549 Duncan Street, Noe Valley

The building

The Assessor lists 549 Duncan Street as a one-story single-family house built in 1956. The lot measures 2,850 square feet and is zoned RH-2, a two-family residential district. Planning maps the parcel in the 40//40-R-4 height and bulk district. The most recent permitted work on file with Building Inspection was completed in 2024.

Getting around

This block of Duncan Street meets Castro Street. Muni stops at Noe and 28th and at Noe and 27th are the closest, both about a three-minute walk away. Within a five-minute walk there are Muni stops at three intersections. Douglass Playground, about 8 acres, is about an eight-minute walk away. Duncan and Castro Open Space is closer still, about 300 feet on foot.

Noe Valley / Castro

Noe Valley and the Castro sit in the central-southern hills of San Francisco, with residential streets, local commerce, and strong neighborhood identity.

Source: City and County of San Francisco, Assessor-Recorder (2025 roll), Planning, Building Inspection, Public Works, SFMTA, and Recreation and Parks records via DataSF, retrieved October 31, 2026. Walking times are estimates.