Room Additions in Tarzana, Starting at the Roof Tie-In
Tarzana room additions scoped after we count the roofing layers where the new roof ties in, with an attached ADU priced next to the addition.
Several layers of old shingles may sit under the roof a Tarzana addition has to join, and finding them changes the plan for the whole tie-in. New roofing cannot be woven cleanly into a stacked roof, and the extra weight may already be bearing down on the old rafters. When we lift a shingle at the eave and count the layers, the scope can grow to a partial tear-off and new sheathing where the two roofs meet.
What the tie-in needs
A tight joint between old and new roofs depends on solid sheathing on both sides. Once the old layers are stripped back to the rafters along the connection, soft decking is cut out and replaced, then a self-adhered membrane runs through the valley. Metal valley flashing goes over that, and the new shingles are woven or cut in to line up with the existing courses. Where the old roof is near the end of its life, roofing the whole house at once can cost less overall, and the quote can show both paths.
Addition or attached ADU in Tarzana
Tarzana is permitted through LADBS, and plan check reads an addition and an attached ADU under different rules. An addition adds space to the house you live in and is weighed against the floor area cap for the lot. An attached ADU, governed by state ADU law, becomes a separate home with its own entry, kitchen and bath. Both need the same roof tie-in work if they share a wall with the house. We sketch both footprints, list what each requires and price whichever fits your goal and the lot.
Room Additions in Tarzana: common questions
Size rules pull in different directions. An addition grows only as far as the zone's floor area limit allows. An attached ADU follows state size allowances tied to the unit and the main house. On a Tarzana lot close to its cap, the ADU may be the one that fits, so we measure that before choosing.
LADBS permits the work. If the roof tie-in grows into a full reroof, that scope can be added to the same application. Our team prepares the architectural and structural sheets with the engineer's calculations and handles the submittal and the replies for the Tarzana project.
When the existing walls and foundation can carry it and zoning allows the height, it can. The engineer checks the footings, framing and roof structure, and calls for reinforcement where needed. A second story in Tarzana replaces part of the old roof outright, so the layered roofing question gets answered along the way.
Room Additions in other cities
More we build in Tarzana
Start your room additions in Tarzana
Tell us about the property and the project. We reply with what it involves and how we would price it.