Building and remodeling in Casas Adobes
Casas Adobes is the established community on Tucson's north side, south and southwest of Oro Valley and west of the Catalina Foothills. It grew out of Sam Nanini's subdivisions from the mid-1950s and the Casas Adobes Plaza at Oracle and Ina, often described as Tucson's first suburb. Tohono Chul, the Westward Look and the Omni Tucson National are all close by. Most homes here have Tucson mailing addresses in the 85704, 85741 and 85742 ZIP codes.
That history shapes the work. The area has one of the highest concentrations of mid-century modern homes in the Tucson region, plenty of ranch houses built with adobe brick, and a few older estates that still keep citrus planted nearly a century ago. Owners here usually want to keep the character of the house and fix what decades of sun have worn out.
Who issues permits in Casas Adobes
Despite the Tucson address, Casas Adobes is not part of the City of Tucson. Residents voted to incorporate in 1997, but the courts struck down the state law that allowed it, and a second vote in 2001 failed. It remains unincorporated Pima County, so building permits come from Pima County Development Services.
That also means the City of Tucson's newer casita rules don't apply. In the county, a detached casita is permitted as a guest house: one per lot, a minimum lot size of 4,000 sq ft, a kitchen is allowed, it must share the main home's driveway and it can't have its own utility meter. Oro Valley and Marana border the community, so near the edges we confirm your parcel on the Pima County Assessor site before anything is drawn.
What older Casas Adobes homes usually need
- Flat and low-slope roofs. Mid-century designs often use flat or low-pitch roofs with parapets. Decades of UV break down coatings and underlayment, and leaks tend to start at parapet corners and scuppers. See our roofing and flat roof repair pages.
- Stucco over block and adobe. Cracks around windows, at old additions and where walls meet the roof are common. Matching an older texture takes a careful hand, and our own crew does the stucco work.
- Beams, headers and owner-built additions. Exposed beams and earlier additions sometimes hide rot, termite damage or undersized framing. Our structural repair and framing crews fix it properly rather than patching over it.
- Closed-in kitchens and small baths. Original layouts often wall the kitchen off from the living room. A remodel can open it up while keeping the lines that make the house worth keeping.
Adding space on an established lot
Lots in Casas Adobes are often big enough for a guest house or an addition, but mature trees, existing patios and the route of older sewer or septic lines all affect where it can go. If your home is on septic, adding a bedroom can mean the system needs to be checked or enlarged first under Pima County's onsite wastewater rules. Lots near the Cañada del Oro or smaller washes may also need a floodplain use permit from the Regional Flood Control District before construction starts.
On a mid-century house, the best additions look like they were always there: the same roof pitch, fascia depth, window proportions and stucco texture. Because we do framing, stucco and roofing in house, we can carry those details through. Our additions and casitas page and home addition cost guide cover the options and what moves the price.
Before you buy plans: confirm the jurisdiction, the septic or sewer situation and any wash on or near the lot. Those three things decide where a guest house or addition can sit.
One licensed team for the whole job
AZ Atlas Builder Group is a family-owned, licensed general contractor (AZ ROC #344537) based in Tucson. We walk the site, give you a written estimate, prepare the county permit submittal and stay your one point of contact through the final inspection. You can check our license any time on the Arizona Registrar of Contractors site.