Quick answer: An in-law suite costs $60,000–$180,000+ in Los Angeles depending on scope, from converting existing space to a full near-ADU suite with its own kitchenette. APLA Construction (CA Lic #1136359) handles this throughout Greater Los Angeles.
An in-law suite is a private living space for aging parents, adult children, or guests, giving your family flexibility and multigenerational comfort under one roof. In Los Angeles, where housing is expensive and multigenerational living is increasingly common in neighborhoods like Glendale, Encino, and Culver City, an in-law suite adds both function and long-term value. APLA Construction is a licensed LA general contractor (CA Lic #1136359) that designs and builds in-law suites and attached living quarters.
An in-law suite in Los Angeles typically costs between $60,000 and $180,000, depending on whether you convert existing space, add on, or build a fully independent unit. A 2026 breakdown:
| Item | Typical Cost |
| Convert existing space (bedroom + bath + sitting area) | $60,000 to $100,000. |
| Attached addition with private entrance | $100,000 to $150,000. |
| Full suite with kitchenette (near-ADU) | $130,000 to $180,000+. |
Cost drivers include a private bathroom, a kitchenette, a separate entrance, accessibility features such as a curbless shower and wider doorways, and whether you convert or build new.
An in-law suite is typically attached and shares the home address, while an ADU is an independent, separately metered unit that can be legally rented. If you want rental flexibility later, we can design the suite to ADU standards. Compare with our ADU construction services and our ADU for aging parents guide.
An in-law suite addition requires a permit and must meet Title 24 energy standards. For aging family members, we build in accessibility: no-step entries, grab-bar blocking, and comfort-height fixtures. APLA manages plans, permits, and inspections. See our addition services.
From the Valley to the South Bay, LA families are choosing in-law suites to keep loved ones close while preserving everyone’s independence. We tailor each suite to your family, home, and lot.
An in-law suite is usually attached and part of the main home, while an ADU is a fully independent, separately metered unit that can be rented. We can design either.
A kitchenette is common. A full kitchen with a separate entrance may classify the space as an ADU under California law, which we can plan for.
Yes. Additions and conversions that add or reconfigure living space require permits. APLA handles the full permit process.
A conversion takes 6 to 10 weeks; an attached addition takes 3 to 5 months after permits.
APLA Construction designs and builds in-law suites across Los Angeles. Licensed CA Lic #1136359 — verify on CSLB. Call (818) 818-4419 or email info@aplaconstruction.com for a free estimate.