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LONE TREE SERVICES

Excavation in Lone Tree

Licensed excavation services for Lone Tree and Douglas County. Groundwork done right.

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Excavation

Groundwork done right

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Local Service

Excavation Services in Lone Tree, Colorado

Autotelic provides professional excavation services throughout Lone Tree and the surrounding Douglas County area. Foundation excavation, utility trenching, grading, and backfill services for residential and commercial construction. Whether you're in Lone Tree (Park Meadows and RidgeGate) or nearby communities, our team delivers quality workmanship backed by Colorado licensing and full insurance coverage.

Permit Thresholds

Lone Tree permit thresholds

Code reference
This aligns with the adopted 2021 International Residential Code (IRC) and amendments (along with other 2021 I-Codes and the 2023 National Electrical Code), as set forth in the City’s municipal code Chapter 18 (Building Regulations).
Building
Fences under 7 feet tall; retaining walls under 4 feet; concrete walks, patios, and driveways; painting; swings/playground equipment; same-size window replacements (like-for-like size; changing opening size requires a permit).
Code reference
Re-roofing generally requires a permit when replacing more than 1 square (100 sq ft).
Code reference
Emergency repairs allow a 24-hour grace period to apply.
Code reference
No use tax, building permit valuation-based tax, or similar rate (with or without a basis such as “applied to X% of valuation”) is specified in Lone Tree’s publicly available building department materials.

Codes are amended regularly — verify current requirements with **The City of Lone Tree Building Division (part of the City of Lone Tree Community Development Department) issues residential building permits.

Energy Code

Lone Tree energy code quick facts

Code reference
2021 International Energy Conservation Code (IECC) with local amendments (per City of Lone Tree Municipal Code Chapter 18, adopted via Ordinance No. 22-07, Series of 2022).Ordinance No. 22-07
Code reference
Lone Tree (Douglas County, climate zone 5B) adopts the 2021 IECC by reference with amendments as part of its building regulations.
Code reference
State law (HB 22-1362 and related provisions) requires jurisdictions updating building codes to adopt at least the 2021 IECC plus the Colorado Model Electric Ready and Solar Ready Code (with amendments that cannot reduce stringency).
Code reference
Key prescriptive requirements relevant to remodels/additions (drawn from the base 2021 IECC for CZ 5B, as specific local numeric energy amendments are not detailed in available municipal sources beyond the general adoption; confirm with the Building Division for exact local tweaks):
Wall insulation
R-20 or 13+5 ci (continuous insulation) for wood-frame walls (2021 IECC Table R402.1.2 or equivalent prescriptive path).
Ceiling/attic insulation
R-49 (2021 IECC Table R402.1.2).
Air leakage/air-sealing
≤ 3 ACH50 (air changes per hour at 50 Pascals) with blower-door testing required for verification (2021 IECC R402.4; state baseline aligns with this).
Fenestration U-factor
Maximum 0.30 for windows (or as per prescriptive table; SHGC requirements also apply in CZ 5).
Ordinance No. 22-07Source: cityoflonetree.com

Codes are amended regularly — verify current requirements with **The City of Lone Tree Building Division (part of the City of Lone Tree Community Development Department) issues residential building permits.

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What excavation work covers

Excavation in the Denver metro includes foundation cut, site grading, utility trenches, benching, sloping, and shoring when soils or lot-line conditions require it. Neighboring structures, utilities, and the public right-of-way often drive method. A municipally licensed Denver general contractor coordinates earthwork and licensed specialty trades. Cost is project-specific and depends on depth, soils, and protection of adjacent property.

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When shoring and extra permits show up

Denver CPD commonly treats excavation, benching, or shoring as a separate permit when the cut is more than 4 feet deep, closer than 4 feet to a lot line, or steeper than 1.5 horizontal to 1 vertical. IRC houses follow building-code policy ADMIN 130/131 and DCBC 3307; those details often ride with the residential construction permit, with excavation issued first. Shoring and soils packages are typically sealed by design professionals. Work that abuts the public ROW may need a DOTI excavation bond; shoring that enters the ROW needs a temporary shoring ROW permit.

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Permits and who coordinates the work

City and County of Denver Community Planning and Development reviews excavation and shoring. Denver DOTI reviews Sewer Use and Drainage (SUDP) for excavations, grading, floodplain, groundwater, and ROW impacts. The residential permitting guide also calls for DDPHE review on excavations. Check floodplain status at denvergov.org/flood before drawing. Cities and counties license general contractors. Colorado has no statewide general contractor license. Autotelic acts as a municipally licensed Denver general contractor and coordinates licensed specialty trades for excavation scopes.

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What buyers should prepare

Proposed depth, distance to lot lines, any soils report, photos of neighboring structures, and whether the dig will touch the alley or street.

FAQ

Common questions

Do I need a separate excavation permit in Denver?

Often yes when the cut is over 4 feet deep, close to a lot line, or steeper than 1.5 to 1. Houses may include excavation details with the building permit, with excavation issued before construction.

Who handles excavation permits and licensing?

A municipally licensed Denver general contractor coordinates the project and licensed specialty trades. Colorado has no statewide general contractor license.

What is SUDP doing on a dig?

DOTI reviews sewer, storm grading, floodplain, groundwater, and ROW impacts for excavations. It is a separate review that typically runs with the building package.

When is shoring required?

When slopes cannot be laid back to the allowed ratio, when the cut is near a lot line or structure, or when the soils report requires it. Design professionals seal those packages.

What information helps define scope?

Depth, lot-line clearance, floodplain status, existing utilities, and city or county.

Service Area

Serving Lone Tree and Douglas County

We serve Lone Tree, CO and all surrounding Denver metro communities. Our team is based in Denver and operates throughout the Front Range, from Castle Rock to Longmont and everywhere in between. Contact us for a free estimate on your Lone Tree project.

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