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BROOMFIELD SERVICES
Second-Story Addition in Broomfield
Licensed second-story addition services for Broomfield and Broomfield County. Double your living space without moving.
What Broomfield requires
Code reference: Permits and inspections verify compliance with adopted codes (primarily the 2024 International Residential Code and related codes via Ordinance 2295, effective April 15, 2026, under Title 15 / Chapter 15-03 of the Broomfield Municipal Code). Ord. 2295
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Local Service
Second-Story Addition Services in Broomfield, Colorado
Autotelic provides professional second-story addition services throughout Broomfield and the surrounding Broomfield County area. Full second-story additions across the Denver metro with structural engineering, framing, roofing, and complete interior build-out. Commercially licensed and insured. Whether you're in Broomfield (city and county between Denver and Boulder) or nearby communities, our team delivers quality workmanship backed by Colorado licensing and full insurance coverage.
Permit Thresholds
Broomfield permit thresholds
- Code reference
- Permits and inspections verify compliance with adopted codes (primarily the 2024 International Residential Code and related codes via Ordinance 2295, effective April 15, 2026, under Title 15 / Chapter 15-03 of the Broomfield Municipal Code).Ord. 2295
- Use tax (not collapsed into a single rate)
- Broomfield collects use tax of 4.15% applied to 50% of the total project valuation (assumed materials portion) at permit issuance for building materials.
- Code reference
- Use tax of 4.15% is also charged on 50% of site work valuation (e.g., landscaping, patios) per BMC §§ 3-08-040 and 3-08-060; exemptions are in BMC § 3-08-050.§ 3-08-040
- Code reference
- All information derives from Broomfield’s official Building Division resources and municipal code references (Title 15, Chapter 15-03, and use tax chapter 3-08).
Codes are amended regularly — verify current requirements with **The City and County of Broomfield (specifically its Building Division in the Community Development Department) issues residential building permits.
Zoning & ADU
Broomfield zoning & ADU quick facts
- R-1 — Minimum Lot Area
- 7000 sfR-1
- R-1 — Minimum Lot Width
- 70'R-1
- R-1 — Front Setback (min)
- 25'R-1
- R-1 — Side Interior Setback (min)
- 5'R-1
- R-1 — Side Setback Abutting Street (min)
- 20'R-1
- R-1 — Rear Setback (min)
- 25'R-1
- R-1 — Building Height (max)
- 30'R-1
- R1 — Front Setback (min)
- 25'R1
Codes are amended regularly — verify current requirements with **The City and County of Broomfield (specifically its Building Division in the Community Development Department) issues residential building permits.
The build sequence for a Second-Story Addition project
This service is a component of How a Home remodel project works in Broomfield.
Energy Code
Broomfield energy code quick facts
- Code reference
- Broomfield, Colorado (climate zone 5B), has adopted the 2024 International Energy Conservation Code (IECC) as amended by the Colorado Model Low Energy and Carbon Code (MLECC/LECC), via Ordinance 2295 (effective April 15, 2026, for permits issued on or after that date).Ord. 2295
- Code reference
- This replaces the prior 2021 IECC cycle.
- Code reference
- Key prescriptive or related requirements relevant to remodels/additions (drawn from the adopted 2024 IECC + MLECC framework; specific numeric envelope values like R-values or U-factors follow the base 2024 IECC tables for zone 5B unless further amended locally, with emphasis on performance/credits,
- Air leakage/ testing thresholds (R402.5.1.3 or equivalent in MLECC amendments)
- Maximum air leakage rates vary by climate zone and compliance path (e.g., prescriptive or ERI); testing required for many additions/alterations affecting the envelope.
- Electric-ready requirements (new Section R409/C410 in MLECC, integrated with pri
- Dedicated branch circuits, appropriately sized panel space, labeling, and condensate drainage provisions for future electrification of space heating, water heating, cooking, and clothes drying where combustion equipment is present (applies to alterations adding or replacing such systems).§R409
- Solar-ready zone (R409/C410 in MLECC)
- Designated solar-ready roof zone with construction document specifications for single-family, townhomes, and certain multifamily (applies to new roofs or major roof work in remodels/additions).
- EV-ready spaces (R409/C410 in MLECC, with local amendment)
- Conduit/raceway, panel capacity, wiring, and overcurrent protection for future EV charging; local amendment adjusts thresholds (e.g., for smaller lots) and requires at least 20% or a minimum of 2 spaces EV-ready in certain commercial contexts.
- Energy efficiency credits (R408/C406 in MLECC)
- Additional credits required based on conditioned floor area, occupancy, climate zone (5B), and combustion vs.
Codes are amended regularly — verify current requirements with **The City and County of Broomfield (specifically its Building Division in the Community Development Department) issues residential building permits.
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What a second-story addition covers
A second-story addition in the Denver metro adds habitable floor over an existing house: new floor structure, stairs, roof, windows, and usually electrical, mechanical, and plumbing. The existing foundation and walls have to carry the extra load. A municipally licensed Denver general contractor coordinates the project, design professionals, and licensed specialty trades. Cost is project-specific and depends on structure, roof, and how much of the first floor is opened.
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Structure and zoning height
City and County of Denver Community Planning and Development treats second-story additions as structural review items that exceed IRC prescriptive limits. The residential permitting guide asks for a letter of structural integrity sealed by a design professional who personally inspected the existing foundation and building (DBCA 133.3). Zoning height is measured in feet and stories from the front and rear base planes (Denver Zoning Code Sec. 13.1.2). Plans should show allowed versus proposed height.
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Permits and who coordinates the work
Additions typically need zoning, building, and Sewer Use and Drainage (SUDP) reviews, plus electrical, mechanical, and plumbing when those systems change. Denver Energy Code Chapter 5 [RE] applies to additions. 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 plus the design professionals required for the project.
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What buyers should prepare
Target rooms, existing drawings if any, roof and attic photos, and known foundation concerns.
FAQ
Common questions
Do second-story additions need a Denver permit?
Yes. CPD requires building, zoning, and typically SUDP, with structural review because the work exceeds IRC prescriptive limits.
Who handles second-story permits and licensing?
A municipally licensed Denver general contractor coordinates the project, design professionals, and specialty trades. Colorado has no statewide general contractor license.
Can the existing foundation take a second story?
Only after a design professional inspects it. CPD asks for a sealed structural-integrity letter for second-story additions.
How is height measured?
In feet and stories from the zoning front and rear base planes, not just from the sidewalk.
What information helps define scope?
Desired rooms, existing drawings, foundation notes, landmark status, and city or county.
Service Area
Serving Broomfield and Broomfield County
We serve Broomfield, 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 Broomfield project.
How It Runs
01
Survey
02
Design
03
Build
04
Verify
DESIGN SERVICES
Discovery & Site Analysis
Needs + preference programming, site survey, as-built documentation, feasibility.
We walk, measure, and photograph your property — existing conditions, utilities, structure, and constraints. You get the as-built documentation and feasibility read that every later decision rests on.
Learn more →Concept Design & Space Planning
Schematic design, floor plan studies, layout options.
Your scope becomes schematic floor plans you can compare side by side — circulation, daylight, adjacencies, and what each option does to the budget. Layout decisions happen on paper, where changes are cheap.
Learn more →Architectural Design & 3D Renderings
Design development, materials + finishes, photorealistic visualization.
The chosen concept resolves into materials, finishes, fixtures, and lighting — with the automation layer drawn in. Photorealistic renderings let you walk the space and adjust before anything is priced.
Learn more →Construction Documents & Permitting
Full CD sets, structural + MEP engineering coordination, permit-ready drawings.
Approved designs become coordinated architectural, structural, and MEP sheets — the set your jurisdiction permits from and trades build from. We submit, track, and answer review comments.
Learn more →CONSTRUCTION
New Construction & Custom Homes
Ground-up homes and light commercial, dirt to keys.
Ground-up residential and light commercial builds — foundations through finishes, including modular and steel construction. One accountable builder from dirt to keys.
Learn more →Remodels & Additions
Kitchens, baths, basements, pop-tops, whole-home.
Kitchens, baths, basements, pop-tops, and whole-home renovations that respect the house you already have. We handle structure, permits, and the dust.
Learn more →Commercial Tenant Finish & Build-Outs
Shells to working spaces — retail, office, restaurant, school.
Raw shells become working spaces — showrooms, offices, restaurants, schools. Dealer-spec finishes, code compliance, and opening dates held.
Learn more →ADUs & Modular Construction
Backyard cottages, garage conversions, factory-built homes.
Backyard cottages, garage conversions, and factory-built homes — zoning, design, permits, and set. Denver’s ADU rules are a specialty, not a surprise.
Learn more →Outdoor Living & Patio Structures
Decks, pergolas, and dining patios built for Colorado weather.
Decks, pergolas, and dining patios engineered for Colorado sun, snow, and hail — structure, shade, and drainage done right the first time.
Learn more →TECHNOLOGY
Smart Home Automation
Lighting, shades, climate, audio, security — one interface.
Whole-home control of lighting, shades, climate, audio, and security from a single interface — Crestron, Lutron, Savant, and Control4 designed in, not bolted on.
Learn more →A/V Systems
Theaters, distributed audio, video walls, commercial sound.
Theaters, distributed audio, video walls, and commercial sound — designed, installed, and tuned by the same team for over 20 years.
Learn more →Control Systems
Custom programming — scenes and schedules that fit the space.
Every subsystem brought into one elegant interface — custom programming for homes and venues, with scenes and schedules that match how the space is actually used.
Learn more →Networking & Edge Compute
Enterprise Wi-Fi, structured cabling, racks, on-prem compute.
Enterprise-grade Wi-Fi, structured cabling, racks, and on-premise compute — the backbone that makes everything else reliable, including our own Barbot platform.
Learn more →Solar & Energy Storage
Solar arrays, Tesla Powerwall, EV charging — certified install.
Solar arrays, Tesla Powerwall, and EV charging designed and installed by a Tesla Energy Certified team — roof, electrical, and app in one scope.
Learn more →Let's design your perfect Second-Story Addition together
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