Deck installation costs in Greater Boston vary more than almost any other home improvement project — a small ground-level pressure-treated deck costs very differently from a large elevated composite deck. Here's what actually drives the cost and what to expect for a typical Boston residential deck project.
Pressure-treated lumber decks run $20–$35 per square foot installed in the Boston market — a 400 sq ft deck runs $8,000–$14,000. Composite decking (Trex, TimberTech, Azek) runs $40–$65 per square foot installed — the same 400 sq ft deck runs $16,000–$26,000. The composite premium is real but the maintenance cost difference over 10 years closes the gap: composite requires no staining or sealing; pressure-treated requires staining every 2–3 years at $500–$1,500 per application. Trex vs. wood cost comparison →
Elevation is the biggest cost driver. A ground-level deck requires minimal framing; a deck on the back of a Boston triple-decker at the second or third floor requires significantly more structural framing, ledger attachment engineering, and often a structural engineering review. Boston's soil conditions — particularly in areas like Allston, Brighton, and East Boston built on fill — may require deeper footing depths or larger diameter footings to reach bearing soil, adding $500–$1,500 per post location. HomeAdvisor deck cost data →
Any deck over 200 square feet or more than 30 inches off the ground requires a building permit from the Boston ISD. Permit applications require drawings showing deck layout, framing plan, and footing details. For elevated decks on multi-family buildings, a structural engineer's stamp may be required. Permit costs run $300–$800 for typical residential decks. We handle the permit process on all Boston deck projects. Unpermitted decks are a significant liability at home sale and may need to be demolished if discovered during a real estate transaction. Boston ISD deck permit requirements →
A straightforward ground-level deck takes 1–2 weeks from permit approval. Elevated, complex, or permit-intensive decks take 2–4 weeks of construction plus permit lead time (1–3 weeks for review). Composite decking material lead times in Boston have been running 2–4 weeks; pressure-treated lumber is generally available immediately. We schedule construction to start when materials are on-site and permits are approved. NADRA deck building standards →
Need Deck Installation in Boston?
AURA Painting Inc serves all Boston neighborhoods. Licensed MA #193121, fully insured, 2-year warranty. Free estimates — most jobs scheduled within the week.
Call (617) 777-7700 ← Back to Deck Installation