Deck Building Cost in Maryland
2026 estimates — composite, pressure-treated, and hardwood
300 sqft composite deck, single level, Maryland labor rates. Updated June 2026.
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Deck Cost by Material — Maryland 2026 (300 sqft)
| Material | 300 sqft (MD) | Per sqft |
|---|---|---|
| Pressure-treated lumber | $7,080 | $24/sqft |
| Cedar | $9,558 | $32/sqft |
| Composite (Trex, TimberTech) | $12,390 | $41/sqft |
| Tropical hardwood (Ipe) | $16,992 | $57/sqft |
Installed including framing, hardware, and labor. Maryland rates applied. Railing not included above.
Building a Deck in Maryland — What to Know
1. Maryland Costs vs. National Average
Deck building in Maryland is above the national average (cost index: 1.18×). A 300 sqft composite deck averages $12,390 — composite costs 75% more than pressure-treated but requires virtually no maintenance.
2. Best Deck Material for Maryland
Get permits before building in Maryland — unpermitted decks cause major issues at resale. Get 3 contractor bids — deck pricing varies 20–35% between builders. Composite decking costs more upfront but eliminates annual maintenance costs ($300–$600/year for staining wood).
3. Permits & Requirements in Maryland
Most decks over 30 inches above grade require a building permit in Maryland. Permit costs average $200–$600. Attached decks require structural assessment of the ledger board connection to your home. Always pull permits — unpermitted decks must be disclosed at sale and can require removal.
FAQs — Deck Cost in Maryland
Deck building in Maryland costs $10,030 on average for a 300 sqft composite deck in 2026 — above the national average. Pressure-treated lumber decks run $7,080 for the same size; composite runs $12,390.
In Maryland, composite decking (Trex, TimberTech) costs $12,390 vs $7,080 for pressure-treated wood for 300 sqft. Composite has a 25–50 year warranty and requires no annual staining ($300–$600/year for wood). Most Maryland homeowners choose composite for its long-term value.
Most Maryland municipalities require permits for decks over 30 inches above grade, attached decks regardless of height, and decks over 200 sqft. Permit costs range $200–$800. Always pull permits — unpermitted construction must be disclosed at home sale and can result in forced removal.
Deck railing adds $1,500–$4,500 for a typical 60 linear foot deck in Maryland. Pressure-treated railing runs $1,770 installed; composite railing $2,832; cable railing $4,248. Aluminum and composite railings require zero maintenance and are often the best long-term value.
Deck lifespan varies by material: pressure-treated lumber lasts 15–20 years with annual staining ($300–$600/year); cedar lasts 20–30 years; composite (Trex, TimberTech) lasts 25–50 years with minimal upkeep; tropical hardwood (Ipe) lasts 40–75 years. Maryland's climate and precipitation levels affect how quickly wood degrades — composite is a better investment in states with significant rain or temperature swings.
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Get Free Quotes on AngiMaryland Deck Summary
- →Composite avg: $12,390 / 300 sqft
- →PT lumber: $7,080 / 300 sqft
- →Range: $7,523 – $14,042
- →Cost index: above national avg