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Deck plans for permits and construction

Turn a rough deck size into drawings that explain how the deck fits the house, how it is supported, and how people move safely between the yard and the door.

Plan your deck
  • Joists, beams, and footings
  • Stairs and guards
  • Dimensions for permit review
Deck framing plan showing the house, joists, beams, posts, concrete footings, stairs, and dimensions

More useful than a footprint alone

A deck plan needs to connect geometry with structure. The footprint sets the usable area, but the drawings also need to show how loads reach the ground, where stairs and guards go, and how the deck attaches to or stays independent from the house.

Common searches such as 12×8 deck plans and 8×12 deck plans describe the same footprint, but the orientation against the house changes the beam span, joist direction, stair location, and number of supports. Those decisions belong in the drawings, not in assumptions made on site.

How it works

  1. 01

    Sign in and size the deck

    Enter the property, width, projection, elevation, door connection, furniture zones, and stair location.

  2. 02

    Coordinate layout and structure

    HomeCat checks zoning and coordinates joists, beams, posts, footings, decking, stairs, guards, and attachment.

  3. 03

    Save plans and quantities

    Save the design and export measured drawings, material quantities, and the permit-ready project package.

Project measurements and costs

HomeCat keeps the project dimensions connected to material quantities and cost inputs as the plan changes.

Primary measurements
Deck Footprint And Height
Additional dimensions
Stairs Guards And Landings
Units
Metric + imperial

Measured project details

  • Deck Footprint And Height

    HomeCat captures deck length, depth, finished height, house attachment, property clearances, and the usable area around doors and furniture.

  • Stairs Guards And Landings

    HomeCat calculates stair rise and run, landing sizes, guard lengths, handrail runs, gate openings, and clear walking routes.

  • Joists Beams And Footings

    HomeCat lays out joist spans, beam lines, post spacing, footing locations, cantilevers, and ledger dimensions as one coordinated structure.

Material and cost inputs

  • Framing Lumber Takeoff

    Joist, beam, post, ledger, stair, and blocking layouts support piece counts and lengths for the structural lumber package.

  • Decking And Guards

    Measured surface area and perimeter lengths organize pricing for deck boards, fascia, fasteners, guards, handrails, and gates.

  • Footings And Hardware

    The footing grid and connection details support quantities for concrete, anchors, hangers, post bases, bolts, and flashing.

What homeowners usually ask

Does HomeCat check my property's zoning requirements?

Yes. HomeCat automatically checks the property's zoning requirements and uses them to guide the project. It also flags permit or professional-review items that still need attention.

What should 12×8 deck plans include?

They should show which 12-foot edge meets the house, the 8-foot projection, joist direction and spacing, beam and post locations, footings, stairs, guards, and key dimensions. Reversing the orientation can change the framing layout.

Do deck permit drawings need a site plan?

Often, yes. The site plan shows where the deck sits on the property and lets the reviewer check rear and side-yard setbacks, lot coverage, and nearby structures.

Can the same plans be used for material estimates?

Yes. Once the size and structural layout are resolved, the framing plan can support quantities for decking, joists, beams, posts, footings, stairs, and guards.

Does every deck need a building permit?

No. Permit triggers can depend on height, attachment, size, and exits. HomeCat checks the property's zoning automatically and flags the permit requirements that apply to the proposed deck.

Related plans and guides

Site plans

Document the deck location and setbacks on the property.

Toronto site plan guide

Find the local sources used for a Toronto residential site plan.

Building permit drawings

See the complete set of drawings that can support a permit.