Home Additions in Tempe, AZ

Because there is so little vacant land left inside Tempe, adding square footage to your existing home is often more realistic, and usually more cost-effective, than finding and buying a new lot in the same location near ASU or the lake.

Yes, second-story additions are common on single-story Tempe homes, and we start with a structural assessment of the existing foundation and framing to confirm what the house can support before finalizing a design.

Yes. Accessory dwelling units are an increasingly common request here, consistent with the city’s broader infill growth, and we manage the design and permitting for both detached and attached ADUs.

Yes, we design every addition to match rooflines, materials, and proportions of the existing house rather than reading as an obvious tack-on.

Yes, additions require building permits from the City of Tempe, and on an infill lot we also confirm setback and lot-coverage limits before finalizing the design, since those can affect what’s buildable.

Timeline depends on scope — a single-room addition typically takes a few months, while a second-story addition or detached ADU runs longer given the structural work involved.

Cost depends on square footage, structural complexity, and finish level, so we build a line-item budget specific to your project rather than quoting a flat number up front.

In some cases yes, but many additions need their own mechanical zone sized for Arizona’s summer heat rather than straining the existing system, and we evaluate that during design.

Yes, every addition is backed by a workmanship warranty in addition to manufacturer warranties on installed systems and materials, with a formal walkthrough before we call the project complete.

In most cases yes, since the existing living space typically stays intact while the new construction happens, though a second-story addition involves more disruption than a ground-floor room. We’ll walk through what to expect for your specific project.