San Mateo County
General Contractor in Portola Valley
New construction, ADUs, additions and whole-home renovations — built and permitted by a licensed general contractor working in Portola Valley.
- Licensed CA General B #1112902
- Fully Insured
Building in Portola Valley
Every city in our area is its own jurisdiction with its own review process. What's true in one does not carry across the city line — which is why this page exists rather than a single generic service-area page.
Portola Valley is San Mateo County and largely hillside, with geologic review that is a genuine part of the schedule. A soils report is not optional here — it shapes the foundation design and therefore the price.
Permits. Work in Portola Valley is permitted through the Town of Portola Valley's building department. We carry the submittal and the plan-check corrections — that is our job, not yours.
What Fits Here
What we build in Portola Valley
New Construction
New Construction in Portola Valley, built and permitted by a licensed general contractor.
Learn more →Home Additions
Home Additions in Portola Valley, built and permitted by a licensed general contractor.
Learn more →Whole-Home Remodels
Whole-Home Remodels in Portola Valley, built and permitted by a licensed general contractor.
Learn more →Budget
What a Portola Valley project costs
We publish our real ranges rather than making you book a call to find them out, and our minimum project size is $20,000. What moves a number in Portola Valley is rarely the finishes — it is the site, the utilities and what turns up once something is opened.
Public record
Permits and ADU rules in Portola Valley
These are links to the city's own pages, not our summary of them. We carry the submittal and the plan-check corrections on a project we build, so this is not information you have to act on yourself. It is here because you should be able to check it either way.
Portola Valley starts with a preliminary meeting with a planner, and projects with geologic or fire-safety exposure can be routed to the Architectural and Site Control Commission rather than approved over the counter.
Pre-approved ADU plans. Portola Valley does not publish a pre-approved ADU plan gallery that we could find. Ask the Town of Portola Valley's building department directly before you assume there is nothing to build from, because these programs are being added city by city. Since AB 1332 took effect on January 1, 2025, California cities have had to run a pre-approved ADU plan program and post the approved plans publicly. Where a usable plan exists it can take real time and design cost out of a project, because the design has already been reviewed and only the site-specific work is left.
- Planning and Building Department, Town of Portola Valley
- Portola Valley local ADU rules, San Mateo County ADU Resource Center
Links checked August 2026 and pointing at government pages. Cities change both their pages and their rules, so confirm anything current with the Town of Portola Valley's building department. We deliberately do not publish Portola Valley permit fees or review times here: those move, they vary by project, and a number that is out of date is worse than no number at all.
Common Questions
Straight answers
Do you build in Portola Valley?
Do you handle the Portola Valley permit process?
What does building in Portola Valley cost?
Before you hire anyone
Worth knowing before you sign in Portola Valley
- How big a deposit can a contractor legally ask for? California caps it at $1,000. Most people are asked for far more.
- How to check a contractor's licence before you sign The CSLB lookup, and what a suspended bond actually means.
- Change orders and allowances, explained Where a fixed price stops being fixed, and what should be in writing.
- Why two ADU quotes can be $80K apart Fixed soft costs are most of the answer.
- Can I build an ADU on my lot? Setbacks, access, utilities and service capacity — a per-parcel answer.
- The inspection found unpermitted work. Now what? Three routes, and the one question to settle before you negotiate.
Nearby
Other cities we build in
Building in Portola Valley?
Book a 30-minute discovery call and we'll tell you what's realistic — scope, budget and timeline — whether or not we're the right builder for it.