What Reviewers Check First on a Site Plan for Permit Approval in Colorado

Need a site plan for a permit in Colorado? Whether you are building a deck, shed, garage, fence, addition, driveway, or pool, your site plan is usually one of the first documents a permit reviewer looks at.

A clear site plan helps the reviewer quickly understand where the project is located, how it fits on the property, and whether it appears to meet basic zoning and permit requirements.

Why the First Review Matters

Permit reviewers often have a lot of applications to process. If your site plan is missing basic information, unclear, or hard to read, the review can slow down quickly.

Many permit delays do not happen because the project is impossible. They happen because the reviewer cannot confirm important details from the drawing.

In Colorado, reviewers commonly look for property boundaries, setbacks, structure locations, driveway access, utility areas, easements, grading, drainage, and clear labels. A strong site plan makes those details easy to find.

1. Property Lines and Lot Boundaries

The first thing many reviewers look for is the shape and limits of the property. Your site plan should clearly show the property lines so the reviewer can understand where your lot begins and ends.

This is especially important for projects near side yards, rear yards, alleys, easements, or neighboring properties.

Your site plan should clearly show:

• Front property line
• Rear property line
• Side property lines
• Lot shape
• Street frontage
• Alleys, if applicable
• Adjacent roads or access points

If the property lines are missing or unclear, the reviewer may not be able to verify placement, setbacks, or lot coverage.

2. Setbacks From Property Lines

Setbacks are one of the biggest review items on a residential site plan. A setback is the required distance between a structure and the property line.

For example, a shed, deck, garage, addition, or pool may need to be a certain distance from the front, rear, or side property lines.

Reviewers may check:

• Front setback
• Rear setback
• Side setbacks
• Corner lot setbacks
• Distance from proposed work to property lines
• Distance from existing buildings to the proposed project

If the setback dimensions are not shown, the reviewer may ask for a corrected site plan before continuing the permit review.

3. Existing and Proposed Structures

A good Colorado site plan should make it obvious what already exists and what is being proposed.

Reviewers need to know whether the new work is a deck, shed, pool, garage, fence, driveway, addition, patio cover, or other improvement. They also need to see how it relates to the house and other structures on the property.

Your site plan should label:

• Existing house
• Existing garage
• Existing driveway
• Existing patios, decks, or sheds
• Proposed project
• Proposed dimensions
• Distance between structures

One common mistake is showing the proposed project but not labeling it clearly. The reviewer should not have to guess what the new work is.

4. Building Size and Dimensions

Reviewers usually want to confirm the size of the proposed structure. This helps them check placement, lot coverage, setbacks, and whether the project matches the permit application.

For example, if your permit application says you are building a 12 ft x 16 ft shed, the site plan should show that same size clearly.

Important dimensions include:

• Length and width of the proposed structure
• Distance to property lines
• Distance to the existing home
• Driveway width, if relevant
• Pool or patio dimensions, if relevant
• Deck or addition footprint, if relevant

Clear dimensions help reduce back-and-forth with the permit office.

5. Driveways, Access, and Parking

For many Colorado properties, access is another important item. Reviewers may look at how vehicles enter the property, where the driveway is located, and whether the proposed work affects access or parking.

This is especially important if you are adding a garage, widening a driveway, building near an alley, or changing the front yard layout.

Your site plan may need to show:

• Existing driveway
• Proposed driveway changes
• Parking areas
• Garage access
• Alley access
• Sidewalks or curb cuts, if applicable

If your project affects access, make sure the site plan shows the existing and proposed layout clearly.

6. Easements and Utility Areas

Easements can create permit issues if they are ignored. An easement is an area of the property where a utility company, city, county, drainage authority, or other party may have certain rights of access.

Building over or too close to an easement can trigger corrections, delays, or additional approvals.

Common easements include:

• Utility easements
• Drainage easements
• Access easements
• Alley easements
• Sewer or water line easements

If an easement appears on your survey, plat, or property records, it should usually be shown on the site plan.

7. Drainage and Grading

Drainage is a major review concern in many Colorado communities. Reviewers want to make sure the project does not create drainage problems for the property, neighboring lots, sidewalks, roads, or public infrastructure.

Even a small project can raise drainage questions if it changes slope, blocks runoff, adds hard surface area, or directs water toward another property.

Reviewers may look for:

• Drainage direction
• Existing slopes
• Proposed grading changes
• Downspout direction
• Stormwater flow
• Hard surface areas
• Drainage easements

For basic residential projects, a simple site plan may be enough. For larger or more complex projects, the city or county may request additional drainage or grading information.

8. Streets, Sidewalks, and Right-of-Way

Your site plan should show the street or road next to the property. If there is a sidewalk, alley, curb, or right-of-way area, those details may also be important.

This is especially true for driveway changes, fences near the front yard, additions near the street, or projects on corner lots.

Useful details include:

• Street name
• Sidewalk location
• Curb location
• Alley location
• Right-of-way area
• Driveway connection

These details help the reviewer understand how your project fits with the surrounding public areas.

9. North Arrow, Scale, and Legend

A site plan should be easy to read. Reviewers should be able to quickly understand orientation, measurements, and symbols.

That is why a proper site plan usually includes a north arrow, scale, labels, and a simple legend when needed.

Helpful site plan elements include:

• North arrow
• Drawing scale
• Clear labels
• Property address
• Owner name, if required
• Project description
• Legend for symbols or line types

If the drawing looks confusing, incomplete, or unprofessional, it may lead to reviewer questions.

10. Matching the Permit Application

Your site plan should match the permit application. If the application says one thing and the site plan shows something different, the reviewer may pause the review.

For example, if the application says “detached garage” but the site plan shows a shed, that can create confusion. If the dimensions do not match, the reviewer may request clarification.

Make sure these details match:

• Project type
• Project size
• Property address
• Owner information
• Scope of work
• Location of proposed work

Consistency makes the application easier to approve.

Common Site Plan Mistakes That Delay Colorado Permits

Many permit delays come from simple site plan mistakes. These are avoidable if the plan is prepared carefully from the beginning.

Common mistakes include:

• Missing property lines
• No setback dimensions
• Proposed structure not labeled
• Existing structures missing
• No driveway or access shown
• Drainage direction not clear
• Utility easements missing
• Plan is not drawn to scale
• Dimensions do not match the permit application
• Drawing is too blurry or hard to read

A clean, detailed site plan gives the reviewer fewer reasons to send the application back for corrections.

What Projects Commonly Need a Site Plan in Colorado?

Requirements vary by city, county, and project type, but many residential permit applications may require a site plan.

Common examples include:

• Decks
• Sheds
• Garages
• Home additions
• Patio covers
• Swimming pools
• Driveways
• Fences
• Accessory dwelling units
• Detached structures
• Major exterior improvements

If your city or county asks for a site plan, it is usually because they need to confirm the location of the proposed work on the property.

Colorado Site Plan Checklist

Before submitting your permit application, review your site plan carefully.

Your site plan should include:

• Property boundaries
• Existing house and structures
• Proposed project location
• Project dimensions
• Setback distances
• Driveway and access areas
• Streets, sidewalks, or alleys
• Utility and drainage easements, if known
• Drainage direction, if required
• North arrow
• Scale
• Clear labels
• Property address

The more clearly these items are shown, the easier it is for the reviewer to understand your project.

How USA Site Plans Can Help

At USA Site Plans, we prepare clear, easy-to-read site plans for permit applications. Our plans are designed to help homeowners and contractors show the information reviewers commonly look for first.

We can help with site plans for decks, sheds, garages, additions, fences, pools, driveways, and other residential projects across Colorado.

Our site plans can include:

• Property lines
• Existing structures
• Proposed structures
• Setbacks
• Driveways
• Sidewalks
• Parking areas
• Labels and dimensions
• Basic notes and legend

If your reviewer requests edits, we can update the plan based on their comments.

Frequently Asked Questions

Do I need a site plan for a permit in Colorado?

Many residential permit applications in Colorado require a site plan, especially when the project changes the exterior layout of the property. This can include decks, sheds, garages, additions, pools, fences, driveways, and detached structures.

What does a permit reviewer check first on a site plan?

Reviewers often check property lines, setbacks, proposed structure location, dimensions, access, easements, and drainage. They want to confirm that the project is clearly shown and appears to meet basic zoning and permit requirements.

Can a missing setback delay my permit?

Yes. If setback distances are not shown, the reviewer may not be able to confirm whether the project is placed correctly on the lot. This can lead to correction comments or delays.

Does my site plan need to show drainage?

Some projects may require drainage details, especially if the work changes grading, adds impervious surface, or affects stormwater flow. Requirements depend on the city, county, and project type.

Can USA Site Plans create a site plan for my Colorado property?

Yes. USA Site Plans prepares site plans for homeowners, contractors, and property owners across Colorado. We can draft a clear plan showing the key details commonly needed for permit review.

Final Thoughts

A strong site plan can make the permit review process much smoother. Reviewers want to quickly understand where the project is located, how large it is, how close it is to property lines, and whether important site features are clearly shown.

If your Colorado permit application requires a site plan, the best approach is to submit a clear, detailed drawing from the start. That can help reduce corrections, avoid confusion, and move your project closer to approval.

Need help? Order your site plan from USA Site Plans today.