We have recently been the general contractor on a detached Accessory Dwelling Unit project in NE Portland. An ADU is normally smaller than the first house, but after an extensive plan application and review process, a larger new structure was approved for this oversize lot.
- 1700+ sq ft on two levels
- advanced framing practices
- slab on grade construction incorporating uncommon slab insulation details
- utilities under and through stem walls to minimize wall penetrations
- radiant heat in the slab and in a 1 1/2 ” poured gypsum underlayment on the second story
- distance from the street and lack of dedicated driveway requires a residential fire sprinkler system
- robust sheathing system comprised of 1/2″ plywood, tyvek house wrap, vertical tongue and groove and horizontally shiplapped 1″ xps foam insulating sheathing, fiber cement siding and “to the plywood” flashing above all penetrations
Our client is an owner of Kinesis, a marketing firm in Portland, and the project is being followed on his Portland building and design blog, Portland Built.
We won’t try to compete with the quality of his photo stream, but here are some photos from the project.
Ground Work
Framing
Roofing
Siding
Interior Framing and Rough In
