Home Addition Contractors in Boulder, CO

Adding onto your home in Boulder is one of the best ways to get more space without giving up your location.

However, these projects come with strict zoning rules, limited lot coverage, and detailed permitting requirements that vary by neighborhood. Every project requires the expertise of a land surveyor, engineer, architect, and builders experienced with working in Boulder.

Working with PR Builders allows you to have these professionals by your side every step of the way. With a full-service design-build approach, we make your home addition experience seamless from start to finish.

Home Addition Services in Boulder, CO

Owner's Suite Additions

Add a spacious master suite with a larger bathroom, walk-in closet, private balcony, and more.

Kitchen Expansions

Open up your existing kitchen with more counter space, extra storage, and a better layout. Whether you're knocking down walls or building out, we help create a kitchen that works for you.

Add Bedrooms & Bathrooms

Need more space for a growing family or guests? Adding bedrooms and bathrooms can improve your home’s function and value, giving everyone the room they need.

In-Law Suites & ADUs

Add private living space by combining rooms into an open-concept layout or adding on to your home with an accessory dwelling unit (ADU).

Add Basement Space

A crawl space to basement conversion in Boulder can help you turn your partial basement into a full finished basement space for additional square footage.

Second-Story Additions

Expanding upward with a pop top is ideal for homes on smaller lots, where ground level additions aren’t feasible.

Preparing for Your Addition: Home Addition Design & Build

Whether you’re expanding your home or building an addition as part of a larger remodel, our design-build process allows you to work alongside our professionals at every step of the way.

Building Out a Budget That Works for You

You should have an idea of your budget before starting, and we help you understand what will factor into the overall cost—permits, materials, labor, and more. Throughout the preconstruction process, we help you finalize a very detailed budget that accounts for site conditions, design choices, structural needs, and more.

Soil Testing & Surveys

The soils in Boulder are diverse, from expansive clays to rocky areas near the foothills. Understanding your property’s soil type helps us design your addition with the right foundation type, shoring, construction methods, and drainage systems. We prepare a survey with a grading plan to map your lot’s elevations, changes to slope, and drainage for the proposed project.

Asbestos Inspection & Removal

For homes built before 1988, an asbestos inspection must be done before acquiring permits and doing any demolition work. If asbestos is found, we remove it before any demo work or construction work takes place.

Design & Engineering

To get your vision on paper, we pair you with our home addition architects to make your plans a reality. Taking into account your location, project scope, and your needs and budget, we pair you with a professional that has experience in your unique project type. We work with you to develop the design into detailed architectural plans, elevations, and 3D renderings, helping you visualize the proposed addition inside and out.

Home Addition Permits

With finalized construction documents, we start the review and approval process with the local planning department. Boulder has strict permitting requirements for home additions—zoning laws, height restrictions, and energy efficiency will all play a role in the approval process. With our experience working in Boulder and navigating its permitting system, we handle everything from zoning verification to final approval.

Selections

Once the design is finalized, our selections coordinator guides you through selecting materials, fixtures, and finishes that fit your style and budget. Making selections during preconstruction helps keep costs accurate and ensures materials arrive on time, preventing delays once construction begins.

Building Your Addition

After thoroughly defining the cost, scope, and schedule for your project during the preconstruction process, construction can begin! With a clear plan in place, we keep the project on track, making sure the work is completed efficiently and to the highest standards.

See What’s Possible: Plan Your Home Addition with PR Builders

Planning a home transformation?

PR Builders are trusted, licensed and insured home addition contractors in Boulder, Denver, and the surrounding areas.

No project you envision is too big or too complicated for us to find you the perfect solution for adding more usable space to your home.

How can we help you bring your vision to life?

Past & Current Projects in Boulder, CO

Boulder, CO

FAQ: Home Additions in Boulder

Can I add a second story to my home in Boulder?

Adding up, or building a pop top, depends on your zoning district, lot size, and existing home. Boulder has height restrictions, solar access regulations, and neighborhood compatibility reviews, especially in older or historic neighborhoods. To see what’s possible with your home, send us a few details or call us at 970-692-3122 and we can explore options for more square footage.

Will a home addition increase my property value?

In most cases, yes—especially if you’re adding bedrooms and bathrooms or expanding key living areas like your kitchen. Boulder has a high-demand market, which means well-designed additions often boost your resale value significantly.

Can I build an ADU in Boulder?

Boulder allows ADUs (accessory dwelling units), but there are strict regulations about where they can be built. Your lot size, zoning, parking availability, and owner-occupancy will all factor in. Detached ADUs (backyard ADUs) are usually limited to certain neighborhoods and must follow design guidelines. For more information, visit bouldercolorado.gov’s resource on ADUs or contact us.

Are there sustainability requirements for home additions in Boulder?

Boulder has relatively strict energy efficiency and green building requirements that apply to additions, especially if you’re adding over 500 square feet. Your addition will need to meet energy standards, insulation upgrades, solar readiness, and more depending on the project size. See some of our recent net-zero energy builds in Boulder by visiting our portfolio.