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Start the Conversation
Every project at Cosman Construction starts the same way — a conversation with Alex. No sales rep, no pressure, no obligation. Just an honest assessment of your project and what it will take to do it correctly.
Whether you're planning a custom deck, a full home addition, an interior remodel, or an exterior remodeling project — or you're not quite sure yet what your home needs — this is the right first step.
Alex reviews every inquiry personally and responds the same day. From there, if it makes sense, we schedule a no-cost site visit — on your property, looking at the actual space — before any design or estimate work begins. No commitment required to have that conversation and no deposit required to get a design started.
Homeowners searching for home remodeling contractors near them across Boulder County will find that Cosman Construction operates differently — one point of contact, one team accountable, and Alex present from the first conversation through the final walkthrough.
Call 303-775-6690 or fill out the form below and Alex will be in touch directly.
Request A Quote
We look forward to discussing your deck, additions, remodeling & railing project. Please fill out our form and we will be in touch to schedule your free consultation.
Our Services
Not sure where to start? Here's what we build across Boulder County and the surrounding Front Range.
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Outdoor living spaces and custom deck building
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Exterior remodeling — siding, painting, windows and doors
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Interior remodeling — kitchens, bathrooms, whole home renovations
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Home additions — primary suites, kitchen expansions, second-story builds
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Design-build projects of all scopes
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Design refresh services
Planning a Home Addition?
Home additions are among the most significant investments a Boulder County homeowner can make — and among the most consequential if the design and structural work isn't handled correctly from the start. We handle the full addition scope under one contract — structural modifications, kitchen expansions, primary suite additions, and the complete permitting process Boulder County requires. If you've outgrown your floor plan and moving isn't the answer, the conversation starts here.
