Property Setbacks Explained for Homeowners

Property setbacks are a major part of residential zoning and site-plan review.

They can affect the placement of:

• New houses
• Home additions
• Detached garages and carports
• Sheds and workshops
• Decks and porches
• Swimming pools and spas
• Patio covers and pergolas
• Accessory dwelling units
• Retaining walls
• Fences and gates
• Driveways and parking areas
• Mechanical equipment

A project may fit physically within the yard but still conflict with zoning setbacks, an easement, a recorded building line or another property restriction.

That is why setbacks should be checked before the project location is finalized—not after construction drawings have already been completed.

What Is a Property Setback?

A property setback is the required minimum distance between a building, structure or improvement and a designated property or zoning line.

Depending on the local regulations, the distance may be measured from:

• A legal property boundary
• A street right-of-way line
• A recorded building line
• An environmental buffer
• A shoreline or waterway
• Another structure
• A public utility or drainage easement

The ordinary front, side and rear zoning setbacks are usually measured from legal property boundaries.

They are not normally measured from:

• The curb
• The edge of pavement
• A sidewalk
• A fence
• A hedge
• A retaining wall
• An approximate online parcel line

Those visible features may be offset from the legal boundary.

The Main Types of Residential Setbacks

Front setback

The front setback controls how close a building or improvement may be placed to the front property line.

The front property line is not necessarily the curb or edge of the road.

The public right-of-way may extend behind:

• The curb
• The sidewalk
• The drainage ditch
• The utility strip
• The apparent front edge of the yard

On some properties, the required front setback is a fixed distance.

On others, it may be affected by:

• The established alignment of nearby houses
• A platted building line
• The zoning district
• The width of the right-of-way
• A neighborhood or design overlay
• The proposed building type

Rear setback

The rear setback is the required distance from the rear property line.

It commonly affects:

• Rear home additions
• Detached garages
• Sheds
• Decks and porches
• Pools and spas
• Patio covers
• Accessory dwelling units

The rear lot line is not always the boundary farthest from the street. Irregular, triangular, through and corner lots may be classified differently under local zoning rules.

Interior side setback

The interior side setback applies along a boundary shared with another private property.

It can affect:

• Side additions
• Garages and carports
• Accessory structures
• Mechanical equipment
• Pool equipment
• Driveways and parking areas

Some zoning codes use one minimum side setback for each side. Others require a minimum on each side plus a larger combined total.

Street-side setback on corner lots

A corner lot commonly has two boundaries adjoining streets.

The property may have:

• One front yard
• One street-side yard
• One interior side yard
• One rear yard

The street-side setback may be larger than the ordinary interior side setback.

Corner properties can also be affected by:

• Visibility triangles
• Driveway-location rules
• Fence-height restrictions
• Utility and right-of-way conditions
• Two street-facing design requirements

Setback vs Easement vs Building Separation

These terms are related, but they do not mean the same thing.

A project can comply with the zoning setback and still conflict with an easement.

It can also satisfy the property-line setback but be too close to another structure under applicable building or fire-resistance rules.

The site plan should therefore show:

• Property-line distances
• Known easements
• Recorded building lines
• Distances between buildings
• Relevant utilities and access areas

How Setback Requirements Are Determined

There is no universal setback that applies to every residential project.

The required distance can depend on:

Additional requirements may arise from:

• Floodplain regulations
• Wetland or stream buffers
• Private well and septic requirements
• Fire-separation provisions
• Utility easements
• Homeowners’ association rules
• Deed restrictions

An online zoning map is a useful starting point, but the mapped zoning district alone may not reveal every property-specific restriction.

Read Setbacks and Zoning: How to Find the Rules for Your Property for a step-by-step research process.

How Property Setbacks Are Measured

A setback is commonly measured as the shortest horizontal distance between the legal property line and the regulated part of the proposed structure.

The exact measurement point can vary.

Depending on the local code and project, the setback may be measured to:

• The foundation wall
• The exterior wall
• The nearest supporting post
• The edge of a deck platform
• The waterline of a pool
• The outside edge of a pool deck
• A roof overhang or eave
• An exterior stair or landing
• A mechanical-equipment pad
• The face or footing of a retaining wall

Do not assume that the foundation is always the only measurement point.

The permit authority may treat projections differently from the primary structure.

Roof Overhangs, Stairs and Other Projections

A structure’s wall may meet the required setback while another feature extends closer to the property boundary.

Features that may affect the setback relationship include:

• Roof eaves
• Gutters
• Bay windows
• Cantilevered floors
• Chimneys
• Deck edges
• Exterior stairs
• Landings
• Balconies
• Porch roofs
• Mechanical equipment

Some codes allow limited projections into a required setback. Others impose separate projection limits or require the feature to remain fully outside the setback.

A site plan should show any projection that meaningfully changes the closest point to the property line.

Special Lot Configurations

Corner lots

Corner lots commonly have a front yard and a separate street-side yard.

Do not assume the boundary beside the second street follows the ordinary interior side setback.

Through lots

A through lot extends between two streets.

Depending on the local zoning definitions, it may have:

• Two front yards
• No conventional rear yard
• Special access or driveway restrictions

Flag lots

A flag lot commonly has a narrow access strip connecting the main portion of the property to the street.

The zoning code determines which property line is treated as the front and how setbacks are measured around the main building area.

Irregular and pie-shaped lots

Angled or curved boundaries can make a single setback dimension misleading.

The site plan may need:

• Several measurements along the proposed structure
• The shortest distance to each angled boundary
• Arc or curve information
• A licensed survey when the boundary cannot be established reliably

How Setbacks Apply to Common Residential Projects

Home additions

An addition changes the exterior footprint of the principal building.

A site plan for an addition should normally show:

• Existing house footprint
• Proposed addition footprint
• Addition dimensions
• Distances to the relevant property lines
• Roof and eave projections
• Stairs and landings
• Distances to detached buildings
• Remaining yards and open space

Detached garages, sheds and accessory structures

Accessory structures may follow setback rules different from those applying to the main house.

The requirements may change according to:

• Building area
• Height
• Number of stories
• Whether the structure is attached or detached
• Whether it is in a rear or side yard
• Whether it contains a dwelling unit
• Whether it is accessed from an alley

A small shed may be exempt from a building permit while still being required to comply with zoning setbacks and easements.

Decks, porches and stairs

A deck setback may be measured to:

• The outer edge of the platform
• Supporting posts
• Stairs
• Landings
• A roof or covered section

An uncovered deck may be treated differently from a covered porch or enclosed addition.

Swimming pools and spas

Pool regulations may measure setbacks from:

• The pool wall
• The waterline
• The pool deck
• The equipment pad
• A retaining wall
• The safety barrier

The permit authority’s definition controls. Do not assume the edge of the water is always the required measurement point.

Fences

Fences may not use the same setbacks as buildings.

They can instead be regulated through:

• Maximum height
• Front-yard placement
• Corner visibility
• Opacity
• Gate direction
• Pool-barrier requirements
• Right-of-way restrictions

A fence should not be used as proof of the legal boundary unless a reliable survey confirms its location.

How Setbacks Should Appear on a Site Plan

A site plan should show the actual proposed distances—not only generic setback lines.

A clear residential site plan commonly includes:

Setback dimensions should:

• Be readable
• Use consistent units
• Measure to the correct project feature
• Agree with the proposed location
• Match the construction drawings
• Identify the relevant property line

Do not expect the permit reviewer to calculate the distance from the drawing scale.

For more guidance, read What Permit Reviewers Check First on a Site Plan .

How to Find the Setbacks for Your Property

Use official zoning information

Look for:

• Official zoning map
• Zoning ordinance
• Dimensional standards table
• Accessory-structure regulations
• Project-specific permit checklist
• Recorded subdivision plat
• Property-specific zoning approvals

A neighbor’s project is not a reliable substitute for checking your own property.

Nearby properties may have:

• Different zoning
• Different lot dimensions
• A variance
• Legal nonconforming status
• A different recorded building line
• An older approval under previous regulations

How to Confirm the Property Lines

The proposed setback is only as reliable as the property boundary used to measure it.

Potential property sources include:

• Licensed boundary survey
• House-location survey
• Recorded subdivision plat
• Previous approved site plan
• Title documents
• Property-corner monuments

GIS maps, aerial images and assessor records can support preliminary research, but they should not automatically be treated as surveyed legal boundaries.

A licensed land surveyor may be needed when:

• No reliable survey is available
• Property corners cannot be located
• The project is close to a boundary
• The lot is irregular
• Available records conflict
• An easement location is uncertain
• A boundary dispute exists
• The permit authority requires certified information

What Happens When a Project Does Not Meet the Setback?

A project that does not meet the required setback may need to be:

• Moved farther from the property line
• Reduced in size
• Reconfigured
• Changed from covered to uncovered
• Redesigned to remove a projection
• Submitted for zoning relief

Depending on the jurisdiction, zoning relief may be called:

• A variance
• A setback variance
• An adjustment
• An administrative modification
• A special exception

Approval is not automatic.

The process may require:

• An application
• A detailed site plan
• A filing fee
• Owner authorization
• Public notice
• Neighbor notification
• A hearing
• Evidence supporting the request

Do not position the project in a setback and assume a variance will be granted later.

HOA Setbacks and Private Restrictions

A homeowners’ association or recorded covenant may impose placement rules separate from government zoning.

Private rules may address:

• Minimum distance from property lines
• Accessory-building locations
• Pool placement
• Fence location and height
• Architectural appearance
• Materials and colors
• Landscape buffers

A city permit does not automatically grant HOA approval.

HOA approval also does not replace the required government permit.

When both apply, the project may need to satisfy the more restrictive standard.

Common Property-Setback Mistakes

• Measuring from a fence instead of the legal property line
• Measuring from the curb instead of the front property boundary
• Using an approximate GIS parcel line as a surveyed boundary
• Checking the setback for the wrong zoning district
• Assuming the same setback applies to every project type
• Using the principal-building setback for an accessory structure without verification
• Ignoring a street-side setback on a corner lot
• Failing to show roof overhangs or eaves
• Omitting stairs, landings or deck edges
• Showing only a required setback line without the actual proposed distance
• Ignoring a recorded building line
• Ignoring an easement because the zoning setback is satisfied
• Failing to show the distance between buildings
• Assuming a permit exemption also means a zoning exemption
• Relying on a neighbor’s project as proof of what is allowed
• Finalizing construction plans before confirming the project location

A complete drawing cannot eliminate every review comment, but it can avoid corrections caused solely by omitted or unclear site information.

Read Why Site Plans Get Rejected for Permits .

Property Setback Checklist for Homeowners

Property Setback and Permit Guides by City

Setback distances and measurement rules are controlled locally. The guides below explain common residential site-plan considerations in five cities, including how proposed work may need to be shown in relation to property boundaries, easements, access areas and existing structures.

Related Site Plan Guides

Frequently Asked Questions

What is a property setback?

A property setback is the minimum required distance between a building or improvement and a property boundary or other regulated line.

Are setbacks measured from a fence?

Not automatically. Setbacks are generally measured from the legal property boundary. A fence may be located on, inside or occasionally across that boundary.

Is the front setback measured from the curb?

Usually not. The legal front property line or applicable right-of-way line may be located behind the curb, sidewalk or drainage area.

Do all residential properties have the same setbacks?

No. Setbacks can vary according to jurisdiction, zoning district, project type, lot configuration, structure height, recorded plat and property-specific approvals.

Do sheds have the same setbacks as houses?

Not necessarily. Accessory structures frequently follow different location, height and setback rules from principal buildings.

Does a permit-exempt shed still need to meet setbacks?

Usually, yes. A building-permit exemption does not automatically waive zoning, easement or private-property restrictions.

Do roof overhangs count toward the setback?

They may. Some jurisdictions permit limited eave projections, while others regulate them separately. Confirm the required measurement point.

Are pool setbacks measured from the water?

It depends on the local definition. The measurement may be taken from the waterline, pool wall, deck, equipment or another feature.

What setback applies to a corner lot?

A corner lot commonly has a front setback and a separate street-side setback. Visibility, fence and driveway rules may also apply.

Can an easement overlap a setback?

Yes. A project may satisfy the zoning setback while still being located inside an easement. Both restrictions must be reviewed.

What happens when my project does not meet the setback?

The design may need to be moved, reduced or reconfigured. Zoning relief may be available in some jurisdictions, but approval is not guaranteed.

Do I need a survey to show setbacks?

A survey may be required when property lines are uncertain, the project is close to a boundary, existing records conflict or the permit authority requires professionally verified information.

Can a drafted site plan establish legal property lines?

No. A drafted plan uses supplied surveys, plats, records and measurements but does not independently locate or legally certify property boundaries.

Are USA Site Plans drawings signed or sealed?

No. USA Site Plans provides drafting services. Licensed surveying, architecture, engineering and professional seals must be obtained separately when required.

Will showing the setbacks guarantee permit approval?

No. The reviewing authority controls the decision and may request corrections, a licensed survey, professional design, zoning relief or additional supporting documents.

Disclaimer: This article provides general educational information and is not legal, surveying, engineering, architectural, zoning or permitting advice. Setback requirements vary according to the jurisdiction, zoning district, property, project, recorded documents and current regulations. USA Site Plans is an independent drafting service and is not affiliated with a government permit authority. A drafted site plan does not establish legal property boundaries or replace a licensed survey, architecture, engineering or another professionally certified document when required. Confirm current setback and measurement requirements with the authority reviewing the application.