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Drawing requirements for a Residential Building Permit

Drawing requirements for a Residential Building Permit

What is a Site Plan?
A Site Plan is a drawing showing the complete property and identifying all structures in relation to the property boundaries. It should include:

  • Scale
  • North arrow
  • Lot lines and dimensions
  • Existing and proposed construction and dimensions
  • Setbacks and lot lines
  • Proposed changes to existing grade

What is a Floor Plan?
A Floor Plan is a drawing of the structure as seen as if it is cut horizontally a few feet above the floor lines. One floor plan is required for every floor of the house which is affected by the new construction. Each plan shows the interior layout in question as well as providing the structural framing information for the floor or roof above. Floor plans should include:

  • Scale
  • Use of rooms and spaces
  • Dimensions
  • Extent of new construction including new work within existing building
  • Size, type and location of exterior and interior walls and partitions
  • Widths, locations and lintel sizes of all openings
  • Location, dimensions and direction of stairs
  • Sectional arrows
  • References to detailed drawings
  • Material specifications or notes
  • Heating details and calculations

What are elevations?
Elevations show the exterior view of each side of the house. Each elevation is identified by the direction it is facing and should include:

  • Scale
  • Extent of new and existing construction
  • Vertical dimensions of walls, windows and doors
  • Grade level
  • Exterior wall cladding, finishes and flashing
  • Overhang dimensions
  • Roof shape, slope and finish
  • Rainwater leader and eavestrough

Sections & Details
A section represents a view of the house along an imaginary line at a particular location and illustrates construction details. The extent of the sections should correspond with the sectional arrows shown on the plans. Sections should indicate the following:

  • Scale
  • Details of footings, foundations, walls, floors and the roof
  • Distance from grade to floor and underside of footing
  • Attic and crawl space ventilation


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