Buying a home that already has an ADU is a different process than building one yourself, and the diligence involved is easy to underestimate.
Permit Verification Comes Before Anything Else
The first thing I check on any home with an ADU for sale in LA is whether the structure was permitted as an ADU, or whether it’s an unpermitted conversion being marketed as one. An unpermitted unit can affect financing, insurance, and your ability to legally rent it out, so this isn’t a detail to skip, it’s the foundation of the whole evaluation.
Income Potential Needs a Realistic Look, Not a Listing Claim
Sellers sometimes advertise a specific rental number the ADU could earn, but that figure should be checked against actual comparable rentals in the immediate area, not taken at face value. I encourage buyers to research current rents for similar units nearby before factoring any income into their offer or their financing plan.
Condition of the ADU Deserves Its Own Inspection
An ADU is often older construction, a converted garage, or a newer prefab unit, and each comes with different inspection priorities. I recommend a separate walkthrough focused specifically on the ADU’s electrical, plumbing, and any shared utility connections with the main house, since these units sometimes share a water heater or electrical panel in ways that affect both properties.
Separate Utilities Change the Math
Whether the ADU has its own utility meters or shares them with the main house affects both your ability to rent it independently and your monthly holding costs. This is one of the first questions I ask on behalf of buyers considering an ADU purchase for rental income.
Loan Programs Treat ADU Income Differently
Some lenders will count a portion of projected ADU rental income toward loan qualification, others won’t, and the rules vary by loan type. Buyers relying on ADU income to qualify for financing should confirm this with their lender early, before they’re deep into a purchase contract.
If you’re looking at a home with an ADU already built, get in touch and we can go through what to verify before you make an offer.