ADUs and additions, Sherman Oaks, Los Angeles County
Attached ADUs in Sherman Oaks
Where the new roof meets the old one, flashing and framing decide how well the unit holds up through sun and storms.
For an attached ADU in Sherman Oaks, the seam where the new roof and wall meet the existing house deserves the most care. An inland valley lot sends hard sun across that joint for months and the odd heavy storm down it in a single night, and materials of different ages move at different rates. We plan the tie-in before comparing it with a detached unit, a garage conversion or a JADU on the same lot.
Where the old roof meets the new
A tie-in starts in the attic of the main house. We check the rafters or trusses that the new framing will bear against, look for past leaks, and confirm the existing roof covering can be matched or must be replaced across the joint. Step flashing, a cricket where water could pool, and a continuous underlayment carry rain past the seam. The shared wall needs a fire separation between the two dwellings, and the insulation has to close the gap so heat does not slip through the connection.
LADBS review and the other options
Plan check for Sherman Oaks happens at LADBS, the City of Los Angeles building department, which also inspects the work and folds zoning clearances into its review. If the attic or wall shows damage that makes a tie-in costly, a detached unit or a garage conversion can avoid touching the main roof at all. A JADU stays inside the existing footprint. We put the options next to each other with their utility routes for sewer, power and water, then carry the chosen design through inspections to final approval.
What we build in Sherman Oaks
Second units and room additions lead, with the rest of our services available on the same lot.
Cities close by
Planning a unit in Sherman Oaks?
Send the address. We check which ADU types the lot allows and reply with the next step.