Yes. The first estimate — including a site visit for most projects — is free and comes with a written, itemized proposal. There is no obligation to hire us.
Yes. Yi Builders is Yi Construction LLC, California CSLB License No. 1103231. You can verify any contractor license on the CSLB website.
Both. Alongside kitchen, bathroom, whole-home remodeling, additions and ADUs, we specialize in French drains, channel drains, retaining walls and concrete work — the site work that protects the inside of your home.
It gives a ballpark range based on typical project sizes and our standard unit pricing. It is not a binding quote — the final price is set after a free site visit, when we can see the actual conditions.
We accept online payment by card or bank transfer through Stripe — a deposit to schedule work, then progress payments as stages are completed. You can pay from the Pay Online page using your invoice number.
The San Francisco Bay Area, including San Francisco, the Peninsula, the East Bay and the South Bay. If your city is not listed on our Service Area page, call us — we often travel a little further for the right project.