ADU vs. addition: which adds more value to your LA home?

The honest answer starts with a different question: value to whom? An addition adds space your family uses under one roof. An ADU adds a separate unit that can earn rent. Both raise resale value — they just do it through different math.

In our projects, additions typically return 60–80% of their cost at resale but transform daily life immediately. ADUs return less per square foot at sale — but a rented ADU in LA can produce $1,800–$3,200 a month, which no addition will ever do.

When the addition wins

Choose the addition when the problem is inside your own four walls: a missing primary suite, one bathroom for five people, a kitchen with no room to grow. Integrated space is worth more to your family per day than any rent check.

• You need bedrooms or baths connected to the house, not near it.
• Your lot is tight — additions can go up instead of out.
• You plan to stay 5+ years and live in the improvement.

When the ADU wins

Choose the ADU when the goal is income, flexibility, or housing another adult with their own front door — a parent, a returning graduate, a tenant. California’s streamlined ADU laws also make it the faster permit in most of LA.

An addition improves your house. An ADU adds a second asset to your lot.

The best answer is sometimes both, phased: a garage-conversion ADU first (fast, contained, income-producing), then an addition later, funded in part by the rent. We scope both paths in the same feasibility visit.