How Much Does It Cost to Build an Accessory Dwelling Unit in Los Angeles?
Do you need more space at home? A lot of people in Los Angeles are adding Accessory Dwelling Units (ADUs). These are small houses you build on your property. They’re great for family, visitors, or making extra money by renting them out. But how much do they cost?
What Is an ADU?
An ADU is a small house that you build on your land, usually in the backyard or over your garage. Some people call it a granny flat, guest house, or in-law suite. It has its own entrance, kitchen, bathroom, and living space.
Why Build an ADU in Los Angeles?
Houses in Los Angeles are expensive. Many families want more room but can’t afford to move. Building an ADU gives you space for an older parent, a child who moved back house, visitors, or someone who rents it. It also makes your house worth more.
How Much Does an ADU Cost?
The price to build an ADU in Los Angeles is usually between $150,000 and $400,000. It depends on the type of ADU you want, the size, and the materials you choose.
A garage conversion is often the cheapest. You can expect to pay around $100,000 to $160,000 if your garage is in good shape. A detached ADU, which is a brand-new small house in your yard, costs the most—about $200,000 to $400,000. An attached ADU, which connects to your house, costs around $150,000 to $250,000. If you have a basement, a basement ADU can cost $120,000 to $180,000.
What Makes ADUs Cost More or Less?
There are a few things that change the cost.
The size of the ADU matters. A bigger ADU costs more. Also, if the design is simple, the cost will be lower. If you want a special layout or fancy materials, it will cost more.
You also need permits from the city. These can cost $3,000 to $10,000. Sometimes, you’ll need to add new plumbing, water, or electrical lines. That adds to the price too.
Another big cost is materials and labor. Building supplies and worker pay are high in Los Angeles. But if you hire a good builder, they can help you stay on budget and avoid problems.
How Long Does It Take to Build?
Most ADUs take 6 to 12 months to finish. Getting the design ready and getting permits usually takes 2 to 4 months. Building the ADU takes about 4 to 8 months.
If you work with someone who knows the rules and process, it can go faster.
Can You Save Money?
Yes, there are ways to save.
If you already have a garage or extra room, turning it into an ADU will cost less than building a new one. You can also use a pre-approved plan from the city. These are plans that the city already said yes to, so you don’t have to wait long to get started.
Also, if you work with a builder who knows how to build ADUs, they can give you smart ideas and help you pick materials that cost less. Try not to change the plan once building starts—changes can cost more and slow things down.
Is It Worth It?
Yes! An accessory dwelling unit in Los Angeles can help you in many ways. You can rent it out and make money. You can use it for your family. And when it’s time to sell, your house may be worth more.
People like ADUs because they offer privacy and comfort. Older family members can live close by but still have their own space. Grown-up kids can stay while saving money. Or you can welcome renters and earn extra income.
Want to Build One?
Building an accessory dwelling unit in Los Angeles costs money, but it can be a great choice. It gives you more space, more value, and more options for your house.
By learning about the cost of a granny flat and planning carefully, you can make smart choices and enjoy the results for years to come. Whether you need room for family or want to rent it out, an ADU is a smart way to grow your house.
Snow Construction, we help people all over Los Angeles build ADU granny flats that fit their needs and budget. We can help from start to finish—design, permits, and building.
Contact us today to get started with a free consultation. Let’s turn your idea into real space.
Q1: What is the average cost to build an ADU in Los Angeles?
The average cost to build an accessory dwelling unit in Los Angeles ranges from $150,000 to $400,000, depending on the type, size, and materials used.
Q2: Can I build a granny flat over my garage in Los Angeles?
Yes, you can build a 2-story ADU over your garage in Los Angeles. It’s a smart way to add living space without taking up extra yard area.