Do I need a permit to build a deck in Arvada, CO?

Yes. In Arvada, any attached deck or a detached deck that is more than 30 inches above grade requires a building permit. Your application must include a site plan showing the deck's footprint, dimensions, distance to all property lines, and the location of any existing structures on the lot. The site plan must be drawn to scale. Arvada's Building Division enforces the International Residential Code for deck construction, which means you will also need to provide framing details, footing specifications, and ledger attachment information if the deck attaches to your house. Plan review for a straightforward deck typically takes 10 to 15 business days through Arvada's online permitting portal. Inspections are required at the footing and framing stages before you can proceed.

What are the setback requirements for residential properties in Arvada?

Setbacks in Arvada vary by zoning district, but in common residential zones such as R-1 and R-2, typical requirements are a 20- to 25-foot front setback, a 5- to 7-foot interior side setback, and a 20- to 25-foot rear setback for principal structures. Corner lots usually require a larger setback on the street-facing side, often 10 to 15 feet. Detached accessory structures like sheds and garages in the rear yard may be permitted as close as 5 feet to side and rear property lines, provided they meet height limits. Planned unit developments and older subdivisions in Arvada can have custom setbacks written into their plats, so always verify your specific address with the City of Arvada Community Development Department before finalizing your site plan.

How long does it take to get a building permit approved in Arvada?

For most standard residential projects in Arvada, the Building Division targets a plan review turnaround of 10 to 15 business days from the date of a complete submission. Simple projects such as fences or small sheds may qualify for over-the-counter review and can sometimes be approved the same day. More complex projects, including room additions, accessory dwelling units, and projects in the Olde Town historic overlay district, can take four to six weeks or longer, especially if correction comments require a resubmittal. The fastest way to avoid delays is to submit a complete, accurate application the first time. Responding to correction notices promptly also keeps your project moving through Arvada's review queue.

What does Arvada require on a residential site plan?

Arvada's Building Division requires that a residential site plan be drawn to a recognizable scale (commonly 1 inch equals 20 feet) and include a north arrow, lot dimensions and total square footage, all existing structures with dimensions and distances to property lines, the proposed structure with dimensions and setback distances to all property lines, driveways and walkways, utility easements, and any relevant overlay information such as floodplain boundaries. For ADU projects, the site plan must also show parking spaces and utility connection points. If your property is near Ralston Creek or another FEMA-mapped floodplain area, you may need to include finished floor elevations. Missing any of these elements is one of the most common reasons Arvada returns applications with correction notices.

Can I draw my own site plan in Arvada, or do I need a licensed surveyor?

For most standard residential permits in Arvada, you are not required to hire a licensed land surveyor or engineer to prepare your site plan. Homeowners and contractors can draw their own site plans as long as the drawing is accurate, to scale, and includes all required information. Many applicants use online tools like Site Plan Creator to produce clean, professional-looking site plans without specialized software. However, if your project involves a floodplain development permit, a significant grading plan, or a formal boundary dispute, Arvada may require a survey prepared by a licensed Colorado Professional Land Surveyor. For ADU projects or complex additions, a licensed architect or engineer may be required to stamp structural drawings, though the site plan itself can often still be owner-prepared.

How much does a building permit cost in Arvada, CO?

Arvada calculates building permit fees based on the estimated valuation of the construction project. The fee schedule uses a sliding scale, so larger and more expensive projects pay higher fees. As a general reference, a modest deck project valued around $10,000 might incur permit fees in the range of $150 to $300, while a room addition valued at $80,000 could see fees of $700 to $1,200 or more. Plan review fees are typically included within the permit fee structure. Separate trade permits for electrical, plumbing, and mechanical work carry their own fees. You can get a fee estimate by contacting Arvada's Building Division directly or using the fee calculator available through the city's online permitting portal. Fees are subject to change, so always confirm current rates before budgeting.

Do I need a permit to build an ADU in Arvada, Colorado?

Yes, accessory dwelling units (ADUs) require a full building permit in Arvada. The city has been actively encouraging ADU development as part of its housing diversity strategy, and the permitting process reflects that, with a dedicated review track for ADU applications. Your permit package must include a detailed site plan showing the ADU footprint, all setbacks, required off-street parking (typically one space per ADU), and utility connections. Both attached ADUs (such as basement conversions) and detached ADUs (backyard cottages) are permitted in most residential zones, subject to size limits and design standards. Arvada's ADU regulations have been updated in recent years to streamline approvals, but plan review still takes 10 to 15 business days or longer for complex projects. Contact the Community Development Department for the most current ADU standards.

What happens if I build without a permit in Arvada?

Building without a required permit in Arvada can result in serious consequences. The city's Building Division has the authority to issue a stop-work order, which halts all construction immediately. You may be required to obtain a retroactive permit, which typically costs more than a standard permit and requires an inspector to verify compliance with code, sometimes requiring walls or other elements to be opened up for inspection. Unpermitted work can also create problems when you sell your home, as title companies and buyers' inspectors routinely flag unpermitted structures. In some cases, you may be required to remove unpermitted construction entirely. Civil fines can also be assessed. The safest and most cost-effective approach is always to pull the correct permit before work begins.

Does my Arvada property's location in a floodplain affect my permit application?

Yes, significantly. Parts of Arvada along Ralston Creek, Van Bibber Creek, and other drainageways fall within FEMA-designated Special Flood Hazard Areas (SFHAs). If your property is in or adjacent to one of these zones, your building permit application will trigger a floodplain development review in addition to standard building code review. You will likely need to provide an elevation certificate prepared by a licensed surveyor, and any new or substantially improved structures must have their lowest finished floor elevated above the Base Flood Elevation. Arvada administers its floodplain program in coordination with Jefferson County and FEMA's National Flood Insurance Program. You can check your property's flood zone status using the FEMA Flood Map Service Center at msc.fema.gov before preparing your application.

Where do I submit a permit application in Arvada, and can I do it online?

Arvada accepts building permit applications through its online permitting portal, which is the preferred submission method for most projects. You create an account, select the permit type, upload your site plan and supporting documents in PDF format, and pay any applicable fees electronically. The portal also allows you to track your application status and respond to correction notices. For homeowners who prefer in-person assistance, the Community Development counter at Arvada City Hall (8101 Ralston Road) is open during regular business hours. Some very simple permits, such as fences and minor mechanical work, may still be processed over the counter with same-day or next-day turnaround. Calling the Building Division at (720) 898-7540 before your first visit can help you confirm what documents to bring.

Site Plan Requirements in Arvada, CO (Permit Guide)

By Site Plan Creator Team • May 26, 2026

Arvada, Colorado homeowners need a compliant site plan for most residential building permits, from decks and fences to ADUs and additions. This guide covers Arvada's permit triggers, setback rules, submission process, and common pitfalls to avoid before you break ground.

Site plan requirements for residential properties in Arvada, Colorado

Residential Site Plans and Building Permits in Arvada, CO

Nestled between Denver and the Rocky Mountain foothills, Arvada is one of Jefferson County's fastest-growing cities, with a mix of established mid-century neighborhoods, newer subdivisions, and a revitalized Olde Town district. That growth brings a steady stream of home improvement projects, and the City of Arvada takes its development review process seriously. Whether you are adding a deck overlooking the Front Range, converting your garage into a rental unit, or installing a backyard pool, you will almost certainly need a building permit, and that permit will require a site plan. Understanding what Arvada expects before you submit can save you weeks of back-and-forth with the Building Division.

What Is a Residential Site Plan and Why Does Arvada Require One?

A residential site plan is a scaled, bird's-eye drawing of your property showing the lot boundaries, existing structures, proposed construction, setbacks, easements, driveways, and any other features relevant to your project. Arvada requires site plans because they allow reviewers to verify that your project complies with the city's zoning code, building codes adopted from the International Building Code (IBC), and Jefferson County floodplain regulations. A clear, accurate site plan is the single fastest way to move your application through plan review without a correction notice.

Arvada adopts the International Codes published by the ICC and enforces them through its Building Division. Colorado also has statewide energy and radon provisions that layer on top of the base codes, so your site plan and construction documents must reflect both local and state requirements.

Residential Permit Triggers in Arvada

The following projects almost always require a permit and a site plan in Arvada:

Decks and patios: Any attached deck or a detached deck over 30 inches above grade requires a permit. Your site plan must show the deck footprint, distance to property lines, and any existing structures.
Sheds and accessory structures: Sheds larger than 120 square feet require a permit. Even smaller sheds must comply with setback rules, so a site plan is often requested.
Swimming pools and hot tubs: In-ground and above-ground pools deeper than 24 inches require a permit. The site plan must show the pool location, required barrier/fence, and distances to the house and property lines.
Fences: Fences over 6 feet in height require a permit. Fences in front yards are generally limited to 4 feet. A site plan or plot plan showing fence location is typically required.
Additions and room expansions: Any addition to your home's footprint requires a full permit package including a detailed site plan.
Accessory Dwelling Units (ADUs): Arvada has actively encouraged ADU development to address housing supply. Both attached and detached ADUs require permits, and the site plan must show the ADU footprint, setbacks, parking, and utility connections.
Driveways and impervious surface: New driveways or significant expansions require a permit and may trigger stormwater review. Arvada monitors total impervious surface coverage on residential lots.
HVAC, electrical, and plumbing: These trade permits generally do not require a site plan but do require separate applications.

Arvada Zoning Quirks and Local Considerations

Arvada's zoning code includes several details that frequently catch homeowners off guard:

Olde Town Overlay District: Properties within the Olde Town Arvada historic area are subject to additional design review. Exterior changes, additions, and new accessory structures may need approval from the Historic Preservation Board before a building permit is issued. Check whether your address falls within this overlay before designing your project.

Jefferson County Floodplain: Parts of Arvada along Ralston Creek and Van Bibber Creek fall within FEMA-designated Special Flood Hazard Areas. If your property is in or near a floodplain, your site plan must include finished floor elevations, and you may need a Floodplain Development Permit in addition to a standard building permit. Review your flood zone status on the FEMA Flood Map Service Center.

HOA Restrictions: Many Arvada subdivisions have active homeowners associations with their own design standards. HOA approval does not substitute for a city permit, and a city permit does not override HOA rules. Always check both.

Wildfire Hazard: Arvada's western edges near the foothills carry elevated wildfire risk. Projects in these areas may be subject to Colorado's wildfire mitigation requirements, including specific roofing materials and defensible space standards.

Impervious Surface Limits: Arvada's stormwater regulations cap the percentage of a residential lot that can be covered by impervious surfaces. Adding a large patio, driveway, or accessory structure can push you over the threshold and trigger a stormwater management review.

Typical Setback Requirements in Arvada

Setbacks vary by zoning district, but the following ranges reflect common residential (R-1, R-2, and R-3) requirements in Arvada:

Front setback: 20 to 25 feet from the front property line
Side setback: 5 to 7 feet for interior lots; corner lots often require 10 to 15 feet on the street side
Rear setback: 20 to 25 feet for principal structures; detached accessory structures may be allowed closer (often 5 feet) when meeting height limits
Garage setbacks: Attached garages must meet the same front setback as the house; detached garages in rear yards typically require a 5-foot setback from side and rear lines

Always confirm your specific zoning district's setbacks through the City of Arvada's Community Development Department before finalizing your site plan, as planned unit developments (PUDs) and older plats can have custom setback requirements that differ from the standard code.

The Permit Submission Process in Arvada

Step 1: Determine Your Project Scope

Before preparing any documents, confirm with Arvada's Building Division whether your project requires a permit and what plan review track applies. Simple projects like fences and small sheds may qualify for over-the-counter review, while additions and ADUs go through a full plan review cycle.

Step 2: Prepare Your Site Plan and Supporting Documents

Your site plan should be drawn to scale (typically 1 inch = 20 feet for residential lots) and include: lot dimensions and total area, north arrow, all existing structures with dimensions, proposed structure with dimensions and distances to all property lines, easements, utility lines, driveways, and any floodplain or overlay district boundaries.

Step 3: Submit Through Arvada's Online Portal

Arvada accepts permit applications through its online permitting portal. You will upload your site plan (PDF format preferred), construction drawings, and any supporting documents such as energy calculations or soils reports. Some simple permits can still be submitted in person at the Community Development counter at Arvada City Hall.

Step 4: Plan Review and Corrections

For standard residential projects, Arvada targets a plan review turnaround of 10 to 15 business days. Complex projects such as ADUs or additions may take longer. If reviewers issue correction comments, you will need to revise and resubmit. Responding quickly and thoroughly to correction notices is the best way to keep your project on schedule.

Step 5: Permit Issuance and Inspections

Once approved, you pay your permit fee and receive your permit. Post the permit on site before work begins. Inspections are required at key milestones (footing, framing, electrical rough-in, final), and you must schedule them through the city's inspection request system.

Common Reasons Arvada Applications Get Rejected

Site plan not drawn to scale or missing a north arrow
Setback dimensions not shown or incorrectly calculated from the property line (not the fence or curb)
Proposed structure encroaches on a recorded easement
Missing lot coverage calculation when project adds significant impervious surface
Floodplain elevation certificate missing for properties near Ralston Creek
ADU applications missing required parking plan or utility connection details
Olde Town overlay projects submitted without Historic Preservation Board approval

Start Your Arvada Site Plan with Site Plan Creator

Preparing an accurate, to-scale site plan does not require expensive software or a professional drafter for most residential projects. Site Plan Creator gives Arvada homeowners and contractors an intuitive online tool to produce clean, permit-ready site plans in minutes. You can plot your lot boundaries, place structures, show setbacks, and export a professional PDF ready for Arvada's online permitting portal. Stop guessing and start building with confidence.

Frequently Asked Questions

Do I need a permit to build a deck in Arvada, CO?: Yes. In Arvada, any attached deck or a detached deck that is more than 30 inches above grade requires a building permit. Your application must include a site plan showing the deck's footprint, dimensions, distance to all property lines, and the location of any existing structures on the lot. The site plan must be drawn to scale. Arvada's Building Division enforces the International Residential Code for deck construction, which means you will also need to provide framing details, footing specifications, and ledger attachment information if the deck attaches to your house. Plan review for a straightforward deck typically takes 10 to 15 business days through Arvada's online permitting portal. Inspections are required at the footing and framing stages before you can proceed.
What are the setback requirements for residential properties in Arvada?: Setbacks in Arvada vary by zoning district, but in common residential zones such as R-1 and R-2, typical requirements are a 20- to 25-foot front setback, a 5- to 7-foot interior side setback, and a 20- to 25-foot rear setback for principal structures. Corner lots usually require a larger setback on the street-facing side, often 10 to 15 feet. Detached accessory structures like sheds and garages in the rear yard may be permitted as close as 5 feet to side and rear property lines, provided they meet height limits. Planned unit developments and older subdivisions in Arvada can have custom setbacks written into their plats, so always verify your specific address with the City of Arvada Community Development Department before finalizing your site plan.
How long does it take to get a building permit approved in Arvada?: For most standard residential projects in Arvada, the Building Division targets a plan review turnaround of 10 to 15 business days from the date of a complete submission. Simple projects such as fences or small sheds may qualify for over-the-counter review and can sometimes be approved the same day. More complex projects, including room additions, accessory dwelling units, and projects in the Olde Town historic overlay district, can take four to six weeks or longer, especially if correction comments require a resubmittal. The fastest way to avoid delays is to submit a complete, accurate application the first time. Responding to correction notices promptly also keeps your project moving through Arvada's review queue.
What does Arvada require on a residential site plan?: Arvada's Building Division requires that a residential site plan be drawn to a recognizable scale (commonly 1 inch equals 20 feet) and include a north arrow, lot dimensions and total square footage, all existing structures with dimensions and distances to property lines, the proposed structure with dimensions and setback distances to all property lines, driveways and walkways, utility easements, and any relevant overlay information such as floodplain boundaries. For ADU projects, the site plan must also show parking spaces and utility connection points. If your property is near Ralston Creek or another FEMA-mapped floodplain area, you may need to include finished floor elevations. Missing any of these elements is one of the most common reasons Arvada returns applications with correction notices.
Can I draw my own site plan in Arvada, or do I need a licensed surveyor?: For most standard residential permits in Arvada, you are not required to hire a licensed land surveyor or engineer to prepare your site plan. Homeowners and contractors can draw their own site plans as long as the drawing is accurate, to scale, and includes all required information. Many applicants use online tools like Site Plan Creator to produce clean, professional-looking site plans without specialized software. However, if your project involves a floodplain development permit, a significant grading plan, or a formal boundary dispute, Arvada may require a survey prepared by a licensed Colorado Professional Land Surveyor. For ADU projects or complex additions, a licensed architect or engineer may be required to stamp structural drawings, though the site plan itself can often still be owner-prepared.
How much does a building permit cost in Arvada, CO?: Arvada calculates building permit fees based on the estimated valuation of the construction project. The fee schedule uses a sliding scale, so larger and more expensive projects pay higher fees. As a general reference, a modest deck project valued around $10,000 might incur permit fees in the range of $150 to $300, while a room addition valued at $80,000 could see fees of $700 to $1,200 or more. Plan review fees are typically included within the permit fee structure. Separate trade permits for electrical, plumbing, and mechanical work carry their own fees. You can get a fee estimate by contacting Arvada's Building Division directly or using the fee calculator available through the city's online permitting portal. Fees are subject to change, so always confirm current rates before budgeting.
Do I need a permit to build an ADU in Arvada, Colorado?: Yes, accessory dwelling units (ADUs) require a full building permit in Arvada. The city has been actively encouraging ADU development as part of its housing diversity strategy, and the permitting process reflects that, with a dedicated review track for ADU applications. Your permit package must include a detailed site plan showing the ADU footprint, all setbacks, required off-street parking (typically one space per ADU), and utility connections. Both attached ADUs (such as basement conversions) and detached ADUs (backyard cottages) are permitted in most residential zones, subject to size limits and design standards. Arvada's ADU regulations have been updated in recent years to streamline approvals, but plan review still takes 10 to 15 business days or longer for complex projects. Contact the Community Development Department for the most current ADU standards.
What happens if I build without a permit in Arvada?: Building without a required permit in Arvada can result in serious consequences. The city's Building Division has the authority to issue a stop-work order, which halts all construction immediately. You may be required to obtain a retroactive permit, which typically costs more than a standard permit and requires an inspector to verify compliance with code, sometimes requiring walls or other elements to be opened up for inspection. Unpermitted work can also create problems when you sell your home, as title companies and buyers' inspectors routinely flag unpermitted structures. In some cases, you may be required to remove unpermitted construction entirely. Civil fines can also be assessed. The safest and most cost-effective approach is always to pull the correct permit before work begins.
Does my Arvada property's location in a floodplain affect my permit application?: Yes, significantly. Parts of Arvada along Ralston Creek, Van Bibber Creek, and other drainageways fall within FEMA-designated Special Flood Hazard Areas (SFHAs). If your property is in or adjacent to one of these zones, your building permit application will trigger a floodplain development review in addition to standard building code review. You will likely need to provide an elevation certificate prepared by a licensed surveyor, and any new or substantially improved structures must have their lowest finished floor elevated above the Base Flood Elevation. Arvada administers its floodplain program in coordination with Jefferson County and FEMA's National Flood Insurance Program. You can check your property's flood zone status using the FEMA Flood Map Service Center at msc.fema.gov before preparing your application.
Where do I submit a permit application in Arvada, and can I do it online?: Arvada accepts building permit applications through its online permitting portal, which is the preferred submission method for most projects. You create an account, select the permit type, upload your site plan and supporting documents in PDF format, and pay any applicable fees electronically. The portal also allows you to track your application status and respond to correction notices. For homeowners who prefer in-person assistance, the Community Development counter at Arvada City Hall (8101 Ralston Road) is open during regular business hours. Some very simple permits, such as fences and minor mechanical work, may still be processed over the counter with same-day or next-day turnaround. Calling the Building Division at (720) 898-7540 before your first visit can help you confirm what documents to bring.

How to Create a Site Plan in Arvada

Confirm Your Permit Requirements: Contact Arvada's Building Division or review the city's online resources to confirm whether your specific project requires a permit and site plan. Not all projects have the same requirements: a small shed under 120 square feet has different triggers than a room addition or ADU. Knowing exactly what Arvada requires before you start designing saves time and prevents wasted effort on documents you may not need.
Research Your Zoning and Setbacks: Look up your property's zoning district through the City of Arvada's Community Development Department or its online GIS mapping tool. Note your required front, side, and rear setbacks, and check whether your address falls within the Olde Town historic overlay, a floodplain zone, or a planned unit development with custom standards. This information is essential before you can accurately draw your site plan.
Draw Your Site Plan to Scale: Create a scaled site plan (typically 1 inch equals 20 feet for residential lots) that shows lot boundaries, all existing structures, the proposed project with dimensions, setback distances to all property lines, driveways, easements, and a north arrow. Use an online tool like Site Plan Creator to produce a clean, professional PDF quickly. Accuracy at this stage is critical: incorrect setback dimensions are one of the top reasons Arvada returns applications with correction notices.
Assemble Your Full Application Package: Gather all required documents beyond the site plan: construction drawings, energy compliance forms, soils reports (if required), and any special approvals such as Historic Preservation Board sign-off for Olde Town properties or an elevation certificate for floodplain properties. Review Arvada's permit application checklist for your project type to make sure nothing is missing before you submit.
Submit Online and Pay Fees: Log in to Arvada's online permitting portal, select your permit type, upload all documents in PDF format, and pay the applicable permit fee. After submission, monitor your application status through the portal. If the Building Division issues correction comments, respond promptly and completely to avoid delays. Once approved, download and print your permit for posting on the job site.
Schedule Required Inspections: After your permit is issued and work begins, schedule all required inspections through Arvada's inspection request system. Common inspection milestones include footing, framing, rough-in trades, and final inspection. Do not cover work that has not been inspected. A final inspection sign-off is required to close out your permit and is often necessary for homeowners insurance updates and future property sales.