Building Safety in Mountain View, CA (2026)
10 verified building safety rules for Mountain View, California, sourced directly from the municipal code and official government pages.
Verified from official government sources
Lead Paint
Lead-based paint disturbance in Mountain View pre-1978 housing must follow EPA RRP rules and California lead-safe work practices, with disclosure required for rentals and sales.
Mountain View Lead Paint Rules
Some RestrictionsCalifornia Health and Safety Code Section 17920.10
17920.10. (a) Any building or portion thereof including any dwelling unit, guestroom, or suite of rooms, or portion thereof, or the premises on which it is located, is deemed to be in violation of this part as to any portion that contains lead hazards. For purposes of this part, "lead hazards" means deteriorated lead-based paint, lead-contaminated dust, lead-contaminated soil, or disturbing lea...
Fire Sprinkler Requirements
Every new one- and two-family dwelling in Mountain View must have an automatic fire sprinkler system installed, under City Code Sec. 8.40.15. Additions that push an existing non-sprinklered home's square footage up by 100 percent, or over a cumulative 4,100 square feet, trigger a retrofit requirement, though most accessory dwelling units are exempt.
Mountain View Residential Fire Sprinkler Rule
Heavy RestrictionsMountain View, CA, City Code Sec. 8.40.15 (amending Cal. Residential Code § R309.2)
R309.2 One- and two-family dwellings automatic fire sprinkler systems. An automatic fire sprinkler system shall be installed in one- and two-family dwellings. Exceptions: 1.An automatic fire sprinkler system shall not be required for alterations to existing buildings that are not already provided with a sprinkler system.2.An accessory dwelling unit (ADU), provided that all of the following are ...
Childcare Center Rules
Mountain View regulates where and how child-care centers can locate under City Code Section 36.28.20. Standalone centers need a conditional use permit, must keep outdoor play areas behind a six-foot wood or masonry fence, cannot sit next to a business handling hazardous materials, and cannot border more than one residential property.
Mountain View Child Care Facility Siting Rules
Some RestrictionsMountain View, CA, City Code § 36.28.20 (Child-Care Facilities)
This Section establishes standards for city review of child-care facilities, in conformance with state law, including the limitations on the city's authority to regulate these facilities. ... Licensing by the Department of Social Services is required for all child-care facilities. ... 1.Spacing/concentration. No residential property shall be bordered on more than one (1) side by a child-care fa...
Anti-Mansionization
Mountain View reins in oversized additions to R1 homes with a sliding floor-area-ratio formula, larger second-story side setbacks than the ground floor, and a 150-square-foot cap on second-story decks and balconies, all under City Code Sec. 36.10.25. The bigger the lot, the lower the FAR percentage, and second stories must step back further than first stories.
Mountain View R1 Mansionization Limits
Some RestrictionsMountain View, CA, City Code Sec. 36.10.25 (R1 Zone Development Standards - Floor Area Ratio and Second-Story Setbacks/Decks)
Floor area ratio The maximum base FAR allowed shall be based on lot area and calculated using the following formula: FAR = 0.50 - (0.00001 x Lot Area). ... 0.45 for lots of 5,000 sq. ft. or less; Use formula above for lots between 5,001 and 9,999 sq. ft.; ... 0.40 for lots of 10,000 sq. ft. or greater. Sides (2nd-story) For lots less than 5,000 sq. ft. or less than 40 ft. wide: 5 ft. minimum ea...
Green Building Code
Mountain View adopts the 2025 California Green Building Standards Code (CALGreen) by reference as the Mountain View Green Building Code under City Code Sec. 8.62.10, with local amendments controlling within city limits. The code applies mandatory measures, heat pump systems, rooftop solar, EV charging infrastructure and bird-safe glazing, to every newly constructed building, addition and alteration, enforced by the Building Division of the Community Development Department.
Mountain View Green Building Code Rules
Some RestrictionsMountain View, CA, City Code Sec. 8.62.10 (Adoption of the California Green Building Standards Code), Art. XII, Div. 1
The "California Green Building Standards Code, 2025 Edition," also referred to as "CALGreen," in its entirety, as published by the International Code Council, Inc., with the amendments adopted by the State Building Standards Commission in the California Code of Regulations (CCR) Title 24, Part 11, inclusive of Appendix A4 Sections A4.106.8.1 and A4.204.1 through A4.204.1.1, and Appendix A5 Sect...
Carbon Monoxide Detectors
Mountain View requires a smoke/carbon monoxide detector in every recreational vehicle enrolled in the city's overnight Safe Parking program for people living in their vehicles. The rule sits alongside bans on open flames, outdoor cooking, and unsecured propane at safe parking sites.
Mountain View Safe Parking CO Detector Rule
Some RestrictionsMountain View, CA, City Code Sec. 19.108 (Safe Parking Requirements)
Safe parking programs shall comply with the following: ... c.Fire extinguishers (minimum size of 2-A:10-B:C) shall be mounted and visibly accessible within a seventy-five (75) foot distance of any occupied area. ... g.A smoke/carbon monoxide detector is required for RVs.
Building Permits
A Mountain View building permit is not valid until the fees set by the city's master fee schedule are paid, under City Code Sec. 8.28.30. The same rule applies to permit amendments: no added work is authorized until the extra fee for that amendment is paid, and a separate fee is charged for every permit the project needs.
Mountain View Building Permit Validity Rules
Some RestrictionsMountain View, CA, City Code Sec. 8.28.30 (Fees; amending Cal. Building Code §§ 109.1, 109.2)
109.1 Payment of fees. A permit shall not be valid until the fees prescribed by law, city code, or the city master fee schedule have been paid, nor shall an amendment to a permit be released until the additional fee, if any has been paid. 109.2 Schedule of permit fees. Where a permit is required, a fee for each permit shall be paid as required, in accordance with the city code and the city's m...
Electrical Permits
Mountain View enforces the 2023 National Electrical Code as amended into the 2025 California Electrical Code, City Code Sec. 8.42.10, as the city's own Electrical Code. A one-family dwelling's service disconnect must be rated at least 100 amperes on a minimum 200-amp panel under the city's local amendment at Sec. 8.44.10.
Mountain View Adopted Electrical Code Rules
Some RestrictionsMountain View, CA, City Code Sec. 8.42.10 (Adoption of NEC/California Electrical Code); Sec. 8.44.10(C) (Service Panel Sizing)
The "National Electrical Code, 2023 Edition" in its entirety, as published by the National Fire Protection Association (NPFA), with the amendments adopted by the State Building Standards Commission in the California Code of Regulations (CCR) Title 24, Part 3, known as the "California Electrical Code, 2025 Edition," is hereby adopted by reference, with changes and modifications as hereinafter se...
Plumbing Permits
Mountain View enforces the 2024 Uniform Plumbing Code as amended into the 2025 California Plumbing Code, under City Code Sec. 8.48.10, as the city's own Plumbing Code. The adoption covers Appendices A, D and I, and the building division of the community development department keeps a public copy on file for inspection.
Mountain View Adopted Plumbing Code Rules
Some RestrictionsMountain View, CA, City Code Sec. 8.48.10 (Adoption of Uniform Plumbing Code/California Plumbing Code)
The "Uniform Plumbing Code, 2024 Edition" in its entirety, as published by the International Association of Plumbing and Mechanical Officials, with the amendments adopted by the State Building Standards Commission in the California Code of Regulations (CCR) Title 24, Part 5, known as the "California Plumbing Code, 2025 Edition," including Appendices A, D and I, is hereby adopted by reference, w...
Building Inspections
Mountain View requires a footing and foundation inspection before any concrete pour, and a final inspection before a project can get its certificate of occupancy, under City Code Sec. 8.28.45 and Sec. 8.28.50. A signed job card from the building official, issued after a violation-free final inspection, serves as the certificate of occupancy.
Mountain View Building Inspection Requirements
Some RestrictionsMountain View, CA, City Code Sec. 8.28.45 (Footing and Foundation Inspection); Sec. 8.28.50 (Certificate of Occupancy)
110.3.1 Footing and foundation inspection. Footing and foundation inspections shall be made after excavations for footings are complete and any required reinforcing steel is in place. For concrete foundations, any required forms shall be in place prior to inspection. Materials for the foundation shall be on the job, except where concrete is ready mixed in accordance with ASTM C94, the concrete ...
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