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More house, without moving

Home Additions in Oro Valley, AZ

Additions matched to the original build so closely that visitors never find the seam.

  • 60+ Years Family-Owned
  • Licensed & Insured
  • 300+ Families Served
  • 5-Year Warranty

Quality Remodeling Services in Oro Valley

Craig and Mandy liked their quirky Oro Valley house. The problem was that it had two bedrooms, a toddler, another baby on the way, and essentially one room with a door that closed, which made working from home a daily negotiation. They did not want a different house. They wanted more of this one.

We built them a two-bedroom, one-bath addition on the existing Oro Valley footprint. The brick and siding were sourced to match what was already standing, a four-foot overhang gave the new section a porch-like feel that follows the original roofline, and we tested stains until the new flooring met the old with no visible transition. The kids got a seven-foot shared bathroom in penny tile and bedrooms with deep window sills matching the home’s original detailing, angled east for the morning light.

Craig’s summary afterward was that each phase was efficient and had minimal impact on their daily routines. The whole project is on our featured projects page, including what it cost and why the final number moved.

Matching an addition to an existing Oro Valley home is harder than building new, and anyone who says otherwise has not done many. Stucco and brick drift in color as they weather. Roof pitch and fascia details vary by builder and by decade. Window lines get discontinued. Making an addition disappear into the original means solving all of that on purpose rather than hoping it reads close enough from the curb.

Most Oro Valley additions fall into a few shapes. A primary suite for a couple whose needs changed. Two bedrooms and a bath for a growing family or for grandchildren who now stay for weeks. A casita or accessory building for a parent moving in. Those are the projects we build here again and again.

We are a design-build firm, so the drawing and the build come from one team. On an addition that matters more than on any other project type, because the structural work, the roof tie-in, and the finish match all have to agree with each other and with a house nobody drew plans for in 1988.

Frei has been doing this in Southern Arizona since 1962, three generations of the same family, licensed under AZ ROC 253812. Our second office is on North Oracle Road, minutes from most of the neighborhoods we build in, from Rancho Vistoso down toward Naranja Park and out past Honey Bee Canyon Park.

You get CompanyCam photos every day, which on an addition is genuinely useful, because the interesting part is the framing and the tie-in that ends up buried behind finish work. The craftsmanship warranty runs five years with a check-in at six months, and we hold the schedule 98 percent of the time.

One honest note. We do not build basements. They are not standard construction in Southern Arizona. Additions here go out, or where the lot demands it, up.

Walk us through your home and what you need more of. We will tell you what the house can take.

Our Oro Valley Remodeling Services

Whole Home Remodeling

When one room no longer fits the way you live, a whole-home remodel brings the entire house back into rhythm. We design and build it under one roof, so your kitchen, baths, and living spaces finally feel like one home again.

Kitchen Remodeling

After years of cooking, gathering, and running the household, a kitchen earns the right to be reimagined. We craft kitchens that work the way your family actually moves, with honest pricing and daily photo updates so nothing about the process feels like a mystery.

Bathroom Remodeling

Step into a bathroom built for the way you start and end each day. We blend comfort and function, from heated tile floors to frameless glass, and treat the space like the private retreat it should be.

Home Additions

Sometimes the home you love just needs more of itself. We design and build additions that match your existing house so seamlessly that guests cannot tell where the original ends and the new begins.

Remodeling Design

Every great remodel starts with a plan you can see before a single wall moves. Our design-build approach keeps design and construction on one team, which means fewer change orders, fewer surprises, and a finished space that matches what you pictured.

See More of Our Work

See Our Featured Projects →

Why Oro Valley Homeowners Choose Us

Three Generations Since 1962

Frei has been a family-owned, design-build remodeler in Southern Arizona for more than 60 years, passed from grandfather to dad to Joe. That continuity shows up in how we treat your home and your timeline.

Design and Build Under One Roof

Because we design and build with one team, there are fewer change orders and fewer surprises. You also get daily CompanyCam photo updates, so you always know exactly what is happening at your home.

Backed by a 5-Year Warranty

We stand behind our craftsmanship with a 5-year warranty and a 6-month check-in to catch anything that needs attention. Our 98% on-time completion rate means we respect your schedule as much as your home.

Serving Oro Valley and Surrounding Areas

Proudly serving Oro Valley, AZ and the wider 30 mile radius.

Find Frei Remodel and Design Near Oro Valley

View map of Oro Valley

Our History in Oro Valley

Oro Valley incorporated in 1974 with a few hundred residents and grew into a town of more than forty thousand. Almost all of that growth happened as tract and semi-custom subdivisions, built out in waves as each parcel came online. Rancho Vistoso alone carries dozens of separate subdivisions, each with its own builder, its own era, and its own set of standard details.

For an addition, that history is the whole job. A house in one subdivision may sit on a generous lot with room to extend in three directions. A house two streets over, built by a different company five years later, may be pushed to its setbacks with a drainage path running exactly where you would want to build. We survey the parcel and the existing structure before we draw, because in this town the answer genuinely changes house by house.

Lot conditions add a second layer. Oro Valley runs up against the Santa Catalina foothills, and grade, rock, and wash proximity all shape what an addition costs to build and where it can sit. Homes near James D. Kriegh Park sit on comparatively flat ground. Parcels closer to the mountain do not. We would rather find that out with a survey than with an excavator.

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Frequently Asked Questions - Oro Valley Remodeling

Will the addition look like an addition?

That is the standard we build to. We match roofline, pitch, brick and stucco, window proportion, and trim detail to the original house. On Craig and Mandy’s Oro Valley addition we tested stains until the new flooring met the old with no visible transition, and sourced brick and siding to match what was already there.

Can we live in the house while you build?

In most cases yes, and we plan for it from the start. An addition has the advantage that much of the work happens outside the existing envelope until the tie-in. We stage the schedule so the disruptive stretch is as short as we can make it.

Do you build casitas and accessory buildings?

Yes. Casitas, guest quarters, and primary suite additions are all regular work for us, and they are common in Oro Valley for multigenerational households and long-staying visitors.

Do you build basements?

No. Basements are not standard construction in Southern Arizona and we do not add them to existing homes. Additions here extend outward or upward.

How do you decide whether to build out or up?

Lot size, setbacks, drainage, grade, and what the existing structure can carry. Oro Valley lots vary a lot from one subdivision to the next, so we survey before we design rather than assuming.