Drag to rotate • Scroll/pinch to zoom • Tap a glowing deck edge to toggle its railing

ROUGH ESTIMATE $0

STEP 1 OF 8

Start with the house

Match the rear of the home first so the deck can wrap around corners and bump-outs properly.

For the most accurate estimate, use real measurements.Deck width, depth, height, stairs and railing lengths all affect the price. If you need an add-on, shape or feature that is not shown in this builder, contact us and we can help with a custom design.

House shape

Exterior finish

Patio door position

House width 44 ft

House dimensions stay independent from the deck, so changing deck depth will not change the house L-shape or bump-out.

STEP 2 OF 8

Size the deck

Choose the main footprint. Larger dimensions are available for bigger backyard and commercial-style layouts.

Net deck area: Any house bump-out or L-shaped wall that occupies part of the deck footprint is automatically subtracted from the square footage and price. The width/depth controls are the outside deck dimensions.

Deck shape

Width along house 16 ft

Depth from house 12 ft

Exact width (ft)

Exact depth (ft)

STEP 3 OF 8

Choose the deck levels

Your main deck stays exactly as you sized it. Add a separate second-storey deck above it only if you want one.

Main deck height

Main deck height 3 ft

Second-storey deck

Conceptual visualization only. Final framing, footings, guards, stairs and structural details must be confirmed for the actual property and applicable requirements.

STEP 4 OF 8

Choose the decking

Board colour

Board layout

STEP 5 OF 8

Design the railings

Use the buttons below or tap the glowing deck edges directly in the 3D view.

Railing style

Railing posts are shown at a maximum of about 6 ft on-centre. House-attached edges are excluded. Stair openings are removed automatically.

STEP 6 OF 8

Build the stairs

Include stairsAdd stairs to the design and estimate

Stair style

Tip: drag the gold handle directly in the 3D view to move standard stairs.

Main deck stair side

On an L-shaped deck, Left and Right refer to the original main deck only. The L extension has its own stair controls below.

Main stair width 4 ft

Exact widthft

Position along main edge 50%

Railings on stairs

Approx. steps5Total stair width4 ftStair allowance$0

Main / low / wrap-around stair allowance uses $100 per step for each 4 ft of total stair width. Upper-storey stairs use $250 per step for a 4-ft-wide run and scale with width. Standard/full-width stair railings are priced separately using the selected railing rate. Wrap-around stairs are intentionally shown open without stair railings.

STEP 7 OF 8

Finish the details

Picture-frame borderBorder follows the exposed deck outlineVisual Fascia boardDeck-board-width fascia on exposed edgesVisual Deck skirtingVertical boards around the exposed lower deck perimeterMaterial allowance Step lightingWarm low-voltage lights built into stair risersPriced

Skirting includes a material allowance based on its face area. Step lighting now adds a planning allowance to the estimate. Picture framing and fascia remain visual-only until you set exact rates for them.

STEP 8 OF 8

Your deck concept

ROUGH PLANNING ESTIMATE$0

See estimate calculation

This builder provides a rough planning estimate only and is not a quote. Site conditions, demolition, access, permits, engineering, framing requirements, footing requirements, final product selections and other project details can change the final price.

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3D Deck Builder & Cost Calculator for Milton, Ontario

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