Skip to main content
PermitBase

Residential Addition / Remodel Permit in Littleton, Colorado

Required for room additions, basement finishes, and structural modifications to existing residential dwellings in Littleton. Reviewed under the 2024 IRC as locally amended, using the City's Residential Remodel submittal track (distinct from the New SFD/Addition/ADU track for ground-up structural work).

Verified 2026-07-05 · Source

When you need this permit

  • Applicable codes must be notated on plans; 'preliminary' or 'not for construction' plans are not accepted
  • Existing and proposed floor plans required, including north arrow, room use/size, ceiling heights, door/window sizes and locations, stairway rise/run/handrail/headroom details
  • Any alteration of foundation or structural components requires a plan/detailed drawing stamped by a structural engineer at time of application; the engineer of record (or representative) must inspect and verify the alteration prior to final Building Division approval
  • Basement finishes must show beam/ductwork locations and finished-floor-to-beam/ductwork clearance heights
  • Electrical plans must show receptacles, switches, lighting, smoke alarms, ventilation fans, and service size/location
  • Manual J, S, and D calculations required if the heating system is replaced or ductwork is replaced/relocated/altered
  • IECC compliance documentation may be required depending on scope (thermal envelope, mechanical, or electrical system impact)
  • All documents submitted electronically via eTRAKiT

Required documents

Check off what you have — your progress is saved on this device.

Not ready yet — 0 of 2 required documents checked.

This checker covers one permit. A full project usually triggers several — our paid checklist will assemble all of them, from $29 →

Fee schedule

Building Permit Fee (same valuation-based table as new construction)
$25.85 minimum, scaling per the valuation tiers in the Permit Fee Schedule (Resolution 2025-105)
Plan Review Fee
65% of the Permit Fee
City Use Tax Deposit
0.01969 x Total Job Valuation
Arapahoe County Open Space Tax
0.00125 x Total Valuation

Review timeline

Plan review
Not published — contact the department

How long did your Residential Addition / Remodel Permit permit actually take in Littleton?

Anonymous — one question, no email. Answers are combined and only shown once at least 5 people have reported.

Inspection process

  1. 1

    Foundation (if new footings/alteration)

    Structural engineer of record must verify any foundation alteration before Building Division final approval

  2. 2

    Rough Plumbing / Electrical / Heating

    Trade rough-ins before concealment; all must be approved before rough framing inspection

  3. 3

    Rough Framing

    Framing, sub-flooring, stairs complete before cover

  4. 4

    Final Inspection

    All work complete per approved plans

See the full Littleton inspection guide — scheduling & re-inspection fees →

Tips

  • Basement finishes require a permit in Littleton and must document beam/ductwork clearance heights on the plan set — don't treat interior remodels as automatically exempt.
  • If your remodel replaces or relocates the heating system or ductwork, budget time to produce Manual J/S/D calculations before submittal — the City requires these up front, not after review comments.

Frequently asked questions

Only if the project alters the foundation or other structural components. The engineer of record (or their representative) must also inspect and verify the alteration in the field before the Building Division grants final approval.

In Littleton, the published Building Permit Fee (same valuation-based table as new construction) is: $25.85 minimum, scaling per the valuation tiers in the Permit Fee Schedule (Resolution 2025-105). Additional published fees: Plan Review Fee — 65% of the Permit Fee; City Use Tax Deposit — 0.01969 x Total Job Valuation; Arapahoe County Open Space Tax — 0.00125 x Total Valuation. These are the jurisdiction's own published figures — see the fee schedule table and source citations on this page.

Littleton does not publish a plan-review timeline for this permit. Contact City of Littleton Building and Code Compliance Division (Community Development Department, Permit Center) at 303-795-3751 for current turnaround.

You'll need: Building Permit Application (eTRAKiT Online System); Existing and Proposed Floor Plans. Depending on your project, Littleton may also ask for: Structural Engineer Stamped Plan (if applicable). See the required-documents checklist on this page for details on each.

Littleton requires 4 inspection(s) for a residential addition / remodel permit, in order: Foundation (if new footings/alteration), Rough Plumbing / Electrical / Heating, Rough Framing, Final Inspection. Schedule each through City of Littleton Building and Code Compliance Division (Community Development Department, Permit Center) (303-795-3751).

Apply through City of Littleton Building and Code Compliance Division (Community Development Department, Permit Center) at Littleton Center, 2255 W. Berry Avenue, Littleton, CO 80120. Phone: 303-795-3751, email: permits@littletonco.gov. Office hours: Permit Center: Monday-Thursday 8:00 a.m.-4:30 p.m., Fridays closed; in-person walk-in hours limited to Monday 1:00-4:30 p.m. (no walk-ins after 4:15 p.m.) and Thursday 8:00-11:30 a.m.; Building Inspections staff hours 7:30 a.m.-4:30 p.m. Monday-Friday. FAX 720-741-0210, eFax 720-384-0601.. Official information: https://www.littletonco.gov/Building-Development.

Littleton, Colorado has adopted: 2024 International Building Code (IBC) — City of Littleton Building Codes and Amendments page; 2024 International Residential Code (IRC); 2024 International Energy Conservation Code (IECC); 2024 International Existing Building Code (IEBC); 2024 International Fuel Gas Code (IFGC); 2024 International Mechanical Code (IMC); 2024 International Plumbing Code (IPC) — Littleton uses the International Plumbing Code, not the Uniform Plumbing Code; 2024 International Property Maintenance Code (IPMC); 2024 International Swimming Pool and Spa Code (ISPSC); 2024 International Wildland-Urban Interface Code (IWUIC); 2024 International Fire Code (IFC); ICC A117.1-2017 Standard with Supplement 1 — Accessible and Usable Buildings and Facilities; NFPA 70 National Electrical Code, 2026 Edition ("2026 NEC"); 1997 Uniform Code for the Abatement of Dangerous Buildings (International Conference of Building Officials); Colorado Model Electric Ready and Solar Ready Code, adopted by the Colorado Department of Local Affairs and Colorado Energy Office effective June 1, 2023; Littleton City Code Title 4, Chapter 1 — local IRC amendments including adopted Climatic and Geographic Design Criteria (Table R301.2): Ground Snow Load 40 psf (non-reducible), Ultimate Design Wind Speed 136 mph; Littleton City Code Title 3, Chapter 16 — Contractor Licensing (license/registration required to obtain permits within city limits, effective July 1, 1985). Local amendments apply — see the Littleton overview page for the full list.

Sources & verification

Verified against official sources. Last reviewed 2026-07-05.

Fees, timelines, and adopted codes are researched from each jurisdiction's published records — see how we verify. Requirements change and vary by project, so always confirm the current details with the Littleton building department before you submit. PermitBase is an independent reference and is not affiliated with any government agency.

Other permits in Littleton

Residential Building Permit (New Single-Family, Townhouse, Two-Family Dwelling)Electrical PermitPlumbing PermitMechanical / HVAC PermitRoofing Permit (Reroof)Residential Rooftop Solar (PV) and Energy Storage System (ESS) PermitDemolition PermitFence PermitEV Charger / Electric Vehicle Charging Station Permit

Residential Addition / Remodel Permit in other cities

Akron, ColoradoArvada, ColoradoAspen, ColoradoAult, ColoradoAurora, ColoradoAvon, ColoradoBasalt, ColoradoBennett, Colorado

Compare residential addition / remodel permit fees across Colorado →

Look up this fee in a different city →

Embed this data card →

Now live

Build your Littleton project checklist

Describe your project once and get every permit, document, and fee it triggers in Littleton — in one checklist. Sign up and pay once to generate it, or go unlimited with Pro.

Get started →