Mountain View, CA Building Setbacks & Zoning: Structure Height Limits (2026)
Key Facts
- 1-story max height
- 24 ft
- 2-story max height
- 28 ft
- 1st floor wall plate max
- 15 ft
- 2nd floor wall plate max
- 22 ft
- R3 zone comparison
- 45 ft max (36 ft to wall plate)
Summary
Mountain View caps single-family homes in the R1 zone at 24 feet for a one-story house and 28 feet for a two-story house under City Code Sec. 36.10.25, with separate wall-plate limits of 15 feet for a first-floor wall and 22 feet for a second-floor wall.
Height limits Maximum building height for 1-story structure: 24 ft. Maximum building height for 2-story structure: 28 ft. Maximum 1st floor wall height at top of wall plate: 15 ft. Maximum 2nd floor wall height at top of wall plate: 22 ft.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 34 Update 4).
Full Breakdown
Sec. 36.10.25's height standards work as two separate limits layered on top of each other. The overall building height cap, 24 feet for a one-story house and 28 feet for a two-story house, controls the highest point of the structure. The wall-plate limits, 15 feet for the first floor and 22 feet for the second, separately cap how tall the vertical wall can rise before the roof begins, which keeps a two-story addition from reading as an oversized box even when it stays under the overall 28-foot ceiling.
Sec. 36.08.30 lists specific structures that these height limits don't reach at all: barns, silos, water towers, church spires, flagpoles, elevator penthouses, cooling towers and similar features can exceed the district maximum, along with rooftop screening that hides mechanical equipment, capped at an extra 10 feet beyond the maximum building height, though roof screens on R1 and R2 homes must still stay within the ordinary height limit. Sec. 36.08.35 also clarifies when a basement counts toward the height and floor area calculation: if less than half its height sits below the average grade within 100 feet of the building, it's treated as a full story. By comparison, the R3 multi-family zone allows up to 45 feet, 36 feet to the wall plate, under Sec. 36.10.70, showing how much taller Mountain View lets multi-family buildings rise on a similarly sized lot.
Violations & Fines
A house or addition built above the 24-foot (one-story) or 28-foot (two-story) height cap, or above the 15-foot and 22-foot wall-plate limits, does not qualify for a building permit under Sec. 36.10.25 unless it falls within one of the narrow exceptions in Sec. 36.08.30. Construction that exceeds these limits without such an exception, or without a variance, is a zoning violation the city can require be cut down or removed.
Frequently Asked Questions
How tall can a two-story house be in Mountain View's R1 zone?
Are chimneys and antennas exempt from Mountain View's height limits?
What is a wall-plate height limit and why does it matter?
Sources & Official References
Other rules in Mountain View
California rules heatmap·Compare Mountain View to another location·View the California building setbacks & zoning overview
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Structure Height Limits in Nearby Cities
How other cities in Santa Clara County handle structure height limits.