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Find Basement remodelers in Boulder

Avatar for March Construction
March Construction
4.62(
25
)

Angi Approved

In business since 1998

Free estimates

Warranties offered

"John did a bedroom/hallway remodel for us. He was awesome to work with and someone we could 100% trust with regard to what was needed and how much it costs! He helped us figure out what we wanted to do and made great suggestions. When we ran into some unique issues with the room, he worked with us to make some changes to the design and keep costs down. The remodel turned out awesome!! Highly recommend going with March construction!!"
Recommended by92%of homeowners
Alimar Construction, LLC
New to Angi

Angi Approved

In business since 1996

Free estimates

Alimar Construction, LLC is the premiere residential remodeler and commercial general contractor in the greater Wheatridge, Arvada, and Cherry Creek areas. We specialize in an array of expertise for all of your custom new construction and remodels. We have over 20 years of experience in the remodeling industry, and are considered by many to be masters within our trade. Our skillset is unparalleled and few can rival our quality of craftsmanship. We treat your home with the same care and consideration that we utilize when working on our own personal projects. Feel free to call us to schedule an initial consultation, as we're more than happy to meet with you and discuss your project today!

Avatar for 614 Drywall
614 Drywall
4.87(
62
)

Angi Approved

Super Service Award Winner

In business since 2017

Free estimates

Emergency services offered

"Emilio and his team did a fantastic job! More than pleased. Very thorough and efficient. Good communication along the way and love the final result. Highly recommend."
17 neighbors recently requested a quote
Recommended by75%of homeowners
Avatar for Truste Construction LLC
Truste Construction LLC
5.00(
17
)

Angi Approved

In business since 2012

Free estimates

Customers say: Quick response

"Truste Construction exceeded all our expectations. From initial estimations to final construction, Jeff Stedman and his team were fair, dependable and operated with quality throughout the process. I would HIGHLY recommend Truste Construction for those who want a project delivered with high quality at a fair price."
Recommended by100%of homeowners
Avatar for Colorado Paradise Builders, LLC
Colorado Paradise Builders, LLC
5.00(
9
)

Angi Approved

In business since 1997

Free estimates

Customers say: Terrific value

"Francisco Garcia did an excellent job finishing our basement. The work quality is excellent. The communication and flexibility throughout the project was excellent. The project finished on time within budget with zero surprises. Any concerns that arose were addressed expeditiously and professionally. I highly recommend Colorado Paradise Builders for your next project. The building inspections were coordinated by Colorado Paradise Builders and passed easily. We learned while talking to the inspectors that we had a gift by using Francisco as a general contractor. They mentioned other people in the business may not provide the level of customer service and professionalism which Colorado Paradise Builders demonstrated on our basement finishing project. I could not be more enthusiastic with a recommendation."
6 neighbors recently requested a quote
Recommended by100%of homeowners
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FAQs for basement remodeling projects in Boulder, CO

Finishing a basement turns unused square footage into livable space and returns up to 70% of what you spend when you sell your home. Beyond that resale boost, you gain a playroom, home office, or guest suite you can start enjoying right away. That mix of daily comfort and solid return on investment (ROI) makes basement finishing one of the smartest upgrades you can tackle.

In some parts of the country—especially lots on swamps, high water tables, or other wetlands—local codes prohibit basements. Saturated soil puts constant pressure on foundation walls and lets water seep in faster than any sump pump can handle. 

If your property sits on waterlogged ground, building on a slab or crawl space is often safer, more affordable, and code-compliant.

Most basements wrap up in four to eight weeks. Framing takes three to five days, with electrical and plumbing rough-ins following over the next week. Add five days for drywall, two to three for flooring, and another week for paint, trim, and punch-list items. 

Delays can happen if materials run late or your contractor’s calendar is packed, so build in a little cushion when you plan.

Whether a finished basement counts toward your home’s official square footage depends on local rules. Many areas only include below-grade space if it has code-approved egress, fully finished walls, ceilings, and floors, plus consistent heating. 

Check with your local assessor or building department before you start; meeting those standards can affect taxes, appraisals, and resale value.

Building codes require a checklist: dedicated heat and electrical service, a code-approved stairway, and at least one egress window or exterior door. Walls, ceilings, and floors must be fully finished and meet insulation, ventilation, and fire-separation standards. If you add a bedroom, you’ll also need a closet, proper clearances, and safe exits. If you change the layout later, be ready to update the space so every new room still meets today’s code.

The Boulder, CO homeowners’ guide to basement remodelings

From average costs to expert advice, get all the answers you need to get your job done.