Garage Conversion & ADUs

A garage conversion or Accessory Dwelling Unit (ADU) is the process of transforming a garage into a livable space. This could include converting it into a guest house, rental unit, home office, or extra living area. ADUs often feature their own kitchen, bathroom, and separate entrance.

Our ADUs and garage conversions start at $120,000 in Los Angeles County and Orange County. That covers design, permitting and construction as one project. A garage conversion is usually the most affordable route because it reuses the slab, walls and roof, while a detached, ground-up ADU costs more because it needs its own foundation, utilities and structure. For context, the 2025 Cost vs. Value report puts the average ADU project in Los Angeles at $178,536. The final number depends on your lot, the city you are in and the finish level you choose. Our guide to the cost of building an ADU in Los Angeles walks through every line item, and our LA ADU permit guide covers what the city will ask for. A free in-home consultation gives you a written scope and estimate before any work starts.

Yes, most garage conversions require permits to comply with local zoning laws, building codes, and safety standards. The permitting process ensures the work meets legal requirements. Working with an experienced contractor can help navigate these permits and ensure the conversion is up to code.

The timeline for a garage conversion into an ADU depends on the scope of the project. On average, it can take anywhere from 3 to 6 months, depending on the complexity of the conversion and the permitting process. More detailed renovations may take longer, so it’s important to work with a contractor for an accurate timeline.

Yes, you can often rent out your converted garage as an ADU, providing additional income. However, local zoning laws, parking regulations, and utility requirements may apply. It’s essential to check with local authorities to ensure your ADU meets all rental guidelines and requirements.