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Detached garages and sheds


Important terms

Accessory residential building: a covered building that is not attached to a house. Accessory residential buildings include: detached garages, sheds, carports, pergolas, gazebos, arbours, green houses and playhouses.

Backyard suite: a self-contained dwelling unit located in a detached building that has separate living, cooking, sleeping and bathroom facilities. These are commonly referred to as carriage houses, garage suites, garden suites, or laneway homes.

Before you start

If your structure will be connected to a house in any way, the structure would be considered an addition. For example: a pergola, shed or carport that is attached to a house, a front or rear attached garage. Please visit additions for more information.

If you are building a pergola that is on a deck you may require a development permit and will also have to make a deck application. Please visit uncovered decks and balconies for information on deck applications.

If you are building a structure for the purpose of developing a backyard suite, which is considered a secondary suite, please visit secondary suites and backyard suite​s.

What permits do I need?

The scope of work being performed will dictate what permits are required. If a development permit is required, this must be applied for and approved prior to building permit and trade permit applications.

When is a building permit required?

A building permit is required when:

  • The overall area of the structure exceeds 10 m2.
  • The building is habitable.

When is a development permit required?

A development permit is required when:

  • Your proposed building is in the floodway or within 6.0 m of the floodway.
  • Your proposed structure does not meet the rules of the Land Use Bylaw (height, setbacks, parcel coverage, etc.).
  • The total area of the proposed structure and any existing accessory buildings are larger than the footprint of the house or exceeds 75 m2.

See the bylaw & code considerations section for examples of different scenarios where development permits are required.

When is a trade permit required?

As the homeowner, you are able to obtain homeowner’s plumbing, electrical and gas fireplace installation permits. To apply for a homeowner’s trade permit, you must be performing the work yourself, you must own the home with proof of ownership (in cases where the property has been purchased recently) and live in the home. If you are hiring a contractor, they must have a valid City of Calgary business licence and obtain the proper permits. It is the homeowner’s responsibility to ensure these permits have been obtained.

You cannot apply for a trade permit on behalf of a contractor. If your contractor is performing the work, they must apply for the applicable trade permit.

Risks when a permit is not obtained

If you, as a homeowner or contractor, do not have permits for work that has been started or completed, there could be consequences if you do not take action to correct the situation, such as:

  • Enforcement action issued by a City inspector.
  • A fine for building without a permit.
  • Having to undo work that has been completed.
  • Future legal and financial issues when selling your property or making an insurance claim.
  • Having to do more work than was originally planned and budgeted.

Note: As a homeowner, you are responsible for paying any penalties, even if you hired a contractor who assured you permits were not needed. If you are unsure if you need a permit, call the Planning Services Centre at 403-268-5311. Find out if your contractor has a City of Calgary business license with our licensed trade contractor list.

Existing structures requiring relaxation

If a structure has already been built and does not comply with the rules of the Land Use Bylaw, a relaxation application is required. The applicant applies for a development permit application to weigh the impacts of the non-compliant structure and evaluate whether a relaxation is appropriate. When making this type of application, use the requirements list for Relaxation of an Existing Structure.


We’re committed to providing you with a timely response on your permit application.

Development permit timelines vary, based on the type of application and the impacts to the community.

Most building permits for home improvement projects can be issued the same day as the application. However, sometimes a plans examiner will require a more in-depth examination of the application and the building permit is generally issued within a week.

Bylaw and code considerations

Inquiries about building, plumbing, gas, electrical or HVAC code or construction methods, building safety and fire regulations, please contact the Technical Assistance Centre​. For all other inquiries (for example, about the Land Use Bylaw), please call 403-268-5311.

Note: It is the responsibility of the applicant to ensure that the work being carried out conforms to any restrictive covenants, caveats or other restrictions that are registered on the land title.

Buildings under 10 m²

Accessory residential buildings under 10 m² in area typically do not require a building permit; however, the building must still follow the rules listed below to comply with the Land Use Bylaw.

Parcel coverage

Parcel coverage by all buildings cannot exceed a certain percentage of your total property size. This percentage is dictated by your specific land use district. To find out your land use district, please enter your address in the property information tool. See the graph below to determine your allowable lot coverage.

Land Use District Allowable Coverage (%) Parcel Area <= 300 m2
Parcel wdith < 10 m2
Parcel Area <= 300 m2
Parcel wdith < 8.7 m2
Parcel width > 11 m Semi-Detached / Duplex Row / Townhouse
40 x x x x x
45 x x x x x
R-C1N 45 50 x x x x
R-1N 50 x 60 45 x x
R-2 45 x x x 50 x
R-2M 45 x x x 50 60
*Parcel coverage rules for R-CG change as density increases.

Note: If the aggregate area of all accessory buildings is under 10 m2, those structures will not contribute to parcel coverage.

To calculate lot coverage, you will need to divide the footprint area of all applicable buildings by the property size.

(Total building area ÷ property area) × 100 = lot coverage per cent


Parcel coverage example
Parcel coverage example
  1. Use the property information tool and the graph above to figure out the allowable coverage for the property.
    R-C1 = 45%
  2. Calculate the property area.
    10.36 m × 32.0 m = 331.52 m2
  3. Add all applicable building areas:
    house: 77.2 m2
    covered deck*: 9.3 m2
    shed: 10.2 m2
    proposed garage: + 40.8 m2
    Total building area = 137.5 m2
  4. Divide the total building area by the property area and times that by 100 to get a percentage.
    total building area = 137.5 m2 × 100 = 41.47%
    property area = 331.52 m2

R-C1 allows for a maximum lot coverage of 45 per cent. Therefore, the proposal comes within the allowable lot coverage.

*Covered deck is only included in the calculation because it has a roof structure. Decks that are not covered should not be included.

Building setbacks

In most land use districts, the minimum building setback required is 0.6 m from a side or rear property line. When the side or rear property line is shared with a street, the garage must be 1.2 m from the property line.

The building may go up to the property line (as long as the property line is not shared with a street), as long as it meets all of the following requirements:

  • The eaves of the building are no closer than 0.45 m to the property line (see image below).
  • The exterior is maintenance-free (examples of maintenance-free materials include: vinyl, stucco) or the owner of the adjacent parcel grants a private maintenance easement.
  • All water drainage off of the building remains on the property.
  • The wall is fire rated with 5/8” type x drywall from floor slab to underside of roof sheathing to interior face of wall assemblies.
Eave distance from property line
Eave distance from property line


All accessory residential buildings must not exceed height requirements outlined in the Land Use Bylaw. The structure must:

  • Not be higher than 4.6 m from the finished floor.
  • Not be higher than 3.0 m (9'10") from the finished floor to the underside of the eaveline: the intersection of the wall and the roof structure at the highest point.
  • Be one storey in height, but can have an attic without windows, accessed by a removable ladder, used by the occupants of the house for storage. The attic is allowed to have maximum height of 1.5 m measured from the attic floor to the underside of any rafter.
garage height example
Garage height example

Separation from the main residential building

All accessory residential buildings must have a 1.0 m separation from the main residential building or house. When measuring to determine the minimum separation distance between a proposed accessory residential building and the main residential building, measure from the closest wall of each building (include second floor cantilevers, bay windows, etc.).

minimum distance from main residential building
Minimum distance from main residential building

Rooftop decks and balconies

Rooftop decks and balconies on accessory residential buildings are not permitted under the current Land Use Bylaw on accessory residential buildings without an approved development permit.

Semi-detached garages

Semi-detached garages straddle a property line. You will usually only see these when the house is a semi-detached dwelling. However, sometimes the owners of two single detached dwellings will build a semi-detached garage that straddles their common property line.

Two building permits are always required, whether the property has been subdivided or not. If the total garage area is over 75 m², a development permit is required.

Building near utility lines

Contact Alberta One-Call at 1-800-242-3447, to find out where your utility lines are before you build.

For information about building near or over gas lines, contact ATCO Gas at 403-245-7888.

If you have any questions regarding clearance from utility lines and boxes, contact ENMAX at 403-514-6100​.

No structures are permitted to be built in a utility right-of-way. 

Zero lot lines & maintenance access right-of-ways

Zero lot lines allow you to build up to your side property line. Zero lot lines commonly exist in conjunction with maintenance access right-of-ways on the opposite side of the lot and on adjacent lots. If your proposed structure projects into a maintenance access right-of-way, the document showing allowance for this type of construction must be presented at the time of application.

Lot grading

If your lane is not paved, it is recommended that a lane grade be established, so that your garage or carport floor will be at the correct elevation in relation to the lane. There is a fee for this service. Please contact Development Site Servicing at for more information.


Number of ​stalls required

Most properties require one parking space per dwelling unit, unless your property falls into one of the categori​es below. If you are unsure of your land use district, please enter your address into the property information bar. If your land use district is not noted below, then you require one stall per dwelling.

Two stalls per dwelling are required when located in:

  • R-C1N or R-1N and the parcel width is less than 9 m.
  • R-C2 or R-2 and the parcel width is less than 9 m or the parcel area is less than 270 m2.

Two stal​ls per parcel are required when located in:

  • R-2M and the parcel width is less than 9 m or the parcel area is less than 270 m2.

If yo​ur property is an irregular shape and you are unsure of your parcel width, please refer to the example below to see how to measure your parcel width and determine how many parking stalls are required.


Parking requirements can be met with a parking pad, driveway or a garage. The required parking stalls must not​ be located one in front of the other.

Note: many properties in Calgary were developed prior to the current bylaw and its parking requirements. There is also the potential that relaxations for parking were granted on an individual property. In these cases, the current parking requirements may not have to be met.

For i​nformation on additional parking required for secondary suites, visit

Stall size​ requirements

For the purpose of parking stall requirements, walls of a garage, fences and property lines are considered barriers.

Parking stall size requirements:

  • If the parking stall abuts two barriers the stall must be at least 5.9 m x 3 m.
  • If the parking stall abuts only one barrier the stall must be 5.9 m x 2.85 m.
  • If the parking stall abuts no barriers the stall must be 5.9 m x 2.5 m.

Parking ​pad

​Although a building permit is not required for a parking pad, if you plan on pouring a parking pad for the purpose of building a garage in the future you should consider the location after reviewing the previously listed Land Use Bylaw rules.

What documents do I need?

Where you live and the type of property you have will determine which requirement list you need to apply for a permit. Please read the content carefully and bring your completed documents, with drawings to the Planning Services Centre.

Sample drawings for building permits and development permits for detached garages and sheds.

Note: if you are using engineered roof trusses, only a site plan is required.


Book your inspections by contacting 311 and providing them with your permit number.

Generally, your project will require a rough-in and a final inspection for each building and trade permit pulled, though additional inspections may be required. You can contact 311 on the morning of your inspection to find out if it will be in the morning or afternoon.

Call before you dig

Always call Alberta One Call before you dig: 1-800-242-3447. For more information or to submit a locate request, visit Alberta One-Call.

Disclaimer: This information has no legal status and cannot be used as an official interpretation of the various bylaws, codes and regulations currently in effect. The City of Calgary accepts no responsibility to persons relying solely on this information. Web pages are updated periodically.​​​​​​​​​​​​​​​​​​​​​