L7 Principal Development LLC.

L7 Principal Development LLC. Commercial, Residential, General Contractor, , , services

L7 Principal Development has been providing high quality general contracting services in the Bay Area since 1986. We are fully insured, bonded and licensed, and are LEED Certified Professionals. We specialize in a wide variety of contracting services including home additions, remodeling, home improvements, construction services and much more.

08/25/2026
07/30/2026

Built Right. Done Right.
From repairs and renovations to full construction projects, L7 Principal Development delivers quality workmanship you can count on. Honest service, dependable crews, and results that last.
Call us today for a free estimate: (415) 990-2139
L7 Principal Development — Building trust, one project at a time.

07/30/2026

L7 PRINCIPAL DEVELOPMENT INC.
Built Right. Done Right.
From repairs and renovations to residential and commercial construction projects, L7 Principal Development delivers quality workmanship you can count on. Honest service, dependable crews, and results that last.
Call us today for a free estimate: (415) 990-2139
L7 Principal Development — Building trust, one project at a time.

07/29/2026
They drove me out of the crib, but there are other places for the God…..1Love
03/30/2026

They drove me out of the crib, but there are other places for the God…..1Love

I had tom learn this the hard way…. my way up!
01/16/2026

I had tom learn this the hard way…. my way up!

The crew
01/13/2026

The crew

Address

860 E Lewelling Boulevard
Hayward, CA
94541

Opening Hours

Monday 7am - 5pm
Tuesday 7am - 5pm
Wednesday 7am - 5pm
Thursday 7am - 5pm
Friday 7am - 5pm
Saturday 7am - 3pm

Telephone

+14159902139

Website

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