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CO · Climate zone 4–7

Custom House Plans in Colorado

Building in Denver, Colorado Springs, Boulder or anywhere else in Colorado? We draw your home from scratch around your inspiration, your lot and Colorado's climate and code requirements. Customization is free and delivery starts at 24 hours.

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Climate & energy

IECC climate zone 4–7. Insulation, window performance and HVAC sizing are drawn to match.

Foundations

Crawlspace or basement, depending on soil and lot slope.

Permit-ready add-on

Engineer stamp for Colorado: $750. Requirements vary by county, so check with your local building department.

Building requirements

Building a house in Colorado: what the code requires

Codes adopted locally (no mandatory statewide code)

Building code
No statewide residential code. Counties and cities adopt IRC editions with amendments (Denver has its own Denver Building Code).
Energy code
State law requires jurisdictions that update codes to adopt a recent IECC edition plus electric- and solar-ready provisions.
Climate zone
IECC climate zone 4–7. Insulation, windows and HVAC are sized to match.
Typical frost depth
30–36 in (Front Range), 36–48 in+ (mountains). Footings must extend below the local frost line (confirm with your building department).
Foundations
Crawlspace or basement, depending on soil and lot slope.
Who can draw the plans
Single-family homes can generally be designed by a non-licensed home designer. A licensed engineer's stamp is often required for structural items, engineered foundations or special hazard zones, or when the local building official asks for it.
Engineer stamp
If your jurisdiction requires sealed drawings, add our Colorado Engineer Stamp / Permit-Ready package ($750).

Colorado-specific rules & hazards

Summary for planning only. Codes, editions and local amendments change, so always confirm current requirements with the building department that will issue your permit. Our designers check your jurisdiction before drawing.

City building requirements in Colorado

House plans we draw in Colorado

Every plan is drawn from scratch for your lot in Colorado, with free customization and 30 days of revisions.

Towns, villages & rural counties

Permit checklist for building in towns & counties across Colorado

Requirements differ town by town. Use this checklist with your local building, zoning and health departments, and include what you learn in your design instructions. We'll draw to it.

  1. 01Find who issues permitsIncorporated towns and cities usually have a building department. In unincorporated areas it's the county building or planning office, or a state agency, or in some rural areas nobody. Call before you buy the lot.
  2. 02Zoning & setbacksCheck the zoning district for minimum lot size, front, side and rear setbacks, maximum height, lot coverage and whether barndominiums, ADUs or metal buildings are allowed.
  3. 03HOA & deed restrictionsSubdivisions often restrict minimum square footage, exterior materials, roof pitch, garage orientation and outbuildings. These can be stricter than the town code.
  4. 04Septic & well permitsWithout city sewer or water, you'll need a percolation (perc) test and a septic permit from the county health department, plus a well permit.
  5. 05Driveway & culvert permitConnecting to a public road usually needs a driveway or culvert permit from the town, county or state DOT.
  6. 06Floodplain development permitIf any part of the lot is in a FEMA flood zone, you'll need a floodplain permit and an elevation certificate, and the lowest floor must be at or above the Base Flood Elevation plus any local freeboard.
  7. 07Energy code complianceMost jurisdictions require an energy compliance report (REScheck or similar) showing insulation, windows and HVAC meet the adopted energy code.
  8. 08Engineering stampMany building officials require a licensed engineer's seal for foundations, beams, trusses, or high wind, snow or seismic zones. Add our Engineer Stamp option at checkout.
  9. 09Utility & fire accessRural lots may need a fire-apparatus access road, a water supply for firefighting, or wildfire (WUI) defensible-space and ignition-resistant materials.
  10. 10Inspections scheduleA typical sequence is footing, foundation, framing, rough MEP, insulation and final. A certificate of occupancy is issued after final inspection.

Popular house styles in Colorado

Modern house exteriorFrom $1,300

Modern Plans in Colorado

Clean lines, flat or shed roofs, floor-to-ceiling glass and indoor-outdoor living.

Cabin & A-Frame house exteriorFrom $1,050

Cabin & A-Frame Plans in Colorado

Timber, steep A-frames and big windows made for mountain or lake lots.

Craftsman house exteriorFrom $1,250

Craftsman Plans in Colorado

Tapered columns, exposed rafter tails, stone bases and handcrafted detail.

Want something else? Browse all 12 home styles.

Colorado house plan guides

Popular house plan searches in Colorado

Delivery options for Colorado clients

Standard

10 business days

Included

Priority

5 business days

+$249

Express

3 business days

+$399

Most popular

Rush

48 hours

+$649

Super Rush

24 hours

+$949

Colorado house plan FAQ

Does Colorado have a statewide residential building code?+

No statewide residential code. Counties and cities adopt IRC editions with amendments (Denver has its own Denver Building Code).

How deep do footings need to be in Colorado?+

Typical frost depth in Colorado is 30–36 in (Front Range), 36–48 in+ (mountains). Your local building department sets the exact minimum, and footings must go below it.

Do I need an engineer's stamp to build in Colorado?+

Many Colorado counties and cities require stamped structural drawings, especially for larger homes or homes in special hazard zones. Add our Colorado Engineer Stamp / Permit-Ready package ($750) at checkout, and always confirm with your local building department.

What climate zone is Colorado in?+

Colorado falls in IECC climate zone 4–7. We size insulation, windows and wall assemblies to match, and we can include REScheck energy calculations.

What foundation is best for a house in Colorado?+

Crawlspace or basement, depending on soil and lot slope. We'll recommend the right option for your lot and soil, and you can change it at any time during revisions.

How fast can I get house plans for my Colorado lot?+

Standard delivery is 10 business days. Rush (48 hours) and Super Rush (24 hours) are available, with free revisions for 30 days.

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