What is the cost to build a 10x16 deck with built-in seating in Moncton NB?

A 10x16 deck (160 sq ft) in Moncton will typically run $4,000–$12,000+ depending on material choice, with built-in seating adding another $800–$2,500 on top of the base deck cost.

The material you choose is the biggest cost driver. In pressure-treated lumber — the most popular choice in Moncton — you're looking at roughly $4,000–$6,400 for the deck itself (at $25–40/sq ft installed). Step up to composite like Trex or TimberTech and that range jumps to $7,200–$10,400, with premium composite or PVC pushing toward $12,000+. These prices include footings, framing, decking boards, and standard railings.

Built-in seating adds cost based on complexity. A simple bench with a 2x4 pressure-treated frame and decking boards runs $800–$1,500 for a typical 10–12 foot run. If you want composite-wrapped benches with backs, storage underneath, or decorative trim, budget $1,500–$2,500. Built-in seating is also a smart way to meet railing requirements — when designed properly, a perimeter bench can serve as your guard rail, which can offset some of the railing cost.

What's Included in That Price

A properly built deck in Moncton requires footings at 1.2 metres deep (Moncton's frost depth) — this is non-negotiable. Footings that don't reach below the frost line will heave every spring, cracking boards and shifting your frame. Your quote should always include concrete footings, pressure-treated structural framing (posts, beams, joists), decking boards, and a ledger board properly lag-bolted and flashed to your house if it's attached.

Railings are required by NB Building Code when your deck surface is 600mm (24") or more above grade — budget $30–60/linear ft for wood, $50–100/linear ft for aluminum. A 10x16 deck with three open sides could have 36+ linear feet of railing, adding $1,000–$3,600 depending on style.

Permits in Moncton

An attached deck or one over 24" high requires a building permit from the City of Moncton — budget $100–$200 for permit fees and factor in 2–4 weeks for approval. Your contractor should handle this, but confirm it's included in their quote. Skipping the permit creates problems when you sell your home.

Practical Tips Before You Get Quotes

Get at least three quotes from local Moncton builders and make sure each quote specifies the same scope — footing depth, lumber grade, decking material, and whether permit fees are included. Ask each contractor for proof of WorkSafeNB coverage and liability insurance before signing anything. Prices can vary significantly between contractors, and the lowest bid isn't always the best value when structural work is involved.

Timing matters too — Moncton's peak building season runs June through August, and contractors book up fast. If you're planning a summer build, reaching out in March or April gives you the best shot at your preferred timeline.

New Brunswick Decks can match you with local Moncton deck builders at no cost — get matched and request free estimates through the New Brunswick Construction Network to compare your options.