ADU Builder in Pomona, CA
Pomona has clear ADU guidelines, lot sizes that work for most homeowners, and a city-run pre-approved plan program that cuts approval time significantly. Apex Homes is a full-service ADU builder serving Pomona, handling feasibility, design, permits, and construction in-house. If you’re ready to build, we’ll tell you exactly what’s possible on your lot, for free.
ADU Regulations in Pomona
Pomona follows California’s state ADU laws but includes its own local standards that determine what can be built on single-family and multi-family lots.
Single-family lots (R-1):
- One detached or attached ADU + one Junior ADU (JADU) permitted
- ADU size: up to 1,000 sq ft on lots under 7,200 sq ft; up to 1,200 sq ft on lots 7,200 sq ft or larger
- JADUs capped at 500 sq ft, located within the primary dwelling
- Side and rear setbacks: 4 ft minimum; front setbacks follow zoning designation
- Detached ADUs: up to 18 ft height; attached ADUs: up to 25 ft height
- Detached ADU must be at least 10 ft from the primary residence and 6 ft from other accessory structures
Multi-family lots:
- Up to 2 detached ADUs permitted
- Conversion of existing non-livable spaces (garages, storage) also allowed
These standards are designed to provide flexibility while maintaining neighborhood character, making ADUs a practical and accessible option for many Pomona homeowners.
Apex Homes handles zoning verification, setback calculations, and code compliance — included in your free feasibility study.
Build Your ADU in Pomona
Start with ParcelZ. Enter your address and get instant eligibility, your buildable area, and matching floor plans. Free, no signup. Then our team takes it from there.
Pomona ADU Permitting Process
To obtain an ADU permit in Pomona, homeowners should first confirm their property’s zoning and review the city’s ADU standards.
Free Feasibility Study
Apex checks your zoning, lot size, setbacks, and utility connections — at no cost, before you commit to anything.
Select a Pre-Approved Plan
Choose from Pomona’s pre-approved ADU layouts. No design review required — permits move faster and cost less.
Apex Submits Your Permit Package
We prepare and submit all site-specific documents (site plan, floor plans, elevations, structural details, Title 24) to the Pomona Permit Center.
Permit Issued
Typically 2–4 months. Pomona issues permits digitally, allowing construction to begin promptly. Choosing a pre-approved plan reduces review time significantly.
Construction & Inspections
Apex builds your ADU and manages all city inspections. We deliver a finished, move-in ready unit — typically within 5 months of your feasibility study.
Pre-Approved ADU Plans in Pomona
Pomona offers several pre-approved ADU designs that make it easier and more affordable for homeowners to build. These plans have already been reviewed and approved by the city for compliance with building codes and zoning regulations. Homeowners only need to confirm site-specific details, such as utility connections and property setbacks, before proceeding. Pre-approved plans help reduce architectural and engineering costs while ensuring faster permit approval.
To learn more about the city’s pre-approved ADU options, homeowners can contact Pomona’s Building and Safety Division or work with Apex Homes to select the best fit for their lot and goals.
Does a plan fit your lot?
Use ParcelZ to instantly see which of these plans fit your property in Pomona — free, no signup.
Why Build an ADU in Pomona?
Pomona’s strong housing demand and central location make it an excellent place to build an ADU. Homeowners can create additional living space that generates steady rental income and boosts long-term property value.
ADUs in Pomona also offer flexibility for families who want to live closer together. Whether for parents, adult children, or guests, these units provide privacy and independence while staying connected.
With clear city guidelines and a simple permitting process, building an ADU in Pomona is easier than ever. Apex Homes builds ADUs throughout the area and can help you get started with a free consultation to explore your property’s potential.
Have questions? Contact Apex Homes Today
Our team knows Pomona’s zoning, permits, and pricing inside out. Call us for a free, no-pressure conversation about your property. We’ll tell you exactly what’s possible.