Sample quote Decks and porches

Composite deck with a screened porch, Manotick

A rotted deck torn out and replaced with a larger composite deck, with a screened porch on one end and outdoor lighting.

A composite deck with railings and a screened porch at one end, lit in the evening behind a brick house — Illustration only; the quote prices the work listed, not everything shown in the picture.

The brief

The old deck has rotted posts and soft boards. The owners want it replaced with a larger composite deck, a screened porch at one end to keep the bugs off, and lighting and outlets for evenings.

Priced as: Raised deck, 320 sq ft, composite decking, rural Ottawa.

What it assumes

Composite. Composite decking with aluminum or composite railings, over a pressure-treated frame.
Raised deck. On posts more than 24 inches up, with railings, one set of stairs and a building permit.
Included. Layout, permit drawing and ordering; Footings below frost, framing and decking; Railings and one set of stairs; Permit fees and inspections, as required.
Not included. Roofed and screened areas, unless you add them; Furniture, planters and decor; Landscaping and restoring the lawn.
Prices. Based on published Ottawa and Ontario price guides, checked October 2026, and before HST unless a line says otherwise. They are estimates, not an offer. A firm written quote follows a site visit.

Task by task

Each task with its price and the stage of the job it belongs to. We book the right trade for each one.

Tasks and prices: Raised deck, 320 sq ft, composite decking, rural Ottawa
Task	Plan	Demo	Rough-in	Close-in	Finish	Price
Layout, permit drawing and orderingSite layout, the permit drawing and ordering materials.Plan	Plan					$700
Site prep and layoutClear the area, mark footings and protect the house.Demo		Demo				$1,000
Footings below frostConcrete piers or helical piles to frost depth.Rough			Rough-in			$3,300
Frame: posts, beams, joists and ledgerTreated framing, with a flashed and fastened ledger.Rough to Close			Rough-in	Close-in		$5,700
Decking boards, supply and installDecking, fasteners and edge boards.Finish					Finish	$10,800
Railings and guardsPosts, rails and balusters on the open sides.Close to Finish				Close-in	Finish	$6,900
StairsOne set of stairs with guards; longer and dearer the higher the deck.Close to Finish				Close-in	Finish	$3,200
Skirting, cleanup and final checksTrim, fastener checks and site cleanup.Finish					Finish	$950
Remove the existing deckTake apart and dispose of the old deck.Demo		Demo				$1,500
Screened porchRoof, posts, screens, a screen door and a finished ceiling.Rough to Finish			Rough-in	Close-in	Finish	$19,800
Lighting and outletsLow-voltage or line-voltage lighting and an outdoor outlet.Finish					Finish	$1,900
Project management, supervision and site costsScheduling and supervising each task, bin rental, site protection, insurance and final cleaning.Plan to Finish	Plan	Demo	Rough-in	Close-in	Finish	$3,900
Permits and inspectionsBuilding and electrical permit fees and inspections, as the work requires them.Plan	Plan					$800
Subtotal before HST						$60,450
HST (13%)						$7,859
Estimated total with HST						$68,309

Prices are estimates based on published Ottawa and Ontario price guides, checked October 2026. They are not an offer. A firm written quote follows a site visit.

What would change the price

The same job with one thing changed. Choose a row to open that version in the estimator.

How the total changes with one change to this sample quote
Change	Difference	New total
Cedar decking instead of composite	−$9,492	$58,817
Pressure-treated decking instead of composite	−$16,724	$51,585
No screened porch	−$24,182	$44,127
Add a gas line for a barbecue	+$1,130	$69,439

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