
Expert Mountain Builders
We specialize in mountain remodels and additions that combine classic Colorado style with modern durability. From the first design to the final walk-through, we make sure your home is ready for whatever the high country throws at it.
Expert construction and renovations in Summit and Grand Counties
We know what it takes to build at high altitudes. From radiant floor heating for those freezing winters to engineering roofs that handle heavy snow, we focus on quality that lasts in the Colorado climate. Whether you’re planning a kitchen remodel or a custom garage, we handle everything from the first permit to the final inspection so you don't have to worry about the details.
Our Services
See how our expert craftsmanship can bring your unique home vision to life.
Expert Kitchen Renovations in Silverthorne
Kitchen Remodeling
Transform your kitchen into a beautiful and functional gathering space with our comprehensive remodeling services tailored for mountain living. From custom cabinetry and durable countertops to optimized layouts and lighting, we manage every phase of the project to ensure your kitchen reflects your unique style and needs.
Expert Custom Renovations for Mountain Living
Bathroom Remodeling
Transform your bathroom into a stylish and functional sanctuary with our expert remodeling services designed for durability in mountain environments. We specialize in custom showers, elegant vanities, and high-quality tilework that combine modern comfort with the craftsmanship needed to withstand high-altitude conditions.
Maximize your home's potential with custom living spaces.
Basement Remodeling
Our expert team transforms underused basements into functional, high-value areas like guest suites, home offices, and wet bars tailored to your lifestyle. We specialize in mountain-ready designs that prioritize energy efficiency and moisture resistance to ensure your new space remains comfortable and durable for years to come.
Expand your living space with seamless structural integration
Home Additions
Action Builder LLC provides expert home additions tailored to your lifestyle, ensuring new spaces blend naturally with your home’s existing architecture. From initial planning and local code compliance to the final walkthrough, we create functional and durable expansions that enhance both the value and aesthetic of your property.
Transform your entire property with a cohesive vision and expert management.
Whole-Home Remodeling
Action Builder LLC provides comprehensive whole-home remodeling services in Silverthorne and surrounding counties, managing every stage from initial design to final finishing. We specialize in creating unified, functional spaces that reflect your personal style while ensuring your home is built to withstand the unique mountain climate.
Custom Outdoor Living for Mountain Homes
Deck Building
We specialize in designing and building durable decks and patios that enhance your home's architecture and maximize your enjoyment of mountain views. Our expert team utilizes high-quality materials engineered to withstand snow load and intense sun exposure, ensuring a long-lasting and functional outdoor extension for your property.
Custom Outbuildings & Garages
Garage Builds
Action Builder LLC specializes in designing and constructing custom garages and detached structures tailored to withstand the demanding alpine climate of Silverthorne and the surrounding counties. We focus on mountain-ready materials and architectural harmony to create functional spaces that enhance your property's value and usability.
Custom secondary living spaces designed for mountain living.
ADU Construction
We design and build high-quality accessory dwelling units, carriage houses, and in-law suites that seamlessly integrate with your existing property and meet local zoning regulations. Our expert team manages every phase of construction to provide versatile spaces that increase property value while accommodating guests, family members, or rental opportunities.
Expert Builders for the Colorado High Country
Engineering that handles the altitude
Building for the Rockies
Building in the mountains is a different beast entirely. We design every project to stand up to heavy snow loads, intense high-altitude sun, and the rapid temperature swings common in Silverthorne and the surrounding counties. By using rugged materials and the right insulation techniques, we make sure your home stays durable and comfortable through even the harshest winters.

Clear communication and expert management
On-Site Leadership
Our owner, Ron Walsh, is on-site every day to oversee the work and keep you updated. We take care of all the paperwork and administrative headaches, including local zoning and building permits throughout Summit and Grand Counties. This hands-on approach ensures that every structural detail is handled correctly and every safety standard is met without you having to worry about the logistics.

Modern comfort with a local feel
Designs Made for Mountain Living
We specialize in updating mountain homes to fit a modern lifestyle while keeping their original character intact. Whether it is adding radiant floor heating for cold alpine mornings or building a custom ADU that blends right in with your property, our focus is on making your home more functional. We combine creative design with reliable construction to create spaces that are practical and beautiful.

Building Homes That Handle the High Country
Building in the Colorado Rockies isn't like building anywhere else. It takes more than a standard crew to manage the snow, the altitude, and the technical demands of the mountains. At Action Builder LLC, we combine that specialized expertise with your vision to create a home that is as durable as it is beautiful.
Handling the Red Tape
Getting Permits Right in Summit and Grand Counties
Every major renovation starts with a mountain of paperwork. We take care of the entire permitting and inspection process for you, making sure every detail meets Colorado's strict snow load and high-altitude safety standards. By handling the logistics ourselves, we keep the project on track and ensure your home is built to last.
We handle the regulations and paperwork so you can focus on the design of your new space.
Built for the Mountain Climate
Standing Up to Heavy Snow and Extreme Cold
High-altitude homes face challenges that standard building materials just can't handle, from intense UV rays to massive temperature swings. We focus on moisture resistance, energy efficiency, and staying warm. Our teams use specialized insulation and radiant heating systems that work reliably, even through the harshest winters.
Mountain building requires a specific set of materials and techniques that standard builders often overlook.
A Hands-On Process from Start to Finish
Direct Communication and Daily On-Site Oversight
Renovating in the mountains is a big investment, and major structural changes usually take between four and eight months. Throughout the project, our lead General Contractor is on-site every day to keep things moving. From the first layout change to the final walkthrough, we make sure every detail fits your lifestyle and your home's original character.
We want to modernize your living space while keeping its essential mountain feel.

Expert construction and remodeling for Summit and Grand Counties.
Build Your Home in the Colorado Rockies
Whether you are adding more space with a custom addition or updating your interior to better handle the mountain climate, we provide the local knowledge and technical skill to make it last. Our team handles every stage of the process, ensuring your project meets the high standards of mountain engineering while reflecting your personal vision for a functional, beautiful home. We understand the unique challenges of building at high altitude and work hard to make sure your home is as durable as it is comfortable.
Our Locations
Silverthorne, CO
(970)-393-3377
sunday
Closed
monday
8:00 AM - 5:00 PM
tuesday
8:00 AM - 5:00 PM
wednesday
8:00 AM - 5:00 PM
thursday
8:00 AM - 5:00 PM
friday
8:00 AM - 5:00 PM
saturday
Closed

Get In Touch
Whether you have a specific question or just want to learn more about our services, we're here to help. Send us a message and a member of our team will get back to you shortly.








