Custom Homes and Renovations in Boulder, CO

How You Build Matters

Building Green Since 1995

What We Do

  • At Cottonwood Custom Builders, we create custom homes designed around the way our clients live. From initial planning through final construction, we work closely with homeowners, architects, and designers to deliver homes that are thoughtful, functional, and built to last.

    Our custom homes are tailored to each site, lifestyle, and vision — whether that means a modern mountain retreat, a timeless family home, or a highly detailed legacy property. We focus on quality craftsmanship, transparent communication, energy-efficient building practices, and durable materials suited for Colorado’s climate.

    Every project is managed with careful attention to detail, ensuring a smooth building process and a finished home that feels both personal and enduring.

  • At Cottonwood, we specialize in renovations and remodels that improve the functionality, comfort, and character of a home while maintaining architectural integrity.

    Whether updating a kitchen, reconfiguring interior spaces, finishing a basement, or completing a whole-home renovation, we approach every project with thoughtful planning and quality craftsmanship. Our team works closely with homeowners and design professionals to create spaces that feel cohesive, intentional, and built for modern living.

    We also have extensive experience working in older and historic homes, carefully integrating modern systems and upgrades while preserving original details and craftsmanship.

  • Cottonwood designs and builds additions and accessory dwelling units (ADUs) that expand living space while blending seamlessly with the existing home.

    From primary suite additions and expanded living areas to detached guest houses, garage apartments, and multi-generational living spaces, we help homeowners create flexible spaces that add both functionality and long-term value.

    Our team manages the entire process — including planning, permitting, structural integration, and construction — with a focus on architectural continuity, thoughtful design, and lasting craftsmanship.

  • While no home can be 100 % fire-proof, Cottonwood drastically reduces fire risk through smart design and materials. After witnessing the devastation of the Marshall and Fourmile Canyon Fires we are committed to ongoing learning and implementation of fire-resistant construction. 

    With Colorado’s wildfire threat rising thanks to climate change, building with fire-resilience in mind is no longer optional. 

    Our fire-resistant strategies include: 

    • A building envelope made of non-combustible materials and designed to resist ember intrusion. 

    • Heat and fire-resistant windows, with options for exterior shutters. 

    • Landscaping that clears hazardous growth near the home and incorporates irrigation systems that dampen the area during fire events. 

    • Decks and patios constructed so the house is protected rather than vulnerable to burning.

  • At Cottonwood, we specialize in historical home building and restoration - honoring the craftsmanship, detail, and legacy that make these homes timeless. Our team understands the unique requirements of preservation and is experienced in navigating local historic review processes. We partner with trusted architects, preservation specialists, and skilled craftspeople to ensure each restoration respects the home’s original character while enhancing its performance, comfort, and longevity.

Featured Projects

  • "Cottonwood Custom Builders are green building experts!

    The Cottonwood team is professional, reliable, collaborative, and of the highest integrity. They do high-quality work and are always up to date with the latest building materials and practices. We were especially happy that they are environmentally conscious and green building experts. They completed our project on time and on budget. We highly recommend working with Cottonwood!”

    — Paula D., Custom Home Client (Boulder, CO)

  • "While some contractors try to convince owners that a lower standard is acceptable, Cottonwood works hard to make sure their subcontractors meet extremely high standards.

    They strongly believe in customer satisfaction and work hard to meet the clients expectations. We highly recommend them! Having worked with Cottonwood for over 20 years, we highly recommend them!”

    Harvey M. Hine, HMH Architecture + Interiors (Boulder, CO)

  • "Cottonwood has been a professional, dedicated and skilled contractor to work with. We admire their expertise in sustainability and green building and look forward to continuing to work with them."

    Sopher Sparn Architects LLC (Boulder, CO)

Ready to build your dream home?

From custom homes to full-scale renovations, we guide you from concept to completion with precision and care. Fill out the inquiry form to discuss your upcoming project!

(303) 449-3076

office@cottonwoodcustombuilders.com

Modern living room with large windows, a fireplace, white sofa, black armchairs, and a black grand piano.