ADU Builders in Long Beach, CA
Looking for an ADU builder in Long Beach? ADUs, garage conversions, and backyard cottages can add living space, rental income, or room for family. This page lists local ADU contractors and summarizes basic cost and permit considerations for Long Beach homeowners.
Long Beach homeowners use ADUs to add rental units in a coastal LA-area market where demand is strong, and the city's older housing stock makes garage conversions especially common.
Featured ADU contractors in Long Beach
Serves Long Beach and surrounding areas
Garage conversions, New construction ADUs, Remodeling
Serves Long Beach, Orange County, and greater Los Angeles County
Design-build, Garage conversions, Basement conversions
Serves Long Beach with additional service across Los Angeles County, including Pasadena and Altadena
Custom design, Garage conversions, Feasibility analysis
Serves Long Beach and coastal Orange County
Garage conversions, ADA-compliant design, Remodeling
Serves Long Beach and surrounding Orange County cities including Huntington Beach, Anaheim, and Garden Grove
Garage conversions, Custom ADU design, Permit acquisition
Serves Los Angeles, Orange, San Diego, Riverside, San Bernardino, and Ventura counties, including Los Angeles, Long Beach, and Pasadena
Design-build, Financing coordination, Prefab modular
Serves Los Angeles, including Pasadena, Glendale, and Long Beach
Design-build, Pre-approved plans, Garage conversions
Serves Pasadena and a wide swath of LA County including Glendale, Long Beach, and the San Fernando Valley
Turnkey ADU construction, Permit acquisition
Serves Long Beach
Engineering design, Custom construction, Permitting
Serves Long Beach and Orange County
Design-build, Garage conversions, Junior ADUs
Serves Long Beach and coastal Southern California
Design-build, Custom remodeling
ADU costs in Long Beach
General estimated ranges:
- Garage conversion: $100,000–$180,000
- Detached ADU: $170,000–$380,000
- Design/permitting: varies by project
Estimates only — actual costs vary by site, size, and finishes. See the full Long Beach ADU cost guide.
Common ADU project types
- Detached ADU
- Garage conversion — see Long Beach garage conversion contractors
- Junior ADU
- Basement conversion
- Prefab ADU
ADU permits in Long Beach
Long Beach approves code-compliant ADUs ministerially under state law. Detached ADUs up to 800 sq ft with 4 ft setbacks qualify for streamlined review; coastal-zone properties may need an additional coastal development review.
Expect the state-mandated 60-day review for complete applications; coastal-zone parcels can add time. Design through permit typically runs 2–4 months for non-coastal lots.
Questions to ask an ADU builder
- Have you completed ADUs in this city?
- Can you help with design and permits?
- Do you handle utility connections?
- Can you show recent examples?
- Are you licensed and insured?
FAQ
How much does an ADU cost in Long Beach?
Most detached ADUs in Long Beach land in the $170,000–$380,000 range all-in, depending on size, finishes, and site conditions. Garage conversions typically run $100,000–$180,000. These are editorial estimates — get multiple quotes for your specific property.
Do I need a permit to build an ADU in Long Beach?
Yes. Every ADU and garage conversion in Long Beach requires building permits. The good news: California law requires ministerial (no public hearing) approval for code-compliant ADUs. Expect the state-mandated 60-day review for complete applications; coastal-zone parcels can add time. Design through permit typically runs 2–4 months for non-coastal lots.
How long does it take to build an ADU in Long Beach?
Plan for 3–6 months of design and permitting, then 4–8 months of construction for a detached ADU. Garage conversions are usually faster — often 3–5 months of construction once permits are issued.
Can I rent out my ADU in Long Beach?
Yes — long-term rentals (30+ days) of ADUs are allowed statewide in California. Short-term rental rules vary by city, so check Long Beach's short-term rental ordinance before planning Airbnb-style use.
Does an ADU add value to my home in Long Beach?
Generally yes. Appraisals vary, but a permitted ADU adds livable square footage and rental income potential, which supports resale value. Note that ADUs also increase your property tax assessment on the new construction value.
What's the difference between an ADU and a JADU?
A Junior ADU (JADU) is a unit of up to 500 sq ft created within the existing home, with an efficiency kitchen and shared or separate bath. A standard ADU is a full independent dwelling — attached, detached, or converted from a garage. Many Long Beach lots qualify for one of each.
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