This is PermitBase’s published record for Lone Tree as of 2026-07-06. It has since been superseded — see the current record. A historical record reflects what PermitBase had verified at that time; it may not capture a real-world change the jurisdiction had made but PermitBase had not yet verified, and it includes any errors we later corrected. Snapshots are never edited retroactively.
Lone Tree building permits
Lone Tree, Colorado — as published 2026-07-06.
Reviewed 2026-07-06 · Source
Codes adopted
Permit types & fees
Residential Building Permit (New Construction)
VerifiedRequired for new construction of single-family homes and duplexes in the City of Lone Tree. Reviewed under the 2021 IRC/IBC as locally adopted (Chapter 18 of the Lone Tree Municipal Code), plus the City's published Design Criteria (30 psf ground snow load, 115 mph ULT wind/Exposure C, 36-inch frost depth, Seismic Design Category B). Issued by the Community Development Department, Building Division.
Verified 2026-07-06 · Source
Requirements
- Plans must comply with the 2021 IRC/IBC as adopted, and meet the City's Design Criteria: 30 psf ground snow load, 115 mph ULT wind speed (Exposure C), Seismic Design Category B, 36-inch minimum frost depth for foundations
- Local amendment Section 105.3.8: a soils test of the building site, prepared by a Colorado-registered professional engineer, must be submitted with the permit application; an engineering geologist's report may additionally be required for hillside or geologically hazardous/steep-slope sites at the Building Official's discretion
- If the site falls within a mapped fire-intensity zone under the Colorado Wildfire Resiliency Code, Class I or Class II wildfire mitigation requirements apply to new construction
- Applicant must provide an estimated total permit value (materials plus labor) at application; the Building Official may deny an application judged to understate valuation absent supporting detailed estimates
- Applications submitted exclusively via the City's Accela Citizen Access online portal
- City Use Tax (2.5%) collected on construction materials before permit issuance, per Lone Tree Municipal Code Ch. 4, Art. III, Sec. 120
Required documents
- RequiredBuilding Permit ApplicationSubmitted through the City of Lone Tree Accela Citizen Access portal
- RequiredSoils Test ReportPrepared by a Colorado-registered professional engineer, per IBC Section 105.3.8 as locally amended
- OptionalEngineering Geologist ReportRequired for hillside sites or sites the Building Official determines are subject to geological hazards or steep slopes
- RequiredConstruction Plan SetStamped plans demonstrating compliance with the 2021 IRC/IBC as adopted and the City's Design Criteria
Fee schedule
| Fee type | Amount | Notes |
|---|---|---|
| Building/Mechanical/Electrical/Plumbing Permit Fee — valuation $1.00 to $500.00 | $23.50 | 2026 Building Division Fee Schedule, effective 01/01/2026 |
| Permit Fee — valuation $501.00 to $2,000.00 | $23.50 for the first $500 plus $3.05 for each additional $100 or fraction thereof, to and including $2,000.00 | — |
| Permit Fee — valuation $2,001.00 to $25,000.00 | $69.25 for the first $2,000 plus $14.00 for each additional $1,000 or fraction thereof, to and including $25,000.00 | — |
| Permit Fee — valuation $25,001.00 to $50,000.00 | $391.75 for the first $25,000 plus $10.10 for each additional $1,000 or fraction thereof, to and including $50,000.00 | — |
| Permit Fee — valuation $50,001.00 to $100,000.00 | $643.75 for the first $50,000 plus $7.00 for each additional $1,000 or fraction thereof, to and including $100,000.00 | — |
| Permit Fee — valuation $100,001.00 to $500,000.00 | $993.75 for the first $100,000 plus $5.60 for each additional $1,000 or fraction thereof, to and including $500,000.00 | — |
| Permit Fee — valuation $500,001.00 to $1,000,000.00 | $3,233.75 for the first $500,000 plus $4.75 for each additional $1,000 or fraction thereof, to and including $1,000,000.00 | — |
| Permit Fee — valuation $1,000,001.00 and up | $5,608.75 for the first $1,000,000 plus $3.65 for each additional $1,000 or fraction thereof | — |
| Plan Review Fee | 65% of the Building Permit Fee, minimum $100.00 | Due at time of building permit application |
| City Use Tax | 2.5% of construction materials value | Per Lone Tree Municipal Code Ch. 4, Art. III, Sec. 120; collected before permit issuance |
| Cherry Creek Basin Water Quality Authority Fee | Varies, set annually by the Authority | Collected at building permit issuance if applicable to the parcel |
Residential Addition / Remodel Permit (including Basement Finish)
VerifiedRequired for additions, basement finishes, and interior remodels to existing residential structures in Lone Tree. Reviewed under the 2021 IRC as locally adopted. The City's own guidance explicitly names 'basement finish' and 'additions' as permit-triggering work.
Verified 2026-07-06 · Source
Requirements
- Permit required for additions, basement finish, and any structural alteration of an existing residential structure
- Additions of 500+ square feet, or exterior wall replacement/repair of 25% or more, trigger Colorado Wildfire Resiliency Code mitigation if the parcel is in a mapped fire-intensity zone
- A soils test (Colorado-registered PE) may be required at the Building Official's discretion depending on scope, per the same IBC 105.3.8 local amendment applied to new construction
- Applications submitted via the Accela Citizen Access online portal
Required documents
- RequiredBuilding Permit ApplicationSubmitted via the City of Lone Tree Accela Citizen Access portal
- RequiredConstruction Plan SetPlans showing scope of addition, basement finish, or remodel work, demonstrating compliance with the 2021 IRC as adopted
Fee schedule
| Fee type | Amount | Notes |
|---|---|---|
| Building/Mechanical/Electrical/Plumbing Permit Fee (same valuation-based schedule as new construction) | $23.50 minimum, scaling per the valuation tiers in the 2026 Building Fees schedule | 2026 Building Division Fee Schedule |
| Plan Review Fee | 65% of Permit Fee, minimum $100.00 | — |
| City Use Tax | 2.5% of construction materials value | — |
Electrical Permit
Required for installation, alteration, or repair of electrical systems in Lone Tree. Issued directly by the City's Building Division as part of its combined Building/Mechanical/Electrical/Plumbing permit program (not deferred to the Colorado State Electrical Board). Governed by the 2023 NEC as adopted. Contractors must hold current Colorado State Electrical Board (DORA) licensure as a matter of state law, in addition to the City permit.
Reviewed 2026-07-06 · Source
Requirements
- Governed by the 2023 NEC as adopted by the City of Lone Tree
- Billed from the same shared valuation-based fee table as Building/Mechanical/Plumbing permits (not a separate state-anchored fee schedule)
- Homeowners may perform electrical work on their own primary residence without a license per Colorado/Douglas-area practice; all other electrical installations require a contractor licensed by the Colorado State Electrical Board (DORA)
- Exempt from permit: temporary plug-in lighting/devices/equipment, and replacement of receptacles, switches, and lights
Required documents
- RequiredBuilding Permit Application (Electrical scope)Submitted via the City of Lone Tree Accela Citizen Access portal
Fee schedule
| Fee type | Amount | Notes |
|---|---|---|
| Electrical Permit Fee (same valuation-based schedule as Building/Mechanical/Plumbing) | $23.50 minimum, scaling per the valuation tiers in the 2026 Building Fees schedule | 2026 Building Division Fee Schedule; billed under the single shared 'Building, Mechanical, Electrical and Plumbing Permit Fees for All Occupancies' table, not a separate DORA-anchored schedule |
| Plan Review Fee | 65% of Permit Fee, minimum $100.00 | — |
| Douglas County Use Tax | Not collected on electrical-only permits/projects | Explicit fee-schedule exemption; City Use Tax (2.5%) may still apply per City ordinance |
Plumbing Permit
Required for installation, alteration, or repair of plumbing systems in Lone Tree, issued directly by the City's Building Division as part of its combined permit program. Governed by the 2021 International Plumbing Code (IPC) as adopted. Contractors must hold current Colorado State Plumbing Board (DORA) licensure as a matter of state law, in addition to the City permit.
Reviewed 2026-07-06 · Source
Requirements
- Governed by the 2021 IPC as adopted by the City of Lone Tree
- Billed from the same shared valuation-based fee table as Building/Mechanical/Electrical permits
- Sewer line repairs within the home explicitly require a permit per the City's Do I Need a Building Permit guidance
- Exempt from permit: clearing stoppages or repairing leaks in drains/supply lines, and replacing fixtures, sinks, toilets, and shutoff valves
Required documents
- RequiredBuilding Permit Application (Plumbing scope)Submitted via the City of Lone Tree Accela Citizen Access portal
Fee schedule
| Fee type | Amount | Notes |
|---|---|---|
| Plumbing Permit Fee (same valuation-based schedule as Building/Mechanical/Electrical) | $23.50 minimum, scaling per the valuation tiers in the 2026 Building Fees schedule | 2026 Building Division Fee Schedule |
| Plan Review Fee | 65% of Permit Fee, minimum $100.00 | — |
| Douglas County Use Tax | Not collected on plumbing-only permits/projects | — |
Mechanical / HVAC Permit
VerifiedRequired for heating, cooling, and ventilation equipment installation or replacement in Lone Tree, including air conditioners, furnaces, and water heaters. Governed by the 2021 International Mechanical Code (IMC) and 2021 International Fuel Gas Code (IFGC) as adopted. Douglas County Use Tax is explicitly waived on mechanical-only permits.
Verified 2026-07-06 · Source
Requirements
- Governed by the 2021 IMC and 2021 IFGC as adopted by the City of Lone Tree
- Air conditioners, new furnaces, and water heaters are explicitly named by the City as requiring a permit
- Billed from the same shared valuation-based fee table as Building/Electrical/Plumbing permits
- Douglas County Use Tax not collected on mechanical-only permits/projects (examples given: air conditioners, furnaces, water heaters, gas lines)
Required documents
- RequiredBuilding Permit Application (Mechanical scope)Submitted via the City of Lone Tree Accela Citizen Access portal
Fee schedule
| Fee type | Amount | Notes |
|---|---|---|
| Mechanical Permit Fee (same valuation-based schedule as Building/Electrical/Plumbing) | $23.50 minimum, scaling per the valuation tiers in the 2026 Building Fees schedule | 2026 Building Division Fee Schedule |
| Plan Review Fee | 65% of Permit Fee, minimum $100.00 | — |
| Douglas County Use Tax | Not collected on mechanical-only permits/projects | — |
Furnace / Water Heater Replacement Permit
VerifiedA narrower permit scope for like-for-like replacement of a residential furnace or water heater, explicitly named by the City as requiring a permit (distinct from the broader mechanical/HVAC permit type, which also covers new installations such as air conditioners). Billed under the same shared valuation-based Building/Mechanical/Electrical/Plumbing fee table; exempt from Douglas County Use Tax.
Verified 2026-07-06 · Source
Requirements
- Explicitly named by the City ('new furnaces and water heaters') as permit-triggering work under Do I Need a Building Permit guidance
- Governed by the 2021 IMC/IFGC as adopted
- Douglas County Use Tax not collected on this permit type (examples explicitly listed: furnaces and water heaters)
Required documents
- RequiredBuilding Permit Application (Mechanical/Replacement scope)Submitted via the City of Lone Tree Accela Citizen Access portal
Fee schedule
| Fee type | Amount | Notes |
|---|---|---|
| Permit Fee (same valuation-based schedule as Building/Mechanical/Electrical/Plumbing) | $23.50 minimum, scaling per the valuation tiers in the 2026 Building Fees schedule | 2026 Building Division Fee Schedule |
| Plan Review Fee | 65% of Permit Fee, minimum $100.00 | — |
| Douglas County Use Tax | Not collected on furnace or water heater replacement permits | — |
Roofing Permit (Re-Roof)
VerifiedRequired when replacing more than 1 square (100 sq ft) of roofing in Lone Tree. Governed by the 2021 IRC/IBC as adopted; notably, ice and water (ice barrier) underlayment is explicitly NOT required by the City, unlike many mountain-corridor Colorado jurisdictions.
Verified 2026-07-06 · Source
Requirements
- Required whenever replacing more than 1 square (100 sq ft) of roofing
- Partial roof replacements must terminate at a natural break (valley, eave, ridge) and may not mix materials or ages on a single slope unless manufacturer-warranted
- Minimum Class C rating required for wood shake and wood shingle roofing
- Wind clips required for concrete tile and clay tile installations
- Drip edge mandatory on all rakes and eaves
- All deteriorated flashing, drain outlets, jacks, and collars must be replaced; water-damaged or rusted decking must be replaced
- Design standards: 115 mph wind speed (Exposure C); 30 psf ground snow load; 3.0 in/hr rainfall design for 100-year events
- Ice and water (ice barrier) underlayment is explicitly NOT required by the City
- A roof replacement/repair of 25% or more triggers Colorado Wildfire Resiliency Code mitigation if the parcel is in a mapped fire-intensity zone
Required documents
- RequiredBuilding Permit Application (Roofing scope)Submitted via the City of Lone Tree Accela Citizen Access portal
- RequiredRoofing Material ScheduleDocumentation of roofing material, underlayment, and flashing specifications meeting the City's Roofing Guidelines
Fee schedule
| Fee type | Amount | Notes |
|---|---|---|
| Building Permit Fee (valuation-based, same shared schedule as new construction) | $23.50 minimum, scaling per the valuation tiers in the 2026 Building Fees schedule | No separate flat re-roof fee is published; billed under the general valuation-based fee schedule |
| Plan Review Fee | 65% of Permit Fee, minimum $100.00 | — |
Solar Electric / Solar Thermal Device Permit
VerifiedRequired for solar photovoltaic and solar thermal device installations in Lone Tree. Billed as a flat fee under the 2026 Building Division fee schedule, distinct from the valuation-based Building/Mechanical/Electrical/Plumbing table. Douglas County Use Tax is explicitly waived on photovoltaic systems.
Verified 2026-07-06 · Source
Requirements
- Billed as a flat fee, not the valuation-based Building Permit Fee table used for other trades
- Electrical connection work governed by the 2023 NEC as adopted
- Douglas County Use Tax not collected on photovoltaic systems
- Roof-mounted systems on a re-roof-eligible roof are still subject to the City's roofing material and inspection requirements where applicable
Required documents
- RequiredBuilding Permit Application (Solar scope)Submitted via the City of Lone Tree Accela Citizen Access portal
Fee schedule
| Fee type | Amount | Notes |
|---|---|---|
| Solar Electric or Solar Thermal Device Permit Fee | $480.00 flat | 2026 Building Division Fee Schedule — flat fee, not valuation-based |
| Douglas County Use Tax | Not collected on photovoltaic systems | — |
Accessory Dwelling Unit (ADU) Permit
The City of Lone Tree does not publish a dedicated ADU ordinance, zoning allowance summary, or standalone ADU permit page. An ADU project (where permitted by the applicable zone district under the Unified Development Code) would be processed as a standard Residential Addition/New Construction building permit through the Accela portal, subject to the same Design Criteria, soils-test amendment, and shared valuation-based fee table as other residential work.
Reviewed 2026-07-06 · Source
Requirements
- No dedicated ADU permit type, ordinance summary, or standalone process page could be located on the City's Building, Planning, Permits-and-Applications pages, or via a site search for 'accessory dwelling unit' — zoning allowance would be governed by the Unified Development Code and the parcel's specific zone district, which requires a zoning review with the Planning Division (720-509-1180) prior to a building-permit application
- If permitted, would be processed as a standard building permit (new construction or addition scope) subject to the same 2021 IRC/IBC-based requirements, soils test (Section 105.3.8 amendment), and Design Criteria as other residential construction
- Colorado Wildfire Resiliency Code mitigation may apply if the ADU adds 500+ sq ft or the parcel is in a mapped fire-intensity zone
Required documents
- RequiredBuilding Permit ApplicationSubmitted via the City of Lone Tree Accela Citizen Access portal; zoning confirmation with the Planning Division recommended before submittal
Fee schedule
| Fee type | Amount | Notes |
|---|---|---|
| Permit Fee (same valuation-based schedule as new construction/additions) | $23.50 minimum, scaling per the valuation tiers in the 2026 Building Fees schedule | No ADU-specific fee line exists in the published fee schedule; billed under the general Building Permit Fee table |
| Plan Review Fee | 65% of Permit Fee, minimum $100.00 | — |
Demolition Permit
VerifiedRequired to demolish, or otherwise change/remove, any building or structure in Lone Tree. Billed as a flat fee under the 2026 Building Division fee schedule.
Verified 2026-07-06 · Source
Requirements
- Required whenever a project will 'demolish, or change any building or structure,' per the City's Do I Need a Building Permit guidance
- Billed as a flat fee, not the valuation-based table used for most other trades
Required documents
- RequiredDemolition Permit ApplicationSubmitted via the City of Lone Tree Accela Citizen Access portal
Fee schedule
| Fee type | Amount | Notes |
|---|---|---|
| Demolition Permit Fee | $100.00 flat | 2026 Building Division Fee Schedule |
Commercial Tenant Improvement Permit
The City of Lone Tree does not publish a dedicated Tenant Improvement (TI) permit page or process summary distinct from its general commercial Building Permit. A commercial TI project would be filed as a standard Building Permit application through the Accela portal, subject to the 2021 IBC as adopted and the same shared valuation-based fee table used for all occupancies.
Reviewed 2026-07-06 · Source
Requirements
- No standalone TI permit type, application form, or process page could be located on the City's Building, Permits-and-Applications, or Licenses pages — modeled here as a scoped application of the general commercial Building Permit
- Governed by the 2021 IBC as adopted, plus applicable fire and accessibility code requirements (2021 IFC, 2017 ICC A117.1)
- A Business License (or Retail Sales & Use Tax License) is required for the tenant/business operating in the space, separate from the construction permit itself
Required documents
- RequiredBuilding Permit Application (Commercial/TI scope)Submitted via the City of Lone Tree Accela Citizen Access portal
- RequiredBusiness License ApplicationRequired for the operating business, separate from the construction permit
Fee schedule
| Fee type | Amount | Notes |
|---|---|---|
| Building/Mechanical/Electrical/Plumbing Permit Fee (same shared valuation-based schedule 'for All Occupancies') | $23.50 minimum, scaling per the valuation tiers in the 2026 Building Fees schedule | 2026 Building Division Fee Schedule explicitly covers 'All Occupancies' under one table, including commercial |
| Plan Review Fee | 65% of Permit Fee, minimum $100.00 | — |
| City Use Tax | 2.5% of construction materials value | — |
Deck / Patio Cover Permit
VerifiedRequired for decks and patio covers in Lone Tree, explicitly named by the City as permit-triggering work (distinct from exempt concrete patios and driveways at grade). Governed by the 2021 IRC as adopted and the City's Design Criteria for structural loading.
Verified 2026-07-06 · Source
Requirements
- Explicitly required per the City's Do I Need a Building Permit guidance: 'Decks and Patio Covers'
- Concrete walks, patios, and driveways (at-grade, no structure) are exempt from permit — the distinction is structural elevation/cover, not general 'patio' work
- Structural design must meet the City's Design Criteria: 30 psf ground snow load, 115 mph ULT wind (Exposure C), 36-inch minimum frost depth for footings
Required documents
- RequiredBuilding Permit Application (Deck/Patio Cover scope)Submitted via the City of Lone Tree Accela Citizen Access portal
- RequiredDeck/Patio Cover PlanFraming plan, footing details, and connection details meeting the City's Design Criteria
Fee schedule
| Fee type | Amount | Notes |
|---|---|---|
| Building Permit Fee (valuation-based, same shared schedule) | $23.50 minimum, scaling per the valuation tiers in the 2026 Building Fees schedule | No separate flat deck/patio-cover fee is published; billed under the general valuation-based schedule |
| Plan Review Fee | 65% of Permit Fee, minimum $100.00 | — |
Sources & verification
Key facts verified against official sources. Last reviewed 2026-07-06.
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 Lone Tree building department before you submit. PermitBase is an independent reference and is not affiliated with any government agency.