Room Additions in Burbank That Shed Water
Burbank room additions detailed for water from grading to roof tie-in, with an attached ADU priced beside the addition so you can compare both.
Grading around a Burbank addition decides where storm water goes once it leaves the new roof. We set the finished soil to fall away from both the old and new foundation, and route downspouts to a splash area or a drain line well clear of the footings. The tie-in seam gets a self-adhered membrane under the roofing and step flashing up the wall. An attached ADU needs the same care, plus its own threshold detail at the entry door.
Weighing the two options in Burbank
Burbank's own building division reviews either option, and the city applies state ADU law to the attached unit. The difference is use. An addition becomes more of your house, with shared heating, water heater and kitchen. An attached ADU stands as its own home behind a fire-rated wall, with a separate entrance, kitchen and bath, and it may be rented. The rental option adds plumbing and a second kitchen, while the addition may run into floor area rules the ADU avoids. We price both for the lot.
Keeping water out of the new room
Inside the walls, the new framing sits on a sill plate with a gasket over a concrete foundation kept above finished grade. A drainable wrap behind the siding or stucco sends any water that gets past the cladding back out at a weep screed. Windows get a pan flashing at the sill before they go in. On the roof, the new valley where it meets the old slope is lined with metal over a membrane. A hose test on the windows before drywall shows us any leak while it is easy to fix.
Room Additions in Burbank: common questions
Choose the addition if the space will be lived in as part of your home, such as a bedroom suite or a larger family room. Choose an attached ADU if it will house a tenant or a relative with their own front door. On a Burbank lot, setbacks and floor area can favor one over the other, and we test both against the parcel before design.
The City of Burbank issues a single building permit for the room addition that also covers the structural, electrical, plumbing and mechanical work. Its planning staff look first at setbacks, height and the floor area the lot may hold. We draw the plans, coordinate any engineering, file the set and answer comments through to issuance.
It can, when the existing foundation and walls are strong enough for an upper floor and the zone permits the height. An engineer reads the footings and framing first, and we may add footings or shear walls as part of the job. A Burbank second story also needs a stair inside the house, which takes ground floor space we plan for early.
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