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ARVADA SERVICES
Second-Story Addition in Arvada
Licensed second-story addition services for Arvada and Jefferson/Adams County. Double your living space without moving.
What Arvada requires
Code reference: Arvada requires building permits for most residential construction, alteration, repair, enlargement, replacement, equipment installation, use/occupancy changes, and demolition work, per the City’s Building Permits page and Chapter 18 of the Arvada City Code (which adopts the 2024 International Res Ord. No. 4921
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Local Service
Second-Story Addition Services in Arvada, Colorado
Autotelic provides professional second-story addition services throughout Arvada and the surrounding Jefferson/Adams 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 Arvada (historic Olde Town and rapid growth) or nearby communities, our team delivers quality workmanship backed by Colorado licensing and full insurance coverage.
The build sequence for a Second-Story Addition project
This service is a component of How a Home remodel project works in Arvada.
Permits & Licensing
Permits in Arvada
Arvada building permits are issued by Building Services, and the city notes that unpermitted work can jeopardize a contractor's licensing as well as a property's resale value. Permit applications, inspection scheduling, and status checks are handled through the separate Arvada Permits (eTRAKiT) site. Authority: City of Arvada — Building Services.
Permit Thresholds
Arvada permit thresholds
- Code reference
- Arvada requires building permits for most residential construction, alteration, repair, enlargement, replacement, equipment installation, use/occupancy changes, and demolition work, per the City’s Building Permits page and Chapter 18 of the Arvada City Code (which adopts the 2024 International ResOrd. No. 4921
- Code reference
- This is assessed in lieu of sales tax on construction materials used in Arvada (Arvada Municipal Code § 98-84).§ 98-84
- Code reference
- A separate 2026 Building Fee Schedule PDF is referenced but not detailed on the main pages.
- Code reference
- For the most current or project-specific details (including any local amendments to the 2024 IRC that might address minor/exempt work or structural thresholds), contact the Arvada Building Safety Division or check the adopted codes on the City website, as published information emphasizes case-by-cas
Codes are amended regularly — verify current requirements with City of Arvada — Building Services.
Energy Code
Arvada energy code quick facts
- Code reference
- Arvada, Colorado, has adopted the Colorado Low Energy Carbon Code (or Model Low Energy and Carbon Code/MLECC/LECC), based on the 2024 International Energy Conservation Code (IECC), with no additional local energy-code amendments noted beyond the state model. This applies alongside the 2024 Inter
- Code reference
- Adoption occurred via City Council action on March 24, 2026 (effective for permits submitted on or after approximately July 1, 2026).
- Code reference
- Arvada (Climate Zone 5B) does not use the Denver Green Code or Energize Denver program.
- Code reference
- For remodels and additions, the modified/new portions generally must comply with the current code (per IECC/LECC Sections C502/C503 or R502/R503 equivalents) without necessarily triggering updates to unmodified existing systems.
- Code reference
- Key prescriptive requirements (drawn from the 2024 IECC residential provisions as adopted in the Colorado LECC; values for CZ 5; relevant to new or modified envelope elements in additions/remodels):
- Ceiling/attic insulation
- Minimum R-49 (Table R402.1.3 / equivalent in LECC).
- Wood-frame above-grade wall insulation
- Options include R-20 + R-5 ci, R-13 + R-10 ci, or equivalent assembly U-factor ≤ 0.045 (or reduced options such as R-20 cavity with additional efficiency credits per R408); see Table R402.1.2/R402.1.3.
- Air leakage (blower-door testing)
- Maximum 3.0 ACH50 at 50 Pa for the tested dwelling unit or building under the prescriptive path in CZ 3–5 (R402.5.1.3 / equivalent).
Codes are amended regularly — verify current requirements with City of Arvada — Building Services.
Zoning & Dimensional Standards
Setback & dimensional standards in Arvada
Zone-district dimensional standards for Arvada, quoted verbatim from the Arvada Land Development Code. Knowing your lot's district — and its setbacks, height, and coverage limits — is where every feasibility conversation starts.
RN-12.5setback & dimensional standards
| Standard | Requirement |
|---|---|
| Front Setback (min) | 30 ft. |
| Side Interior Setback (min) | 10 ft. |
| Rear Setback (min) | 15 ft. |
| Building Coverage (max) | 35% |
| Building Height (max) | 28 ft. |
| Lot Area (min) | 12,500 sf. |
| Lot Width (min) | 100 ft. |
Arvada Land Development Code RN-12.5 setback standards (2-1-3-3 Table 2-1-3-3A (RN)) — effective 2025-12-16 · View the code
RN-32.5setback & dimensional standards
| Standard | Requirement |
|---|---|
| Front Setback (min) | 30 ft. |
| Side Interior Setback (min) | 15 ft. |
| Rear Setback (min) | 15 ft. |
| Building Coverage (max) | 25% |
| Building Height (max) | 35 ft. |
| Lot Area (min) | 32,500 sf. |
| Lot Width (min) | 100 ft. |
Arvada Land Development Code RN-32.5 setback standards (2-1-3-3 Table 2-1-3-3A (RN)) — effective 2025-12-16 · View the code
RN-4setback & dimensional standards
| Standard | Requirement |
|---|---|
| Front Setback (min) | 18 ft. |
| Side Interior Setback (min) | 5 ft. |
| Rear Setback (min) | 10 ft. |
| Building Coverage (max) | 40% |
| Building Height (max) | 28 ft. |
| Lot Area (min) | 4,000 sf. |
| Lot Width (min) | 40 ft. |
Arvada Land Development Code RN-4 setback standards (2-1-3-3 Table 2-1-3-3A (RN)) — effective 2025-12-16 · View the code
RN-6setback & dimensional standards
| Standard | Requirement |
|---|---|
| Front Setback (min) | 18 ft. |
| Side Interior Setback (min) | 5 ft. |
| Rear Setback (min) | 10 ft. |
| Building Coverage (max) | 40% |
| Building Height (max) | 28 ft. |
| Lot Area (min) | 6,000 sf. |
| Lot Width (min) | 50 ft. |
Arvada Land Development Code RN-6 setback standards (2-1-3-3 Table 2-1-3-3A (RN)) — effective 2025-12-16 · View the code
RN-7.5setback & dimensional standards
| Standard | Requirement |
|---|---|
| Front Setback (min) | 20 ft. |
| Side Interior Setback (min) | 7.5 ft. |
| Rear Setback (min) | 10 ft. |
| Building Coverage (max) | 40% |
| Building Height (max) | 28 ft. |
| Lot Area (min) | 7,500 sf. |
| Lot Width (min) | 75 ft. |
Arvada Land Development Code RN-7.5 setback standards (2-1-3-3 Table 2-1-3-3A (RN)) — effective 2025-12-16 · View the code
RN-Dsetback & dimensional standards
| Standard | Requirement |
|---|---|
| Front Setback (min) | 18 ft. |
| Side Interior Setback (min) | 5 ft. |
| Rear Setback (min) | 10 ft. |
| Building Coverage (max) | 40% |
| Building Height (max) | 28 ft. |
| Lot Area (min) | 6,000 sf. |
| Lot Width (min) | 60 ft. |
Arvada Land Development Code RN-D setback standards (2-1-3-3 Table 2-1-3-3A (RN)) — effective 2025-12-16 · 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 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 Arvada and Jefferson/Adams County
We serve Arvada, 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 Arvada 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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