-line, and hours and prices change, so confirm the details with the company before you book.
4 of the 24 listings for West Covina show a license on their websites. Registration belongs to an individual, so match the name on the seal to the person doing your work, and verify it with the state board rather than trusting a badge on a homepage.