Deck Porch or Patio Specifications

Before any construction can begin, construction plans must be approved by the Department of Building & Safety.  This requirement applies not only to new construction, but also to work that physically alters a structure.  It also covers any work regulated by the Michigan Building Code, Michigan Residential Code and/or City Ordinance

Decks, Porch or Patio Permits
All plans must be approved by the Department of Building & Safety prior to construction.

This requirement applies not only to new construction, but also to any work that physically alters a structure.  It also covers any work regulated by the Michigan Building Codes, Michigan Residential code and/or City Ordinance.
 

  • All decks, porches and patios must be built in accordance with the Michigan Residential Code.
  • All decks porches and patios require a building permit.
  • Guardrails are required on structures thirty (30) inches above the floor or grade below and shall not be less than 36 inches in height.
  • Open side of stairs with a total rise of more than thirty (30) inches above the floor or grade below shall have guards.
  • Guard openings on stairways, raised floor areas, balconies and porches shall have intermediate rails or ornamental closures which do not allow passage of a sphere four (4) inches in diameter.
  • Stairs with four (4) or more risers require a handrail installed 34” – 38” above tread nosing.
  • Stairs – the maximum riser height shall be 8 ¼ inches and the minimum tread depth shall be 9 inches.  There shall not be a variance of more than 3/8 of an inch based on the smallest riser or tread.
  • Open risers shall not be constructed in a manner to allow a four (4) inch sphere to pass between them.
  • Closed or solid risers require a nosing not less than ¾ of an inch or greater than 1 ¼ inches.  Nosings are not required for stairs with tread depth of eleven (11) inches or more.
  • An open, unenclosed porch, paved patio, or terrace may project into a required front yard for a distance not exceeding ten (10) feet.
  • Decks and porches with roofs shall be considered part of the principal building for purposes of determining setbacks.
     

Requirements for Permit Submittal
A completed application for permit must be submitted. If the proposed project will have a roof/canopy over it, a “long form” building application is required. Non-covered, unenclosed structure proposals may use the “short form” application.

A detailed plot plan showing all items on the property, including residence, garages, sheds, pools, driveways, walks or any other items on the property.

All power lines must be shown.  Distance/measurements from the deck, porch, patio to all items or structures adjacent to the proposed deck, patio or porches must be provided.

A detailed drawing showing the following information: All lumber dimensions and types Post spacing – depth of posts or an approved anchoring process. Assembly techniques (screws, nails, bolts, etc.), sizes and where they will be used. Handrail, stairway, guardrail details All elevations; all items shall be dimensioned.