The short answer
Most meaningful home additions are six-figure projects. A simple expansion with straightforward access and modest finishes will sit in a different range from a primary suite, a kitchen expansion, or a second story that requires major structural reinforcement.
Cost-per-square-foot figures can be useful for very early orientation, but they often miss architecture, engineering, permitting, excavation, utility work, remodeling at the connection point, and the cost of matching the existing home.
The type of addition changes the budget
A bedroom or family-room expansion generally contains fewer expensive systems than a primary suite or kitchen. Building upward may preserve yard area, but it can require roof removal, temporary weather protection, stair changes, and reinforcement through the floors below.
- Primary-suite additions
- Kitchen and great-room expansions
- Second-story additions
- Rear or side additions
- Garage additions with living space
- Multi-room major expansions
The connection is part of the project
A successful addition should not feel appended. Creating that continuity may involve reworking the existing roof, exterior materials, windows, flooring, trim, mechanical distribution, and interior circulation. The construction zone often extends well beyond the outline of the new square footage.
Site access, excavation, slope, utility locations, drainage, and neighborhood requirements also affect the plan before vertical construction begins.
What should be included in an early budget
A useful planning budget should account for design and engineering, permits, site work, foundations, structure, exterior enclosure, mechanical systems, interior finishes, contractor supervision, temporary protection, and contingency. Owner-provided items and soft costs should be identified rather than silently excluded.
How preconstruction creates clarity
Begin with a site and existing-home evaluation. Develop a concept that solves the space problem, then test it against zoning constraints, structural feasibility, project logistics, and the owner’s investment range. As the design advances, trade partners can price defined scopes and the team can track decisions that affect cost.
This sequence helps answer the most important question early: whether the proposed addition is the right investment compared with a different remodeling approach or a future custom home.
Planning an addition with Ashen
Ashen Construction plans and builds substantial home additions in Sandy, Draper, Park City, and surrounding Utah communities. We work with homeowners and design teams to make scope, budget, schedule, and constructability visible before construction begins.