Backyard Office Builders Westminster
Customized Backyard Offices Tailored to Your Needs
Detached backyard offices must comply with key requirements:
- maximum size of 1200 square feet,
- height limit of 16 feet and one story,
- setbacks of 20 feet in front and 4 feet on sides/rear,
- and architectural design matching the main house.
Structures over 800 square feet must meet lot coverage limits (40-60% depending on zone) and may need open space requirements. The process involves design planning, pre-screening, construction plans, permit review, and inspections during building.
Backyard office construction westminster
Build Your Backyard Office in Westminster
Westminster Backyard Office Requirements You Should Know
Building a detached backyard office requires careful planning and compliance with multiple regulations.
- The structure must be set back 20 feet from the front property line and 4 feet from side/rear property lines, with a maximum height of 16 feet and one story.
- While parking requirements are typically one space per ADU, offices under 750 square feet may be exempt from parking requirements.
- The office's exterior design must match the primary residence in terms of materials, roof design, and color scheme.
- Construction cannot encroach on any utility easements, including roof eaves.
For offices exceeding 800 square feet, lot coverage restrictions apply (40% in R1-R3 zones, 50% in R4, 60% in R5). The approval process involves five key steps: initial design, pre-screening by city departments, preparation of construction plans, formal review, and building inspections.
Permits require various fees, including planning division processing, building division permits, and potentially park impact fees for larger structures. Each construction phase must be inspected within six months of the previous inspection.

Sources: Westminster California ADU and JADU Guide: https://www.westminster-ca.gov/home/showpublisheddocument/4114/637689600217500000
Westminster City website: https://www.westminster-ca.gov/departments/community-development/planning-division/accessory-dwelling-units
https://www.westminster-ca.gov/departments/community-development/planning-division/fees
ADUNewswire ADU Friendly Requirements - https://www.adunewswire.com/p/westminster-adu-friendly-requirements
Disclaimer: The information provide is for general informational purposes only and should not be relied upon as a substitute for consulting the official Municipal Code or seeking guidance from your local Community and Economic Development Department.
https://www.westminster-ca.gov/departments/community-development/planning-division/fees
ADUNewswire ADU Friendly Requirements - https://www.adunewswire.com/p/westminster-adu-friendly-requirements
Disclaimer: The information provide is for general informational purposes only and should not be relied upon as a substitute for consulting the official Municipal Code or seeking guidance from your local Community and Economic Development Department.