Guide

The Guide to ADU Surveys in Colorado

Building an Accessory Dwelling Unit (ADU) in Colorado is an exciting opportunity to expand your property’s potential, but before construction begins, an essential step often comes into play: a property survey. Many homeowners underestimate the importance of a survey in the ADU planning process, yet it’s a critical tool to ensure your project complies with zoning laws, property lines, and local building codes. At Kindred Tiny Homes, we prioritize clarity and transparency in every step of the ADU process. In this guide, we’ll cover everything you need to know about ADU surveys in Colorado—when you need one, the different types, and how they set the foundation for a smooth building process.

What Is an ADU Survey?

An ADU survey is a detailed assessment of your property that outlines critical elements such as property boundaries, existing structures, elevation, and utility placements. This survey is conducted by licensed surveyors and provides the precise information needed to plan and execute your ADU project in compliance with local regulations.

Key Components of an ADU Survey:

  • Property Lines: Defines the exact boundaries of your property to avoid encroaching on neighboring land.
  • Topography: Highlights slopes, elevations, and natural features that may impact construction.
  • Easements: Identifies areas reserved for utilities or shared access that must remain unobstructed.
  • Existing Structures: Maps out the location of your home, garage, and other buildings on the property.
  • Setbacks: Ensures your ADU complies with city-mandated distances from property lines and other structures.

Why Are ADU Surveys Important?

An ADU survey lays the groundwork for your project’s success by providing critical insights that influence every stage of the process, from design to construction.

Avoid Costly Mistakes

Without a proper survey, your ADU project could face unexpected challenges such as encroaching on property lines, violating setback requirements, or damaging underground utilities. These mistakes can lead to costly fines, legal disputes, or delays.

Streamline Permitting

Many Colorado cities require a survey as part of the ADU permitting process. Submitting a complete and accurate survey can help avoid delays during plan review and ensure your application is approved quickly.

Optimize Design

A detailed survey helps architects and builders create a design that maximizes your property’s potential. For example, understanding the topography can guide decisions about the ADU’s placement and foundation type.

When Do You Need a Survey for an ADU in Colorado?

Not every ADU project requires a survey, but in many cases, it’s highly recommended—or even mandated. Here are the most common situations where an ADU survey is needed:

1. Determining Property Boundaries

Cities like Denver and Boulder have strict setback requirements for ADUs, often requiring a minimum distance between your unit and the property line. A survey ensures your plans align with these regulations.

2. Addressing Zoning Compliance

If your property is located in a zone with specific ADU regulations, a survey helps verify compliance. For example, Fort Collins mandates that ADUs meet detailed height and size restrictions based on lot dimensions.

3. Managing Utility Placements

If your ADU requires new utility connections or upgrades, a survey maps existing utility lines to avoid costly mistakes during construction.

4. Satisfying Permit Requirements

Some cities in Colorado require a survey as part of the permitting process, especially for complex projects or properties in high-density areas.

Types of Surveys for ADU Projects

Several types of surveys may be required depending on your ADU’s scope and location. Here’s a breakdown of the most common options:

1. Boundary Survey

This survey focuses on defining the exact property lines and is often the first step in the ADU process. It’s crucial for ensuring compliance with setback regulations.

2. Topographic Survey

A topographic survey provides a detailed map of your property’s elevation, slopes, and natural features. It’s essential for properties with uneven terrain or drainage considerations.

3. ALTA/NSPS Survey

This comprehensive survey is typically required for financing or title purposes. It includes boundary lines, easements, and improvements and ensures the property is free of encroachments.

4. Utility Survey

A utility survey maps out existing underground utility lines, helping to avoid damage during construction. This survey is particularly important when trenching for water, gas, or electricity.

5. Construction Staking Survey

This type of survey marks the exact locations where the ADU will be built on your property, ensuring the structure aligns with approved plans and zoning requirements.

Cost of ADU Surveys in Colorado

The cost of an ADU survey varies depending on the type and complexity of the survey, as well as the size and location of your property. Here’s what you can expect:

Note: Prices may vary based on regional demand and property-specific challenges.

Colorado Cities: ADU Survey Requirements

Each city in Colorado has unique requirements for ADU surveys. Here’s a quick overview:

Denver

  • Requires boundary and topographic surveys for ADUs in most residential zones.
  • Strict setback and height regulations necessitate precise measurements.

Boulder

  • Mandates a survey for ADUs over a certain square footage.
  • Properties in flood zones may require additional elevation data.

Fort Collins

  • Encourages surveys for all ADU projects to streamline the permitting process.
  • Topographic surveys are common for properties with significant slopes.

Golden

  • Survey requirements depend on the property’s location and zoning designation.
  • Utility surveys are often needed for older neighborhoods.

Douglas County

  • Surveys are typically required for rural properties to ensure compliance with larger setback requirements.

How to Choose a Surveyor for Your ADU Project

Selecting the right surveyor is key to ensuring accurate results and a smooth ADU build. Here are some tips:

  1. Check Credentials: Ensure the surveyor is licensed in Colorado and experienced with residential projects.
  2. Get Recommendations: Ask your ADU builder or local planning department for trusted surveyor referrals.
  3. Compare Quotes: Obtain estimates from multiple surveyors and compare their services and timelines.
  4. Verify Insurance: Confirm the surveyor carries liability insurance to protect against errors.

7 Tips to Streamline Your ADU Survey Process

  1. Start Early: Initiate the survey process as soon as possible to avoid delays.
  2. Share Your Plans: Provide your surveyor with preliminary ADU designs to ensure alignment with your vision.
  3. Understand Local Requirements: Research your city’s specific survey needs to avoid surprises.
  4. Coordinate with Your Builder: Work closely with your ADU builder to integrate survey results into your project timeline.
  5. Double-Check Easements: Ensure no part of your ADU infringes on utility or shared access easements.
  6. Account for Slopes: If your property has uneven terrain, consider a topographic survey to address grading needs.
  7. Keep Documentation Handy: Maintain copies of all survey documents for future reference.

Why Surveys Matter for Your ADU’s Success

A well-executed survey lays the groundwork for a successful ADU project by:

  • Ensuring compliance with local regulations.
  • Avoiding costly mistakes and construction delays.
  • Providing clarity and confidence in your project’s feasibility.

At Kindred Tiny Homes, we understand the value of a thorough survey. Our team works hand-in-hand with experienced surveyors to make sure every detail is accounted for, so your ADU project stays on track and within budget.

Conclusion

Navigating the ADU survey process in Colorado may seem daunting, but with the right guidance, it can be a straightforward step in your journey to building the perfect accessory dwelling unit. Whether it’s defining property lines, understanding setbacks, or mapping utilities, surveys are essential for ensuring your ADU complies with local regulations and avoids costly pitfalls.

At Kindred Tiny Homes, we’re committed to making the ADU process as seamless as possible. From surveys to construction, our one-stop-shop approach ensures every step is handled with professionalism and care. Contact us today to learn more about starting your ADU project in Colorado.

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March 31, 2025

The Guide to ADU Surveys in Colorado

What Is an ADU Survey?

An ADU survey is a detailed assessment of your property that outlines critical elements such as property boundaries, existing structures, elevation, and utility placements. This survey is conducted by licensed surveyors and provides the precise information needed to plan and execute your ADU project in compliance with local regulations.

Key Components of an ADU Survey:

  • Property Lines: Defines the exact boundaries of your property to avoid encroaching on neighboring land.
  • Topography: Highlights slopes, elevations, and natural features that may impact construction.
  • Easements: Identifies areas reserved for utilities or shared access that must remain unobstructed.
  • Existing Structures: Maps out the location of your home, garage, and other buildings on the property.
  • Setbacks: Ensures your ADU complies with city-mandated distances from property lines and other structures.

Why Are ADU Surveys Important?

An ADU survey lays the groundwork for your project’s success by providing critical insights that influence every stage of the process, from design to construction.

Avoid Costly Mistakes

Without a proper survey, your ADU project could face unexpected challenges such as encroaching on property lines, violating setback requirements, or damaging underground utilities. These mistakes can lead to costly fines, legal disputes, or delays.

Streamline Permitting

Many Colorado cities require a survey as part of the ADU permitting process. Submitting a complete and accurate survey can help avoid delays during plan review and ensure your application is approved quickly.

Optimize Design

A detailed survey helps architects and builders create a design that maximizes your property’s potential. For example, understanding the topography can guide decisions about the ADU’s placement and foundation type.

When Do You Need a Survey for an ADU in Colorado?

Not every ADU project requires a survey, but in many cases, it’s highly recommended—or even mandated. Here are the most common situations where an ADU survey is needed:

1. Determining Property Boundaries

Cities like Denver and Boulder have strict setback requirements for ADUs, often requiring a minimum distance between your unit and the property line. A survey ensures your plans align with these regulations.

2. Addressing Zoning Compliance

If your property is located in a zone with specific ADU regulations, a survey helps verify compliance. For example, Fort Collins mandates that ADUs meet detailed height and size restrictions based on lot dimensions.

3. Managing Utility Placements

If your ADU requires new utility connections or upgrades, a survey maps existing utility lines to avoid costly mistakes during construction.

4. Satisfying Permit Requirements

Some cities in Colorado require a survey as part of the permitting process, especially for complex projects or properties in high-density areas.

Types of Surveys for ADU Projects

Several types of surveys may be required depending on your ADU’s scope and location. Here’s a breakdown of the most common options:

1. Boundary Survey

This survey focuses on defining the exact property lines and is often the first step in the ADU process. It’s crucial for ensuring compliance with setback regulations.

2. Topographic Survey

A topographic survey provides a detailed map of your property’s elevation, slopes, and natural features. It’s essential for properties with uneven terrain or drainage considerations.

3. ALTA/NSPS Survey

This comprehensive survey is typically required for financing or title purposes. It includes boundary lines, easements, and improvements and ensures the property is free of encroachments.

4. Utility Survey

A utility survey maps out existing underground utility lines, helping to avoid damage during construction. This survey is particularly important when trenching for water, gas, or electricity.

5. Construction Staking Survey

This type of survey marks the exact locations where the ADU will be built on your property, ensuring the structure aligns with approved plans and zoning requirements.

Cost of ADU Surveys in Colorado

The cost of an ADU survey varies depending on the type and complexity of the survey, as well as the size and location of your property. Here’s what you can expect:

Note: Prices may vary based on regional demand and property-specific challenges.

Colorado Cities: ADU Survey Requirements

Each city in Colorado has unique requirements for ADU surveys. Here’s a quick overview:

Denver

  • Requires boundary and topographic surveys for ADUs in most residential zones.
  • Strict setback and height regulations necessitate precise measurements.

Boulder

  • Mandates a survey for ADUs over a certain square footage.
  • Properties in flood zones may require additional elevation data.

Fort Collins

  • Encourages surveys for all ADU projects to streamline the permitting process.
  • Topographic surveys are common for properties with significant slopes.

Golden

  • Survey requirements depend on the property’s location and zoning designation.
  • Utility surveys are often needed for older neighborhoods.

Douglas County

  • Surveys are typically required for rural properties to ensure compliance with larger setback requirements.

How to Choose a Surveyor for Your ADU Project

Selecting the right surveyor is key to ensuring accurate results and a smooth ADU build. Here are some tips:

  1. Check Credentials: Ensure the surveyor is licensed in Colorado and experienced with residential projects.
  2. Get Recommendations: Ask your ADU builder or local planning department for trusted surveyor referrals.
  3. Compare Quotes: Obtain estimates from multiple surveyors and compare their services and timelines.
  4. Verify Insurance: Confirm the surveyor carries liability insurance to protect against errors.

7 Tips to Streamline Your ADU Survey Process

  1. Start Early: Initiate the survey process as soon as possible to avoid delays.
  2. Share Your Plans: Provide your surveyor with preliminary ADU designs to ensure alignment with your vision.
  3. Understand Local Requirements: Research your city’s specific survey needs to avoid surprises.
  4. Coordinate with Your Builder: Work closely with your ADU builder to integrate survey results into your project timeline.
  5. Double-Check Easements: Ensure no part of your ADU infringes on utility or shared access easements.
  6. Account for Slopes: If your property has uneven terrain, consider a topographic survey to address grading needs.
  7. Keep Documentation Handy: Maintain copies of all survey documents for future reference.

Why Surveys Matter for Your ADU’s Success

A well-executed survey lays the groundwork for a successful ADU project by:

  • Ensuring compliance with local regulations.
  • Avoiding costly mistakes and construction delays.
  • Providing clarity and confidence in your project’s feasibility.

At Kindred Tiny Homes, we understand the value of a thorough survey. Our team works hand-in-hand with experienced surveyors to make sure every detail is accounted for, so your ADU project stays on track and within budget.

Conclusion

Navigating the ADU survey process in Colorado may seem daunting, but with the right guidance, it can be a straightforward step in your journey to building the perfect accessory dwelling unit. Whether it’s defining property lines, understanding setbacks, or mapping utilities, surveys are essential for ensuring your ADU complies with local regulations and avoids costly pitfalls.

At Kindred Tiny Homes, we’re committed to making the ADU process as seamless as possible. From surveys to construction, our one-stop-shop approach ensures every step is handled with professionalism and care. Contact us today to learn more about starting your ADU project in Colorado.

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