Basement Apartments
Turn your basement into a separate apartment.
CasaMás Construction designs and builds basement apartments across Utah, with service available in English and Spanish.
A basement apartment is a self-contained living unit below your home — its own entrance, kitchen, bathroom, bedroom(s), and egress — built for rental income potential or independent family living. It is the rental-focused form of a finished basement. CasaMás Construction handles design, egress windows, a separate entrance, kitchen and bath plumbing, permitting, and finishes, when allowed by local city rules.
Who it’s for
For homeowners who want rental income potential, a long-term guest or family unit, or a flexible separate space — making the lower level work harder. For a basement family room or bedrooms instead of a separate unit, our basement finishing service is the better fit.
What’s included
Separate entrance
A private walkout or exterior entrance for a true separate unit.
Kitchen & bath
Full kitchen and bathroom plumbing for a self-contained apartment.
Egress & code
Egress windows and code-ready bedrooms for safe, legal living space.
Soundproofing & privacy
Insulation and finishes that keep the unit private from the main home.
Laundry hookups
In-unit or shared laundry for a complete living space.
How your project works
- 1
Free consultation
We listen to your goals and look at your space — in English or Spanish.
- 2
Design & estimate
Clear scope and a written estimate. Monthly payment examples are estimates.
- 3
Permits & build
We handle permitting and construction with licensed, insured, and bonded crews.
- 4
Enjoy your space
More room, more income potential, and more equity in your home.
What affects your cost
Basement-apartment cost depends on square footage, the separate entrance, kitchen and bath plumbing, egress, soundproofing, and finishes. After reviewing your space, we provide a clear written estimate — no invented numbers, no pressure.
Financing options may be available, subject to approval. Monthly payment examples are estimates.
Where we work
CasaMás builds basement apartments across Salt Lake, Utah, Davis, Weber, and Tooele counties. Basement-apartment rules vary by city; we help confirm what’s allowed by your local city rules and handle permitting.
- Salt Lake County
- Utah County
- Davis County
- Weber County
- Tooele County
Project photos
Photos coming soon
We’re adding real Utah projects for this service. Ask us for recent examples during your free estimate.
Frequently asked questions
Can I legally rent a basement apartment in Utah?
A basement apartment can add rental income potential when allowed by local city rules — many Utah cities permit it with proper permits, egress, and a separate entrance. We help confirm what’s allowed by your local city rules and handle permitting. We don’t guarantee rental income, city approval, or permits.
How is this different from finishing my basement?
A finished basement adds living space for your household; a basement apartment is a separate, self-contained unit with its own entrance, kitchen, and bath. Our basement finishing service covers the non-apartment option.
Do I need a separate entrance and egress?
A separate unit generally needs its own entrance and code-compliant egress windows for bedrooms. We handle these as part of your project, when allowed by local city rules.
What affects the cost?
Square footage, the separate entrance, kitchen and bath plumbing, egress, soundproofing, and finishes. We provide a free written estimate; monthly payment examples are estimates.
Do you offer financing?
Financing options may be available, subject to approval. Monthly payment examples are estimates.
Related services
Get your free estimate
No pressure. We'll give you clear options for your project.