St. Louis Home Expansion Made Easy.

Benchmark Custom Homebuilders Inc. is a family-owned general contractor specializing in home additions and room expansions in St. Louis. We offer services like Home Additions, Room Additions, ADU Construction, and Kitchen Remodeling.

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Benchmark Custom Homebuilders Inc. - Custom home builder in St. Louis
250+
Projects Completed
5
Avg Google Rating
15+
Years Serving St. Louis
100%
Licensed Builds
What We Do

Crafting Custom Spaces

A newly constructed home addition
Home Additions
Adding square footage to your home, we focus on expanding your living space while maintaining the architectural integrity of your home. From small bump-outs to full second stories, our home additions bring comfort and convenience to your living space.
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A spacious new room addition
Room Additions
Transform your living space with room additions tailored to your lifestyle. Whether you need a home office, playroom, or additional bedrooms, our room additions offer functional and aesthetic solutions to enhance your home.
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A modern accessory dwelling unit
ADU Construction
Accessory Dwelling Units (ADUs) are a great way to add value and functionality to your property. We specialize in constructing ADUs that blend seamlessly with your main home, offering independent living spaces for family, guests, or rental income.
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A beautifully remodeled kitchen
Kitchen Remodeling
Upgrade your kitchen with the latest designs and materials. Our kitchen remodeling services include new cabinetry, countertops, backsplashes, and appliances, creating a kitchen that is both stylish and functional.
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A luxurious bathroom remodel
Bathroom Remodeling
Refresh your bathroom with new fixtures, tiles, and layouts. Our bathroom remodeling service focuses on both aesthetics and functionality, creating a space that is enjoyable and convenient for everyday use.
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A finished basement with comfortable living space
Basement Finishing
Maximize your home's potential with professionally finished basements. Our basement finishing services transform unused space into comfortable, functional areas for entertainment, storage, or additional bedrooms.
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How We Work

Simple process, no surprises.

01
Free Consultation
We come to you, learn your goals, and answer every question. No pressure, no sales pitch.
02
Detailed Quote
A written scope of work with line-item pricing. You know exactly what you are paying for before we start.
03
We Build It
Our own crew on site, daily updates, and a clean worksite every evening. No subcontractor surprises.
04
Final Walkthrough
We walk every room with you before calling it done. You sign off, we consider it a success.
Reviews

What St. Louis homeowners say.

"The team at Benchmark is incredibly easy to work with. They listen attentively, offer thoughtful suggestions without ever pushing their own agenda, are straightforward and collaborative. What truly stands out, though, is how much emphasis Benchmark places on building relationships based on trust. Wo"

Jane D.
Home Addition

"Working with the entire team at Benchmark Custom Homes was a wonderful and stress-free experience, from start to finish! You will be treated as if you are a part of their family! Sydney and Mark (and the entire team at Benchmark) communicate extremely well and are very easy to work. I felt at ease t"

Michael S.
ADU Construction

"BenchMark homes does a fantastic job holding your hand through the entire home building experience. Their team of experts makes your dream home become a reality…and faster than most home builders. Would recommend BenchMark to anyone!"

Emily T.
Kitchen Remodeling
Get in Touch

Expand Your Home Comfortably

Contact us today for a free estimate. We promise a quick response within your busy schedule.

(314) 909-7593
St. Louis, Missouri — serving the surrounding area
Mon-Sat, 8am-6pm