Custom ADU Builders in Colorado’s Mountain Communities
In Colorado’s high mountain towns, space and housing are in high demand. Adding an Accessory Dwelling Unit (ADU) offers homeowners a smart way to support their community, increase property value, and create lasting flexibility for the future.
Our Approach to ADU Design and Construction
Every ADU starts with a conversation about your goals, property, and vision.
Whether your ADU will be a long-term rental, short-term guest home, or studio apartment, we help you navigate design, permitting, and construction with ease.
S&T Construction specializes in:
Garage-top apartments and backyard cottages
Over/under duplexes with secondary units
Attached and detached ADUs for flexible use
Energy-efficient construction suited to mountain climates
In Colorado’s high country, every square foot matters
We design and build ADUs that make the most of your property — inside and out. Our ADUs often feature:
Compact, open layouts that feel spacious and bright
Mountain-view windows and decks for outdoor connection
Durable, low-maintenance materials for high-altitude weather
Finishes and details that feel like home, not an add-on
Whether you’re creating a guest space for visiting family or a cozy rental, your ADU will be built with comfort, quality, and character.
Why homeowners choose S&T Construction for their ADU
Building an ADU in mountain towns takes more than just skill — it requires local knowledge, flexibility, and transparent communication.
Homeowners trust S&T because we:
Understand local permitting and zoning for ADUs in mountain communities
Have completed multiple successful ADU projects in the region
Offer design-build expertise for both custom and build-from-plan ADUs
Stay communicative and organized from start to finish
Service Area
S&T Construction proudly builds ADUs across Chaffee, Lake, and Park County, Colorado: