Building an ADU in Buena Park
In Buena Park, successful ADU projects begin with a clear understanding of zoning rules, site access, and how new construction integrates with the existing home. We help homeowners confirm feasibility early and create designs that balance functionality, compliance, and comfort.
Our design-build approach keeps the project moving efficiently from permits through construction and inspections. By coordinating each phase closely, we help reduce surprises and deliver a finished ADU that serves its intended purpose well.
ADU Services Available in Buena Park, CA
Our Buena Park ADU services focus on practical design, clear documentation, and coordinated execution. We help homeowners plan and build ADUs that integrate well with the existing home and meet local zoning and inspection standards.
✅ Detached & Attached ADUs
✅ Garage Conversion ADUs
✅ Junior ADUs (JADUs)
✅ ADU Planning & Design Coordination
✅ Permits, Plan Submittals & City Revisions
✅ Construction, Inspections & Final Completion
A free site evaluation provides clarity on feasibility and the most efficient path forward.
ADU Rules in Buena Park
ADUs allowed per lot
1 ADU (conversion, attached or detached) or 1 JADU; 1 JADU + 1 detached ADU allowed
Max detached ADU size
850 sq ft (up to 1 bedroom); 1,000 sq ft (2+ bedrooms)
Max attached ADU size
850 sq ft (up to 1 bedroom); 1,000 sq ft (2+ bedrooms)
Max JADU size
Up to 500 sq ft
Max height (detached)
16 ft (20 ft within a half-mile of major transit)
Two-story ADU
Attached ADUs can be two stories, up to 30 ft or your home's height
Setbacks
4 ft side and rear; second-story balconies need 5 ft
Space between buildings
No separate requirement in the city's ADU code
Parking
1 space (tandem allowed); none near transit, for conversions, or when a garage is demolished
Owner occupancy
Not required for an ADU; JADU requires the owner to live on site
Short-term rental (Airbnb)
30-day minimum; short-term rentals prohibited
Impact fees
Park fees waived under 750 sq ft; larger ADUs pay a proportionate fee
Pre-approved plans
We check for city-approved plans for your property
Permit review
Ministerial review; no hearing or discretionary review
Approval timeline
60 days after a complete application
Local insight
Buena Park allows attached ADUs up to two stories, with privacy rules for second-story windows and balconies. The ADU must also match your home's roofing, finishes, and colors.
How ADU Permitting Works in Buena Park
Buena Park reviews ADUs ministerially, with no public hearing or discretionary review. Your submittal needs a site plan, floor plan, demolition plan if applicable, and elevations, and each unit needs its address displayed as the building code requires. We design to the city’s design and privacy standards so plan check goes smoothly. If a city-approved plan fits your property, we’ll tell you up front.
Property feasibility review
Review zoning, lot conditions, access, utilities, and applicable ADU requirements.
ADU design and preparation
Prepare the site plan, architectural drawings, engineering, and required supporting documents.
City plan review and approvals
Submit the application, coordinate with city departments, and respond to plan-check corrections.
Permit issuance and construction
After approval and permit issuance, proceed with construction and required inspections.
FAQs About ADUs in Buena Park
Does my Buena Park ADU have to match my house?
Yes. The roofing, roof slope, exterior finish, colors, doors, and windows must match your main home. A converted garage door facing the street has to be replaced with features that match the house. Second-story windows and balconies must also meet the city’s privacy standards.
Can I use pre-approved plans in Buena Park?
Most Buena Park ADUs start with a custom design built around your lot, your goals, and the city’s design standards. If a city-approved plan fits your property, we’ll tell you up front.
What documents are required to submit an ADU permit application in Buena Park?
The city asks for a site plan, floor plan, elevations, and a demolition plan if anything is being removed. Units must meet current state and local building and fire codes, and each unit needs its address displayed as the building code requires. If you replace a detached garage, the demolition permit is reviewed and issued with the ADU. We prepare the full set.
Can I convert an existing garage into an ADU in Buena Park?
Yes. Conversions of existing space aren’t subject to the new-ADU size limits, and no parking is required when a garage is demolished for the ADU. A garage door facing the street must be replaced with features that match your house.
How can Lamarc Prime Builders help with ADU design, permitting, and construction in Buena Park?
We handle the whole project in one place. We start with a feasibility review of your lot, prepare the design, drawings, and engineering, submit to the City of Buena Park and respond to plan-check corrections, and then build your ADU through final inspections.
