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Waterproofing in Lafayette

Licensed waterproofing services for Lafayette 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 Lafayette, Colorado

Autotelic provides professional waterproofing services throughout Lafayette 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 Lafayette (east Boulder County) or nearby communities, our team delivers quality workmanship backed by Colorado licensing and full insurance coverage.

Permit Thresholds

Lafayette permit thresholds

Code reference
This follows the City’s adopted codes (primarily the 2021 International Residential Code with local amendments in the 2023 Lafayette Colorado Building Code, effective August 1, 2023).
Code reference
Exempt work (from building permit requirements, per the City’s website and 2023 Lafayette Colorado Building Code amendments to IRC Section R105.2 / equivalent) includes (non-exhaustive list relevant to remodels):Section R105.2
Code reference
One-story detached accessory storage sheds under 120 sq ft.
Code reference
Retaining walls under 3 ft high (measured from bottom of footing to top of wall, unless supporting a surcharge).
Code reference
Sidewalks, driveways, and patios less than 30 inches above adjacent grade and not part of an accessible route.
Code reference
Window awnings projecting no more than 54 inches from a residence (no additional support required).
Construction use tax
Any person obtaining a building permit must pay a use tax deposit of 3.87% on 60% of the value of the permit (per Sec. 110-37 of the Municipal Code).Sec. 110-37

Codes are amended regularly — verify current requirements with **City of Lafayette, Colorado Building Division (part of the Planning & Building Department) issues residential building permits within city limits.

Energy Code

Lafayette energy code quick facts

Code reference
2021 IECC (residential and commercial provisions) with local amendments, as adopted in the 2023 Lafayette, Colorado Building Code (effective August 1, 2023).
Code reference
This is confirmed on the City’s official Building Code & Design Information page and in the adopted code document (which includes Article 9 amendments to the 2021 IECC).
Code reference
The base prescriptive requirements follow the 2021 IECC (Climate Zone 5B for the Lafayette area).
Code reference
The City is in the process of considering 2024 I-Codes (including a Metro Cohort Model Code based on the 2024 IECC) but has not yet adopted them.
Key prescriptive requirements relevant to remodels/additions (drawn from the 202
Key prescriptive requirements relevant to remodels/additions (drawn from the 2021 IECC as adopted/amended locally; specific numeric values and sections are from the base 2021 IECC unless locally modified in Article 9 of the 2023 Lafayette code—local amendments focus more on electrification/solar
Wall insulation (wood-frame above-grade)
R-20 + R-5 ci or R-13 + R-10 ci (2021 IECC Table R402.1.2 / prescriptive path; applies to additions and alterations per R503).
Ceiling/attic insulation
R-49 (or higher per table footnotes; 2021 IECC Table R402.1.2; relevant for additions and certain alterations).
Fenestration (windows/doors)
Maximum U-factor typically 0.30 (or as specified in Table R402.1.2 for CZ 5; SHGC requirements also apply; relevant for replacement windows in remodels).

Codes are amended regularly — verify current requirements with **City of Lafayette, Colorado Building Division (part of the Planning & Building Department) issues residential building permits within city limits.

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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 Lafayette and Boulder County

We serve Lafayette, 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 Lafayette project.

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