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BOULDER SERVICES

Insulation in Boulder

Licensed insulation services for Boulder and Boulder County. Energy efficiency from the inside out.

  • Full Design Lifecycle
  • Construction & Tenant Finish
  • Smart Home · A/V · Edge Compute
Insulation

Energy efficiency from the inside out

Local Service

Insulation Services in Boulder, Colorado

Autotelic provides professional insulation services throughout Boulder and the surrounding Boulder County area. Spray foam, batt, blown-in, and rigid foam insulation for walls, attics, basements, and crawl spaces. Whether you're in Boulder (home to CU Boulder) or nearby communities, our team delivers quality workmanship backed by Colorado licensing and full insurance coverage.

Permit Thresholds

Boulder permit thresholds

Exempt work (no permit required, though work must still comply with all applicab
The complete list is referenced in Boulder Revised Code (B.R.C.) 1981, Title 10, Chapter 5, Section 10-5-2 (Adoption of International Building Code with Modifications, including exemptions in section J).Section 10-5-2
Code reference
Minor drywall repairs (<1 sheet or 32 sq ft).
Code reference
One-story accessory sheds (≤120 sq ft, ≤10 ft high, no utilities/electrical/mechanical/plumbing).
Code reference
Fences ≤7 ft high.
Code reference
Flatwork (private sidewalks, patios, driveways) ≤30 inches above grade, not over a basement/story below, and not part of an accessible route.
Code reference
Playground equipment accessory to 1- or 2-family dwellings.
Code reference
Prefabricated above-ground swimming pools accessory to 1- or 2-family dwellings (<24 inches deep, ≤5,000 gallons).
Code reference
Retaining walls ≤3 ft high (measured from footing bottom to wall top), unless supporting a surcharge or impounding certain flammables.

Codes are amended regularly — verify current requirements with **City of Boulder Planning and Development Services (P&DS; specifically its Building Permits and Inspections section) issues residential building permits for properties within Boulder city limits.

Energy Code

Boulder energy code quick facts

Code reference
2024 City of Boulder Energy Conservation Code (CoBECC), effective December 1, 2024 (based on the 2024 ICC suite of codes with local amendments; all-electric requirements for new construction, additions, and major alterations).
Code reference
This applies to the City of Boulder (not unincorporated Boulder County, which follows the 2021 IECC with amendments effective July 1, 2026).
Code reference
The code emphasizes performance paths (e.g., ERI/HERS targets) for most projects but retains prescriptive options for smaller additions/remodels (≤1,000 sf for residential).
Code reference
Boulder is in Climate Zone 5B.
Code reference
Prescriptive requirements align closely with or reference 2024 IECC Table R402.1.2 (and related sections R401–R404, R407–R408) unless locally amended; projects often use performance paths due to stringency.
Code reference
Key prescriptive requirements relevant to remodels/additions (from CoBECC/2024 IECC Table R402.1.2 and related sections for CZ 5B; cite the adopting code section or CoBECC equivalent):section or
Ceiling/attic insulation
R-49 minimum (R402.1.2 / CoBECC Chapter 4 RE).
Wood-frame above-grade walls
R-20 + R-5 continuous insulation (ci), or R-13 + R-10 ci, or R-20 ci (R402.1.2 / CoBECC Chapter 4 RE).

Codes are amended regularly — verify current requirements with **City of Boulder Planning and Development Services (P&DS; specifically its Building Permits and Inspections section) issues residential building permits for properties within Boulder city limits.

Zoning & Dimensional Standards

Setback & dimensional standards in Boulder

Zone-district dimensional standards for Boulder, quoted verbatim from the Boulder Revised Code, Title 9 Land Use Code (through Ord. 8599, 2024). Knowing your lot's district — and its setbacks, height, and coverage limits — is where every feasibility conversation starts.

Asetback & dimensional standards
StandardRequirement
Front Setback (min)25' (k)
Side Interior Setback (min)15'
Side Setback Abutting Street (min)25'
Rear Setback (min)25'
Building Height (max)35'

Boulder Revised Code, Title 9 Land Use Code (through Ord. 8599, 2024) A setback standards (\u00a79-7-1 Table 7-1 Schedule of Form and Bulk Standards) — effective 2024 · View the code

BCsetback & dimensional standards
StandardRequirement
Front Setback (min)20'
Side Interior Setback (min)0' or 12'
Side Setback Abutting Street (min)15'
Rear Setback (min)20'
Building Height (max)35'; 40' (in I-zones)

Boulder Revised Code, Title 9 Land Use Code (through Ord. 8599, 2024) BC setback standards (\u00a79-7-1 Table 7-1 Schedule of Form and Bulk Standards) — effective 2024 · View the code

BCSsetback & dimensional standards
StandardRequirement
Front Setback (min)10'
Side Interior Setback (min)0' or 12'
Side Setback Abutting Street (min)10'
Rear Setback (min)20'
Building Height (max)35'

Boulder Revised Code, Title 9 Land Use Code (through Ord. 8599, 2024) BCS setback standards (\u00a79-7-1 Table 7-1 Schedule of Form and Bulk Standards) — effective 2024 · View the code

BMSsetback & dimensional standards
StandardRequirement
Front Setback (min)0' (k)
Side Interior Setback (min)0' or 5'
Side Setback Abutting Street (min)0' for first and second stories 12' for third story and above
Rear Setback (min)0'
Building Height (max)38'

Boulder Revised Code, Title 9 Land Use Code (through Ord. 8599, 2024) BMS setback standards (\u00a79-7-1 Table 7-1 Schedule of Form and Bulk Standards) — effective 2024 · View the code

BRsetback & dimensional standards
StandardRequirement
Front Setback (min)20'
Side Interior Setback (min)0' or 12'
Side Setback Abutting Street (min)15'
Rear Setback (min)20'
Building Height (max)35'; 40' (in I-zones)

Boulder Revised Code, Title 9 Land Use Code (through Ord. 8599, 2024) BR setback standards (\u00a79-7-1 Table 7-1 Schedule of Form and Bulk Standards) — effective 2024 · View the code

BT-1setback & dimensional standards
StandardRequirement
Front Setback (min)20'
Side Interior Setback (min)0' or 12'
Side Setback Abutting Street (min)15'
Rear Setback (min)20'
Building Height (max)35'; 40' (in I-zones)

Boulder Revised Code, Title 9 Land Use Code (through Ord. 8599, 2024) BT-1 setback standards (\u00a79-7-1 Table 7-1 Schedule of Form and Bulk Standards) — effective 2024 · View the code

BT-2setback & dimensional standards
StandardRequirement
Front Setback (min)20'
Side Interior Setback (min)10'
Side Setback Abutting Street (min)15'
Rear Setback (min)25'
Building Height (max)35'; 40' (in I-zones)

Boulder Revised Code, Title 9 Land Use Code (through Ord. 8599, 2024) BT-2 setback standards (\u00a79-7-1 Table 7-1 Schedule of Form and Bulk Standards) — effective 2024 · View the code

DT-1setback & dimensional standards
StandardRequirement
Front Setback (min)0' (k)
Side Interior Setback (min)0' or 12'
Side Setback Abutting Street (min)0' (k)
Rear Setback (min)15'
Building Height (max)38'

Boulder Revised Code, Title 9 Land Use Code (through Ord. 8599, 2024) DT-1 setback standards (\u00a79-7-1 Table 7-1 Schedule of Form and Bulk Standards) — effective 2024 · View the code

DT-2setback & dimensional standards
StandardRequirement
Front Setback (min)0' (k)
Side Interior Setback (min)0' or 12'
Side Setback Abutting Street (min)0' (k)
Rear Setback (min)15'
Building Height (max)38'

Boulder Revised Code, Title 9 Land Use Code (through Ord. 8599, 2024) DT-2 setback standards (\u00a79-7-1 Table 7-1 Schedule of Form and Bulk Standards) — effective 2024 · View the code

DT-3setback & dimensional standards
StandardRequirement
Front Setback (min)0' (k)
Side Interior Setback (min)0' or 12'
Side Setback Abutting Street (min)0' (k)
Rear Setback (min)15'
Building Height (max)38'

Boulder Revised Code, Title 9 Land Use Code (through Ord. 8599, 2024) DT-3 setback standards (\u00a79-7-1 Table 7-1 Schedule of Form and Bulk Standards) — effective 2024 · View the code

DT-4setback & dimensional standards
StandardRequirement
Front Setback (min)0' (k)
Side Interior Setback (min)0' or 12'
Side Setback Abutting Street (min)0'
Rear Setback (min)15'
Building Height (max)38'

Boulder Revised Code, Title 9 Land Use Code (through Ord. 8599, 2024) DT-4 setback standards (\u00a79-7-1 Table 7-1 Schedule of Form and Bulk Standards) — effective 2024 · View the code

DT-5setback & dimensional standards
StandardRequirement
Front Setback (min)0' (k)
Side Interior Setback (min)0' or 12'
Side Setback Abutting Street (min)0' (k)
Rear Setback (min)15'
Building Height (max)38'

Boulder Revised Code, Title 9 Land Use Code (through Ord. 8599, 2024) DT-5 setback standards (\u00a79-7-1 Table 7-1 Schedule of Form and Bulk Standards) — effective 2024 · View the code

IGsetback & dimensional standards
StandardRequirement
Front Setback (min)20'
Side Interior Setback (min)0' or 12'
Side Setback Abutting Street (min)15'
Rear Setback (min)20'
Building Height (max)35'; 40' (in I-zones)

Boulder Revised Code, Title 9 Land Use Code (through Ord. 8599, 2024) IG setback standards (\u00a79-7-1 Table 7-1 Schedule of Form and Bulk Standards) — effective 2024 · View the code

IMsetback & dimensional standards
StandardRequirement
Front Setback (min)20'
Side Interior Setback (min)0' or 12'
Side Setback Abutting Street (min)15'
Rear Setback (min)20'
Building Height (max)35'; 40' (in I-zones)

Boulder Revised Code, Title 9 Land Use Code (through Ord. 8599, 2024) IM setback standards (\u00a79-7-1 Table 7-1 Schedule of Form and Bulk Standards) — effective 2024 · View the code

IMSsetback & dimensional standards
StandardRequirement
Front Setback (min)0' (k)
Side Interior Setback (min)0' or 5'
Side Setback Abutting Street (min)0'
Rear Setback (min)10'
Building Height (max)35'

Boulder Revised Code, Title 9 Land Use Code (through Ord. 8599, 2024) IMS setback standards (\u00a79-7-1 Table 7-1 Schedule of Form and Bulk Standards) — effective 2024 · View the code

IS-1setback & dimensional standards
StandardRequirement
Front Setback (min)20'
Side Interior Setback (min)0' or 12'
Side Setback Abutting Street (min)15'
Rear Setback (min)20'
Building Height (max)35'; 40' (in I-zones)

Boulder Revised Code, Title 9 Land Use Code (through Ord. 8599, 2024) IS-1 setback standards (\u00a79-7-1 Table 7-1 Schedule of Form and Bulk Standards) — effective 2024 · View the code

IS-2setback & dimensional standards
StandardRequirement
Front Setback (min)20'
Side Interior Setback (min)0' or 12'
Side Setback Abutting Street (min)15'
Rear Setback (min)20'
Building Height (max)35'; 40' (in I-zones)

Boulder Revised Code, Title 9 Land Use Code (through Ord. 8599, 2024) IS-2 setback standards (\u00a79-7-1 Table 7-1 Schedule of Form and Bulk Standards) — effective 2024 · View the code

MHsetback & dimensional standards
StandardRequirement
Front Setback (min)See section 9-7-13
Side Interior Setback (min)See section 9-7-13
Rear Setback (min)See section 9-7-13
Building Height (max)35'

Boulder Revised Code, Title 9 Land Use Code (through Ord. 8599, 2024) MH setback standards (\u00a79-7-1 Table 7-1 Schedule of Form and Bulk Standards) — effective 2024 · View the code

MU-1setback & dimensional standards
StandardRequirement
Front Setback (min)15'
Side Interior Setback (min)0' or 5'
Side Setback Abutting Street (min)0' or 5' (b)
Rear Setback (min)10'
Building Height (max)35'

Boulder Revised Code, Title 9 Land Use Code (through Ord. 8599, 2024) MU-1 setback standards (\u00a79-7-1 Table 7-1 Schedule of Form and Bulk Standards) — effective 2024 · View the code

MU-2setback & dimensional standards
StandardRequirement
Front Setback (min)0' (k)
Side Interior Setback (min)0' or 5'
Side Setback Abutting Street (min)0'
Rear Setback (min)10'
Building Height (max)35'

Boulder Revised Code, Title 9 Land Use Code (through Ord. 8599, 2024) MU-2 setback standards (\u00a79-7-1 Table 7-1 Schedule of Form and Bulk Standards) — effective 2024 · View the code

MU-3setback & dimensional standards
StandardRequirement
Front Setback (min)0' (k)
Side Interior Setback (min)0' or 5'
Side Setback Abutting Street (min)0' for first and second stories 12' for third story and above
Rear Setback (min)15'
Building Height (max)38'

Boulder Revised Code, Title 9 Land Use Code (through Ord. 8599, 2024) MU-3 setback standards (\u00a79-7-1 Table 7-1 Schedule of Form and Bulk Standards) — effective 2024 · View the code

MU-4setback & dimensional standards
StandardRequirement
Front Setback (min)0' (k)
Side Interior Setback (min)0' or 5'
Side Setback Abutting Street (min)0' for first and second stories 12' for third story and above
Rear Setback (min)0'
Building Height (max)38'

Boulder Revised Code, Title 9 Land Use Code (through Ord. 8599, 2024) MU-4 setback standards (\u00a79-7-1 Table 7-1 Schedule of Form and Bulk Standards) — effective 2024 · View the code

Psetback & dimensional standards
StandardRequirement
Front Setback (min)25' (k)
Side Interior Setback (min)10'
Side Setback Abutting Street (min)12.5' (k)
Rear Setback (min)25'
Building Height (max)35'

Boulder Revised Code, Title 9 Land Use Code (through Ord. 8599, 2024) P setback standards (\u00a79-7-1 Table 7-1 Schedule of Form and Bulk Standards) — effective 2024 · View the code

REsetback & dimensional standards
StandardRequirement
Front Setback (min)25' (k)
Side Interior Setback (min)10'
Side Setback Abutting Street (min)25'
Rear Setback (min)25'
Building Height (max)35'

Boulder Revised Code, Title 9 Land Use Code (through Ord. 8599, 2024) RE setback standards (\u00a79-7-1 Table 7-1 Schedule of Form and Bulk Standards) — effective 2024 · View the code

RH-1setback & dimensional standards
StandardRequirement
Front Setback (min)15'
Side Interior Setback (min)0' or 3'
Side Setback Abutting Street (min)1' per 2' of bldg. height, 10' min. (i)
Rear Setback (min)15'
Building Height (max)35'

Boulder Revised Code, Title 9 Land Use Code (through Ord. 8599, 2024) RH-1 setback standards (\u00a79-7-1 Table 7-1 Schedule of Form and Bulk Standards) — effective 2024 · View the code

RH-2setback & dimensional standards
StandardRequirement
Front Setback (min)25' (k)
Side Interior Setback (min)10'
Side Setback Abutting Street (min)12.5' (k)
Rear Setback (min)25'
Building Height (max)35'

Boulder Revised Code, Title 9 Land Use Code (through Ord. 8599, 2024) RH-2 setback standards (\u00a79-7-1 Table 7-1 Schedule of Form and Bulk Standards) — effective 2024 · View the code

RH-3setback & dimensional standards
StandardRequirement
Front Setback (min)10'
Side Interior Setback (min)1' per 3' of bldg. height, 5' min. (i)
Side Setback Abutting Street (min)1' per 2' of bldg. height, 10' min. (i)
Rear Setback (min)15'
Building Height (max)40'

Boulder Revised Code, Title 9 Land Use Code (through Ord. 8599, 2024) RH-3 setback standards (\u00a79-7-1 Table 7-1 Schedule of Form and Bulk Standards) — effective 2024 · View the code

RH-4setback & dimensional standards
StandardRequirement
Front Setback (min)20'
Side Interior Setback (min)1' per 2' of bldg. height, 5' min. (i)
Side Setback Abutting Street (min)1' per 2' of bldg. height, 10' min. (i)
Rear Setback (min)20'
Building Height (max)35'

Boulder Revised Code, Title 9 Land Use Code (through Ord. 8599, 2024) RH-4 setback standards (\u00a79-7-1 Table 7-1 Schedule of Form and Bulk Standards) — effective 2024 · View the code

RH-5setback & dimensional standards
StandardRequirement
Front Setback (min)25' (k)
Side Interior Setback (min)10'
Side Setback Abutting Street (min)12.5' (k)
Rear Setback (min)25'
Building Height (max)35'

Boulder Revised Code, Title 9 Land Use Code (through Ord. 8599, 2024) RH-5 setback standards (\u00a79-7-1 Table 7-1 Schedule of Form and Bulk Standards) — effective 2024 · View the code

RH-6setback & dimensional standards
StandardRequirement
Front Setback (min)15'
Side Interior Setback (min)0' or 3'
Side Setback Abutting Street (min)1' per 2' of bldg. height, 10' min. (i)
Rear Setback (min)15'
Building Height (max)35'

Boulder Revised Code, Title 9 Land Use Code (through Ord. 8599, 2024) RH-6 setback standards (\u00a79-7-1 Table 7-1 Schedule of Form and Bulk Standards) — effective 2024 · View the code

RH-7setback & dimensional standards
StandardRequirement
Front Setback (min)10'
Side Interior Setback (min)1' per 3' of bldg. height, 5' min. (i)
Side Setback Abutting Street (min)1' per 2' of bldg. height, 10' min. (i)
Rear Setback (min)15'
Building Height (max)40'

Boulder Revised Code, Title 9 Land Use Code (through Ord. 8599, 2024) RH-7 setback standards (\u00a79-7-1 Table 7-1 Schedule of Form and Bulk Standards) — effective 2024 · View the code

RL-1setback & dimensional standards
StandardRequirement
Front Setback (min)25' (k)
Side Interior Setback (min)5'
Side Setback Abutting Street (min)12.5' (k)
Rear Setback (min)25'
Building Height (max)35'

Boulder Revised Code, Title 9 Land Use Code (through Ord. 8599, 2024) RL-1 setback standards (\u00a79-7-1 Table 7-1 Schedule of Form and Bulk Standards) — effective 2024 · View the code

RL-2setback & dimensional standards
StandardRequirement
Front Setback (min)20'
Side Interior Setback (min)1' per 2' of bldg. height, 5' min. (i)
Side Setback Abutting Street (min)10'
Rear Setback (min)20'
Building Height (max)35'

Boulder Revised Code, Title 9 Land Use Code (through Ord. 8599, 2024) RL-2 setback standards (\u00a79-7-1 Table 7-1 Schedule of Form and Bulk Standards) — effective 2024 · View the code

RM-1setback & dimensional standards
StandardRequirement
Front Setback (min)20'
Side Interior Setback (min)1' per 2' of bldg. height, 5' min. (i)
Side Setback Abutting Street (min)10'
Rear Setback (min)20'
Building Height (max)35'

Boulder Revised Code, Title 9 Land Use Code (through Ord. 8599, 2024) RM-1 setback standards (\u00a79-7-1 Table 7-1 Schedule of Form and Bulk Standards) — effective 2024 · View the code

RM-2setback & dimensional standards
StandardRequirement
Front Setback (min)25' (k)
Side Interior Setback (min)5'
Side Setback Abutting Street (min)12.5' (k)
Rear Setback (min)25'
Building Height (max)35'

Boulder Revised Code, Title 9 Land Use Code (through Ord. 8599, 2024) RM-2 setback standards (\u00a79-7-1 Table 7-1 Schedule of Form and Bulk Standards) — effective 2024 · View the code

RM-3setback & dimensional standards
StandardRequirement
Front Setback (min)15'
Side Interior Setback (min)0' or 3'
Side Setback Abutting Street (min)1' per 2' of bldg. height, 10' min. (i)
Rear Setback (min)15'
Building Height (max)35'

Boulder Revised Code, Title 9 Land Use Code (through Ord. 8599, 2024) RM-3 setback standards (\u00a79-7-1 Table 7-1 Schedule of Form and Bulk Standards) — effective 2024 · View the code

RMX-1setback & dimensional standards
StandardRequirement
Front Setback (min)25' (k)
Side Interior Setback (min)5'
Side Setback Abutting Street (min)12.5' (k)
Rear Setback (min)25'
Building Height (max)35'

Boulder Revised Code, Title 9 Land Use Code (through Ord. 8599, 2024) RMX-1 setback standards (\u00a79-7-1 Table 7-1 Schedule of Form and Bulk Standards) — effective 2024 · View the code

RMX-2setback & dimensional standards
StandardRequirement
Front Setback (min)15'
Side Interior Setback (min)0' (attached DUs); 1' per 2' of bldg. height, 5' min. (detached DUs) (i)
Side Setback Abutting Street (min)0' (attached DUs); 1' per 2' of bldg. height, 5' min. (detached DUs) (i)
Rear Setback (min)20'
Building Height (max)35'

Boulder Revised Code, Title 9 Land Use Code (through Ord. 8599, 2024) RMX-2 setback standards (\u00a79-7-1 Table 7-1 Schedule of Form and Bulk Standards) — effective 2024 · View the code

RR-1setback & dimensional standards
StandardRequirement
Front Setback (min)25' (k)
Side Interior Setback (min)15'
Side Setback Abutting Street (min)25'
Rear Setback (min)25'
Building Height (max)35'

Boulder Revised Code, Title 9 Land Use Code (through Ord. 8599, 2024) RR-1 setback standards (\u00a79-7-1 Table 7-1 Schedule of Form and Bulk Standards) — effective 2024 · View the code

RR-2setback & dimensional standards
StandardRequirement
Front Setback (min)25' (k)
Side Interior Setback (min)10'
Side Setback Abutting Street (min)25'
Rear Setback (min)25'
Building Height (max)35'

Boulder Revised Code, Title 9 Land Use Code (through Ord. 8599, 2024) RR-2 setback standards (\u00a79-7-1 Table 7-1 Schedule of Form and Bulk Standards) — effective 2024 · View the code

Verify current requirements with the jurisdiction — informational reference only. Standards vary by overlay, lot, and use; we confirm the exact rules for your property during feasibility.

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What insulation work covers

Insulation projects in the Denver metro include attic top-ups, wall cavities, crawlspaces, and air sealing details that reduce drafts. Material choices include batts, blown-in, rigid foam, and spray foam as specified for the assembly. A municipally licensed Denver general contractor coordinates insulation with framing, drywall, and mechanical trades. Cost is project-specific and depends on area, access, and material system.

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Ventilation and moisture

Attic ventilation and moisture control should be checked before adding insulation. Covering recessed lights or blocking soffit vents can create hazards or moisture traps.

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Permits and who coordinates the work

Insulation included in a permitted remodel or alteration may be reviewed under City and County of Denver CPD building and energy-code rules. Stand-alone attic work should still be confirmed for local requirements. 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 when electrical or mechanical work is part of the package.

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What buyers should prepare

Priority areas (attic, walls, crawl), comfort complaints, and any known knob-and-tube or moisture issues.

FAQ

Common questions

Do insulation upgrades need a Denver permit?

Often when part of a broader permitted alteration. Confirm stand-alone attic work with CPD if unsure.

Who handles insulation project licensing?

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

Is more attic insulation always better?

More helps when ventilation and moisture are handled correctly. Blocking vents or covering unsafe fixtures is not.

What about spray foam?

It can fit some assemblies but needs proper application and sometimes ignition/thermal barriers. Specify the assembly first.

What information helps define scope?

Priority areas, access photos, comfort issues, and city or county.

Service Area

Serving Boulder and Boulder County

We serve Boulder, 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 Boulder project.

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