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Waterproofing in Louisville

Licensed waterproofing services for Louisville and Boulder County. Keep water where it belongs.

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Waterproofing

Keep water where it belongs

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Local Service

Waterproofing Services in Louisville, Colorado

Autotelic provides professional waterproofing services throughout Louisville and the surrounding Boulder County area. Foundation waterproofing, basement sealing, drain tile systems, and sump pump installation for dry, protected spaces. Whether you're in Louisville (between Denver and Boulder) or nearby communities, our team delivers quality workmanship backed by Colorado licensing and full insurance coverage.

Permit Thresholds

Louisville permit thresholds

Code/municipal code sections
Louisville Municipal Code Chapter 15 (Buildings and Construction), which incorporates the 2024 ICC codes (IBC, IRC, IECC, IEBC, etc., effective December 6, 2025) with local amendments via Ordinance 2025-1907 (No. 1907-2025).Ordinance 2025-1907
Building permit fee follows a progressive table (e.g., $0–$500
$28; higher brackets up to $1M+ with per-$1,000 increments; exact amounts per the published schedule).
Plan review (in-house)
65% of the building fee.
Boulder County Use Tax
1.185% of 50% of Total Valuation.
City of Louisville Use Tax
3.775% of 50% of Total Valuation.
Code reference
Impact fees may apply for additions or remodels increasing finished floor area over 500 sq ft (per category tables; first 500 sq ft often exempt).
Ordinance 2025-1907Source: louisvilleco.gov

Codes are amended regularly — verify current requirements with **The City of Louisville, Colorado’s Building Safety Division (part of the city government) issues residential building permits.

Energy Code

Louisville energy code quick facts

Code reference
2024 International Energy Conservation Code (IECC), effective December 6, 2025 (adopted via the City of Louisville’s 2024 ICC Code Adoption ordinance), along with the Colorado Model Electric Ready and Solar Ready Code (also effective 12/6/25).
Code reference
Louisville is in Climate Zone 5B.
Code reference
The 2024 IECC (with the model ready codes) applies to new construction and, via Chapter 5 [RE], to additions, alterations, and remodels involving the building thermal envelope.
Code reference
Key prescriptive requirements relevant to remodels/additions (drawn from 2024 IECC Table R402.1.2 and related sections for CZ 5 / 5B; additions must meet these for new envelope areas or the whole-building UA alternative):
Ceiling/attic insulation
Maximum assembly U-factor 0.026 (2024 IECC Table R402.1.2).
Wood-frame wall insulation
Maximum assembly U-factor 0.045 (or equivalent prescriptive R-value combinations such as R-20 + R-5ci or R-13 + R-10ci; note R408 tradeoffs may allow reduced wall performance with additional measures) (2024 IECC Table R402.1.2 and R408).
Vertical fenestration (windows/doors)
Maximum U-factor 0.28 (2024 IECC Table R402.1.2).
Skylights
Maximum U-factor 0.50 (2024 IECC Table R402.1.2).

Codes are amended regularly — verify current requirements with **The City of Louisville, Colorado’s Building Safety Division (part of the city government) issues residential building permits.

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What waterproofing work covers

Waterproofing in the Denver metro usually means below-grade work: exterior membrane and drainage after excavation, or interior drain tile and a sump. Grading and downspout discharge matter as much as the membrane. This is not roofing. A municipally licensed Denver general contractor coordinates the project and licensed specialty trades. Cost is project-specific and depends on interior versus exterior access, depth, and groundwater.

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Excavation, groundwater, and floodplain

Exterior work is an excavation. Denver DOTI reviews Sewer Use and Drainage (SUDP) for excavations, storm grading, floodplain, and groundwater. Groundwater dewatering has its own SUDP path. Check floodplain status at denvergov.org/flood before drawing. If the work includes underpinning, a basement dig-out, or foundation repair beyond IRC prescriptive limits, City and County of Denver Community Planning and Development requires structural drawings and calculations (DBCA 133.2).

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Permits and who coordinates the work

CPD building permits apply when structure or occupancy is affected. DOTI SUDP applies to the excavation and drainage. 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 waterproofing scopes.

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What buyers should prepare

Where water enters, interior versus exterior access, existing sump yes or no, and neighboring foundation proximity.

FAQ

Common questions

Does foundation waterproofing need a Denver permit?

Exterior excavation typically needs SUDP and often a building permit. Interior drain tile may still need permits if plumbing or structure changes.

Who handles waterproofing permits and licensing?

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

Interior drain or exterior membrane?

Exterior treats the wall from outside when there is room to excavate. Interior drain tile collects water that already reaches the slab. Site conditions decide.

When is structural review required?

When underpinning, basement dig-outs, or foundation repair go beyond IRC prescriptive limits. CPD asks for sealed drawings and calculations.

What information helps define scope?

Water-entry photos, floodplain status, lot-line clearance, and city or county.

Service Area

Serving Louisville and Boulder County

We serve Louisville, 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 Louisville project.

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