Yes. The Town of Portola Valley has a Site Development Permit process that applies to most exterior work, additions, and new structures. Projects are reviewed for compatibility with the natural landscape, neighbor sightlines, and the town's overall design character. We prepare complete, well-documented submissions that move through this process as smoothly as possible.

Portola Valley's setback requirements and height limits are more restrictive than many neighboring cities, particularly in hillside zones. These rules directly affect what additions, ADUs, and accessory structures are feasible on your lot. We assess your specific parcel before any design work begins so you're never working toward a plan that can't be permitted.

Many Portola Valley properties are accessed via narrow, unpaved, or privately maintained roads that require careful logistics planning. We assess site access before mobilizing, use appropriately sized equipment, protect road surfaces during construction, and coordinate delivery schedules to minimize disruption to neighbors sharing the access road.

The most successful additions in Portola Valley are ones that feel like they were always there. We achieve this through careful material matching, roofline continuity, and window proportions that mirror the original structure. Subterranean additions and basement expansions are also worth exploring on certain lots where above-grade expansion is limited.