ADU Construction in Glendale
Backyard ADUs and garage conversions in Glendale, with roof drainage settled before framing and a wildfire-rated exterior shell.
Water leaves a backyard unit's roof at an eave, a scupper or a gutter outlet, and on a Glendale lot the choice among them is made before the walls are drawn. The roof also faces drifting embers, so its covering and vents are specified in the same sitting. Whether the project is a detached unit, an addition or a garage conversion, the shell goes up wildfire-rated.
Where the roof sheds
A gutter collects water along an eave and hands it to a downspout, and each downspout needs somewhere to land. A flat or low-slope roof behind a parapet drains through a scupper, so the position of that outlet is fixed before framing starts. A shed roof sends all of its water to one edge, a gable splits it between opposite eaves, and a hip roof releases it on every side. The side that receives the flow should never face the neighbor's fence, and outlets sit where a person with a ladder can clear them.
Where the water lands
Below each outlet, a splash pad, a planter, a swale or a dry well takes the flow, and which one fits depends on how the yard is graded. If the lot slopes toward the unit, a drain line is run around the foundation. On a flat lot, the aim is to move water a few feet from the slab and let the soil absorb it. Roof water that soaks the footing area keeps causing trouble long after the build, so the drainage plan is drawn at the same time as the unit.
ADU Construction in Glendale: common questions
A lot the fire map marks as a hazard zone must follow the wildfire exterior rules, and the Glendale building department can confirm the mapping for the address. The drawings carry fire-resistant walls, mesh on every vent and tempered glass in any case, so a lot off the map still gets a rated shell.
A Glendale set with a parapet roof or an eave drain leans on the wall drawings, where the roof edge is detailed, and on the site plan for the direction of drainage. The full set is prepared for a qualifying one-story unit, and a bigger design is scoped separately.
Possibly, depending on the lot and the path the rebuild takes through the city. If both projects go ahead together, the unit's utilities and the house's can come off one trench. A single conversation with the building department up front shows whether one submittal can serve both or two are needed.
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Plan your project in Glendale
Tell us about the house and the adu construction work. We reply about a walk-through and a written scope.

