The 10 Best Addition contractors in Boulder, CO

Melton Design Build is a design-build firm in Boulder, CO. We bring your dreams to reality through innovative design and an approach that ensures your project is on time and on budget.

Additions, Kitchens, Bathrooms, Offices, Structural. We have been remodeling homes and businesses for over 30 years. You may know exactly what you want or have only a general idea- we can help with expert experience and advice to help plan your project, We can design your project or steer you toward design professionals that can help. Budget concerns? No worries, we can help you figure out cost... (more)

SoBo Homes is a custom residential construction company that works in and around Boulder, Colorado. We are a design/build company that specializes in home remodels, additions, green building, and improving living spaces.

We are a full-service Commercial & Residential Construction, Investor Renovation, and Multi-Family company with 30+ years of cumulative experience on our team from Real Estate to Remodeling to Tenant Improvements and more.

Sheldon Builders provides building and remodeling services in Boulder, CO, and along the Front Range. Our combination of high-quality craftsmanship, an understanding of aesthetics, and sustainable building practices creates beautiful, efficient homes. We love to work on a variety of projects. Our projects include simple remodels and additions, small cabins and affordable houses, and... (more)

Rob Luckett Builders specializes in new homes, remodels, and additions in the Front Range and Boulder County. We enjoy unique architecture and are comfortable with fine finishes. We pay great attention to detail.

Notable project: (Single family detached dwelling - addition and remodel. 609 Linden Park Dr, Boulder, CO, 80304). Remodel and addition to single family detached dwelling. remodel areas to include the kitchen baths and bedrooms on the main floor with removal of one bathroom. the addition will be in the former attic area over the attached garage. area of addition to include master suite with... (more)

Notable project: (Single family detached dwelling - remodel. 2318 17th St, Boulder, CO, 80304). Interior remodel-remove exiting flat ceiling in living room and dining room and vault ceiling while maintaining existing roof structure. scope includes removal of wall at main floor bedroom. scope includes new roof insulation electrical and mechanical (relocation of return air)

Notable project: (Residential accessory building. 4667 Devonshire St, Boulder, CO, 80301). Addition pickets to fence(withdrawn-pickets gone-2/24/09)

Notable project: (Non-residential building - remodel. 5445 Airport Blvd, Boulder, CO, 80301). Interior remodel of suite 106 including removal of non-bearing walls installation of non-bearing office walls rolocation of service sink update breakroom for accessibility compliance. scope of work includes associated electrical mechanical and plumbing

Notable project: (Single family detached dwelling - addition and remodel. 607 Mapleton Ave, Boulder, CO, 80304). Remodel and addition to single family dwelling. on the main level the master bathroom will be remodeled and fireplace replaced with a gas fireplace. on the lower level storage areas will be added/excavated under existing main level dining room and master bedroom. the remainder of the... (more)

Notable project: (Single family detached dwelling - addition and remodel. 1517 7th St, Boulder, CO, 80302). One story addition with full basement to existing single family detached dwelling. addition includes two new bedrooms one master bathroom laundry and a basement storage area. scope also includes a new hvac system for the entire structure. **addition to scope - - addition rough-ins for... (more)

Notable project: (Non-residential building - tenant finish. 5541 Central Ave, Boulder, CO, 80301). Tenant interior finish (31, 900 sqft) permit associated for technical office space associated with addition core and shell permit pmt2015-03849. the scope includes offices meeting rooms a breakroom/kitchen space and interior stairs. the restrooms elevator and service facilities are under the core... (more)

Notable project: (Single family detached dwelling - addition and remodel. 814 Gapter Rd, Boulder, CO, 80303). Two story addition and remodel to single family detached dwelling. main level of additon to contain a hall a relocated bathroom and laundry. the upper level of the addition will contain a relocate bathroom. the additional upper level bathroom will be expanded. floodplain development... (more)

At Tectonic Design Build, we understand that your home is more than just a structure - it's your sanctuary. That's why we approach every project with the goal of creating a beautiful, functional space that enhances your life. We're your #1 Boulder home builder and general contractor, specializing in custom home remodeling and building high-performance homes, so you can rest assured that... (more)

Notable project: (Non-residential building - remodel. 693 S Broadway St, Boulder, CO, 80305). 669 broadway - tenant finish/remodel of 1511 sq.ft. (sweet cow ice cream). scope of work includes associated meps including rerefrigeration. any electrical service upgrade and/or new electrical panel under separate permit

Notable project: (Multi-family dwelling - remodel. 1064 13th St, Boulder, CO, 80302). Unit 4: addition on interior non-bearing wall and associated electrical to create office space off living room in multifamily unit. wall height will be limited to 42 inches

Notable project: (Single family detached dwelling - addition and remodel. 860 6th St, Boulder, CO, 80302). Addition and remodel for a single family detached dwelling. addition will be approximately 2922 sqft. of two stories over finished basement to the rear of the existing structure and of second floor over existing structure. basement addition will include bedroom bathroom laundry and... (more)

Notable project: (Building, electrical, mechanical, plumbing. 2680 3rd St, Boulder, CO, 80304). New 2 story home with finished garden style basement. 4,192 sq.ft. main & upper levels and 2,651 sq.ft. for lower/basement level. main level porches of 459 sq.ft. main level deck of 232 sq.ft. upper level deck of 749 sq.ft. lower level garden area pergola & breezeway 300 sq.ft. scope of work includes... (more)

Notable project: (Alteration of a townhome. 1534 Macarthur Dr, Boulder, CO, 80303). Interior remodel of kitchen in townhome unit including replacement of cabinets and countertops installation of 4 new can lights in ceiling replace 3 additional can lights new outlets associated drywall and finishes. no structural work proposed or approved through this perimt