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Second-Story Addition in Parker
Licensed second-story addition services for Parker and Douglas County. Double your living space without moving.
What Parker requires
Key official source: Parker Administrative Code, Section 301 (Permits and Inspections), specifically 301.1 (Permits Required) and 301.2 / 301.2.1 (Exempted Work). §301
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Second-Story Addition Services in Parker, Colorado
Autotelic provides professional second-story addition services throughout Parker and the surrounding Douglas 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 Parker (southeast Denver metro) or nearby communities, our team delivers quality workmanship backed by Colorado licensing and full insurance coverage.
Permit Thresholds
Parker permit thresholds
- Key official source
- Parker Administrative Code, Section 301 (Permits and Inspections), specifically 301.1 (Permits Required) and 301.2 / 301.2.1 (Exempted Work).§301
- Code reference
- Examples of residential remodel/alteration work typically requiring permits (per Town guidance, cross-referenced to Section 301):§301
- Code reference
- Exempt work (per Parker Administrative Code Section 301.2.1 for building permits; exemptions do not authorize work violating other codes/ordinances):§301.2.1
- Code reference
- One-story detached accessory buildings (tool/storage sheds, playhouses, similar uses) with floor area ≤ 200 sq ft and ceilings ≤ 10 ft.
- Code reference
- Fences not over 6 ft high.
- Code reference
- Movable cases, counters, and partitions not over 5 ft 9 in high.
- Code reference
- Decks (any height/size), retaining/block walls over 48 inches, and related work are explicitly noted as requiring permits.
- Code reference
- A 2.5% convenience fee applies to credit card transactions.
Codes are amended regularly — verify current requirements with **Town of Parker Building Division (within incorporated Parker limits).
Zoning & ADU
Parker zoning & ADU quick facts
- Code reference
- SF1 (Large-Lot Residential, LDO §13.04.020), SF2 (Standard-Lot Residential, LDO §13.04.030), and SF3 (Small-Lot Residential, LDO §13.04.040) are the primary single-family residential districts.§13.04.020
- Max lot coverage %
- No numeric maximum lot coverage percentage is specified in the district standards for SF1, SF2, or SF3 (tables focus on minimum lot size/width, setbacks, and height; lot coverage may be addressed elsewhere or not regulated numerically in base districts).
- Max building height
- 35 feet in SF1 (LDO §13.04.020), SF2 (LDO §13.04.030), and SF3 (LDO §13.04.040).§13.04.020
- ADU permitted
- No specific permission or standards for accessory dwelling units (ADUs) are detailed in the base SF1/SF2/SF3 district provisions.
- Code reference
- Parker has asserted home-rule authority regarding state ADU mandates (HB24-1152 / C.R.S.
- Code reference
- §§ 29-35-402 et seq.), which generally require allowance of at least one ADU where single-unit detached dwellings are permitted; local implementation details are not enumerated in the available district standards.§ 29-35-402
- SF1 (LDO §13.04.020)
- Front 25 feet; side 10 feet; side (adjacent to street) none listed; rear 15 feet.§13.04.020
- Note [1]
- On Restricted Lots, buildings ≤35 ft tall require minimum 25 ft from each property line with a Protected Lot; buildings >35 ft require minimum 40 ft from each such line.
Codes are amended regularly — verify current requirements with **Town of Parker Building Division (within incorporated Parker limits).
The build sequence for a Second-Story Addition project
This service is a component of How a Home remodel project works in Parker.
Energy Code
Parker energy code quick facts
- Code reference
- 2024 International Energy Conservation Code (IECC), effective June 30, 2026, as adopted by the Town of Parker (no specific local energy code amendments noted beyond the base 2024 IECC and the separately listed 2025 Colorado Model Electric Ready and Solar Ready Code).
- Code reference
- Parker (Douglas County) is in IECC Climate Zone 5B.
- Code reference
- The 2024 IECC applies to additions and remodels/alterations (with the added or modified portions generally required to meet current prescriptive or performance requirements; unmodified portions are typically not required to be upgraded).
- Code reference
- Key prescriptive requirements (from the adopted 2024 IECC, relevant to remodels/additions in CZ 5; cite the base code sections as no local amendments override them):
- Code reference
- Vertical fenestration U-factor ≤ 0.28 (Table R402.1.2; 2024 IECC R402.1.2).
- Code reference
- Skylight U-factor ≤ 0.50 (Table R402.1.2; 2024 IECC R402.1.2).
- Code reference
- Air leakage ≤ 3 ACH50 (tested and verified; R402.4.1.2 / R402.5.1.2; applies to CZ 3–5, including 5B; 2024 IECC).
- Code reference
- Ceiling/attic insulation R-49 (prescriptive R-value path in Table R402.1.3 or equivalent U-factor path; 2024 IECC, reflecting 2024 updates from prior editions).
Codes are amended regularly — verify current requirements with **Town of Parker Building Division (within incorporated Parker limits).
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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 Parker and Douglas County
We serve Parker, 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 Parker project.
How It Runs
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Survey
02
Design
03
Build
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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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