Peak Builders
Home Additions in Denver

Home Additions in Denver

80+ Denver pop-tops + additions since 1999. Licensed Colorado GC. Full engineering + permit + construction management. 5-year warranty.

TRUSTED BY DENVER HOMEOWNERS

Our Credentials & Reviews

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Denver's housing stock is full of single-story bungalows and mid-century ranches that feel cramped the moment a family grows. Moving is expensive — and with today's mortgage rates, giving up a 3% loan to buy something bigger is a painful tradeoff. A home addition solves the space problem without giving up the house or the neighborhood.

Peak Builders has done 80+ additions across Denver metro. Here's what actually matters.

The Denver Pop-Top

The most requested scope in Denver is a pop-top: building a full second story on top of an existing single-story ranch or bungalow. Park Hill, Wash Park, Platt Park, and Highlands neighborhoods are full of these projects because the lots support them, the neighborhoods support the value, and buyers recognize them.

A pop-top doubles your square footage without touching your footprint. It works well when the neighborhood already has two-story homes nearby — if yours is the only raised structure on a block of ranches, that can be a resale consideration worth discussing.

Structurally, pop-tops require engineering. Your existing foundation and framing weren't designed for a second story. Most single-story ranches need new floor joists, an LVL beam or two, and often foundation reinforcement around the perimeter. A licensed Colorado structural engineer is part of every pop-top project, not an optional add-on.

Rear Additions

Expanding horizontally into the backyard works well for primary suite additions, kitchen expansions, family rooms, and in-law suites. Most clients can stay in the home during a rear addition — work stays separated from the main living area. Denver zoning setback rules apply, so the addition must maintain required distances from the property lines.

Garage Conversions

Converting an existing attached or detached garage into finished living space is the fastest and lowest-cost path to more square footage. Denver zoning typically requires you to account for the lost parking — either a new pad or a detached replacement. The structural work is lighter because you're working within an existing shell.

What to Expect from the Permit Process

Denver's building department is thorough. Pop-tops and rear additions with structural work typically take 6–10 weeks for permit approval. Historic districts (Wash Park, Country Club, parts of Capitol Hill) add Landmark Preservation Commission review — plan 8–12 additional weeks if your property has that overlay. We check this at the consultation before you commit to a schedule.

Our Approach

We do design, engineering coordination, permits, structural work, MEP (mechanical, electrical, plumbing), insulation, drywall, flooring, cabinets, and finish. One project manager from start to finish. The contract covers defined scope; any scope changes are written up and approved before work begins.

Getting Started

Book a free in-home consultation. We'll assess the structure, check zoning, and give you a clear picture of what's buildable and what's involved before you make any decisions.

Call (720) 605-7785 or book online.

Ready to get started? Free on-site consultation.

Our Work

Home Additions — Project Photos

Home addition framing Denver
Room addition under construction Denver
Second story addition Denver
Planning home addition Denver
At a Glance

Home Addition Types

Common addition scopes and what to expect

Bump-Out (≤ 200 sq ft)

Permit
Yes
Typical Timeline
2–3 months
Can I Stay Home?
Usually yes
Best For
Kitchen expansion, breakfast nook

Room Addition

Most Popular
Permit
Yes
Typical Timeline
4–6 months
Can I Stay Home?
Yes, with disruption
Best For
Primary suite, family room

Pop-Top (2nd Story)

Permit
Yes + structural
Typical Timeline
7–10 months
Can I Stay Home?
Vacate during framing
Best For
Doubling sq footage without expanding footprint

Home Addition Services

Room Additions

Room Additions

Add bedrooms, offices, or living space with custom room additions. Seamlessly match existing architecture.

  • Custom floor plans
  • Seamless integration
  • Increased home value
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Second Story Additions

Second Story Additions

Maximize your lot with a second-story addition. Add multiple bedrooms and bathrooms without reducing yard space.

  • Doubles living space
  • Preserves yard area
  • Architectural integration
Learn more
Sunroom Additions

Sunroom Additions

Enjoy Colorado sunshine year-round with a custom sunroom or four-season room. Natural light and mountain views.

  • Year-round comfort
  • Large windows & natural light
  • Heating & cooling options
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Garage Additions

Garage Additions

Add a new garage to your property. 2-car, 3-car, and workshop options with potential ADU above.

  • 2-car or 3-car options
  • Workshop areas
  • ADU above potential
Learn more
In-Law Suite

In-Law Suite

Independent living space with bedroom, bathroom, and kitchenette. Perfect for aging parents or adult children.

  • Private entrance option
  • Full bathroom & kitchenette
  • ADA-compliant design
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Bump-Out Additions

Bump-Out Additions

Expand existing rooms by 2-4 feet to add space for kitchen islands, breakfast nooks, or bathroom upgrades.

  • Cost-effective expansion
  • Minimal foundation work
  • Seamless integration
Learn more
Porch Enclosures

Porch Enclosures

Convert your porch into a three-season or four-season room. Enjoy outdoor living with climate control.

  • Screened or glass options
  • Climate control available
  • Uses existing space
Learn more
Mudroom Additions

Mudroom Additions

Add a functional mudroom with storage, bench seating, and organization for Colorado's outdoor lifestyle.

  • Custom storage
  • Bench seating
  • Pet-friendly options
Learn more

Frequently Asked Questions

A mid-range kitchen remodel in Denver generally runs 6 to 10 weeks from demo to final walkthrough, while a bathroom remodel is usually 3 to 5 weeks. Those timelines assume permits are pulled before work starts and that material selections are finalized early. Delays in choosing tile, cabinetry, or fixtures are the most common reason projects run long, so we encourage clients to lock in selections before the first hammer swings.

Yes, nearly all basement finishing projects and all home additions in Denver require a building permit through Denver Community Planning and Development. Structural work, electrical, plumbing, and mechanical changes each trigger their own inspections. We handle the permit applications on your behalf, and we never recommend skipping permits — unpermitted work can create serious problems when you sell or file an insurance claim.

Your HOA can require you to submit plans for approval and impose design standards, but it generally cannot override a valid City of Denver building permit once you meet its covenants. The practical step is to submit your project drawings to your HOA architectural review committee before we pull city permits, so both tracks move in parallel. We can prepare the documentation your HOA typically requests and flag any covenant restrictions that might affect your design.

A design-build firm handles architecture, design, and construction under one contract, which streamlines decisions and keeps accountability in one place. A spec builder constructs homes or units on speculation to sell later, with no client customization involved. We operate as a design-build remodeler, meaning we guide you from concept and drawings through finished construction rather than selling pre-built product.

We work with third-party financing partners that offer home improvement loans, and many Denver homeowners also use home equity lines of credit or FHA 203(k) rehab loans for larger projects. We can walk you through the options that typically fit projects of your scope during an initial consultation. We do not act as a lender, but we can provide the detailed cost estimates lenders require.

After a hail event, the first step is a professional roof inspection to document damage before you file a claim with your insurer. We can provide that inspection and a written damage report that matches the format adjusters expect. Once your claim is approved, we work directly with your insurance company to align our scope of work with the approved estimate, so there are no billing surprises on your end.

Waterproofing and basement finishing are separate scopes, and waterproofing should always come first. If your Denver basement shows any signs of moisture intrusion, efflorescence, or past flooding, we assess and address that before framing walls or installing flooring. Finishing over an unaddressed moisture problem is one of the most expensive mistakes homeowners make, so we treat it as a prerequisite rather than an upsell.

Denver has broadly legalized accessory dwelling units across most residential zones under its 2021 zoning updates, but rules on size, setbacks, height, and lot coverage still vary by zone district. A detached ADU on a standard Denver lot typically cannot exceed 35 percent of the main home's square footage or 1,000 square feet, whichever is less. We pull your specific zoning designation early in the design phase to confirm what is allowable before you invest in drawings.

Interior remodels — kitchens, bathrooms, basements — proceed without meaningful weather-related delays in winter. Exterior work like additions, roofing, and concrete flatwork is more sensitive to temperature and precipitation, though experienced Denver crews plan around forecast windows and use heating blankets for concrete pours. We schedule exterior phases to minimize cold-weather risk and build reasonable buffer into winter project timelines.

We provide a one-year workmanship warranty on all remodeling and construction work, covering defects in installation and labor. Manufacturer warranties on materials — cabinetry, windows, roofing systems, appliances — are separate and pass directly to you at project completion. If something fails within our warranty period, we schedule a correction visit promptly and at no charge to you.

Get in touch today.

Ready to start your home additions project?

Call +1-720-605-7785
LocationServing Denver Metro