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Deck Building Cost in Maryland: 2026 Guide

Building a deck is one of the most popular home improvement projects in Anne Arundel and Howard Counties — and one of the most variable in cost. A basic pressure-treated deck and a custom composite build with built-in seating and lighting can differ by $40,000 or more in the same house. Here's what drives the cost and what you should expect to spend in 2026.

How Much Does a New Deck Cost in Maryland?

A new deck in Anne Arundel or Howard County typically costs between $18,000 and $55,000 depending on size, material, and features. A basic 12x16 pressure-treated deck starts around $18,000–$25,000. A mid-size composite deck runs $28,000–$40,000. A large custom composite deck with premium features can reach $50,000–$65,000+.

What Are the Main Cost Drivers for a Deck in Maryland?

Decking Material

  • Pressure-treated lumber: Most affordable option. Requires annual maintenance — cleaning, sealing, and staining every 1–2 years in Maryland's humid climate. Lifespan: 15–20 years with consistent care.
  • Cedar: Naturally rot-resistant and better looking than pressure-treated, but requires similar maintenance near the Chesapeake Bay. Costs roughly 20–30% more than pressure-treated.
  • Composite (Trex, TimberTech, Fiberon): The most popular choice for new decks in Maryland. No annual staining, no splintering, and warranties of 25–50 years depending on the product tier. Costs 40–70% more than pressure-treated upfront but saves significantly on maintenance over time.
  • PVC decking: Similar to composite but 100% synthetic. Extremely low maintenance and highly resistant to moisture. Premium pricing, typically 15–25% more than composite.

Deck Size and Shape

Larger decks cost more for obvious reasons, but shape matters too. A simple rectangular deck is the most efficient to build. L-shapes, multi-level decks, and curved or angled designs add labor and material cost. Multi-level decks also typically require additional structural posts and footings, which adds to the foundation cost.

Height Off the Ground

A ground-level deck attached to a walkout basement is structurally simpler than a second-story deck elevated 12 feet off the ground. Taller decks require larger footings, more substantial posts and beams, and more complex framing. Expect elevated decks to cost 20–35% more per square foot than comparable ground-level builds.

Railings

Railings are required by code for decks above a certain height, and they're a significant cost variable. Pressure-treated wood railings are the least expensive option. Cable railings — popular for unobstructed views, especially in waterfront communities in Anne Arundel County — cost considerably more but look excellent. Aluminum and composite railings fall in between.

Built-In Features

Built-in seating, planters, pergolas, outdoor kitchens, and integrated lighting all add cost but also add value. These features are typically easier and less expensive to build in during original construction than to add later.

What Are Deck Permit Costs in Anne Arundel and Howard Counties?

Both counties require building permits for new deck construction. Permit fees are based on the estimated construction value and typically run $200–$500 for a residential deck. The permit process includes plan review and inspections at key stages — footings, framing, and final. We handle all permitting as part of every deck project.

Anne Arundel County permits are handled through the Office of Inspections and Permits. Howard County permits go through the Department of Inspections, Licenses and Permits (DILP). Both departments require drawings showing deck dimensions, framing layout, footing locations, and attachment details.

Does a New Deck Add Value to a Maryland Home?

Yes — consistently. Decks are one of the highest-ROI home improvements in the Mid-Atlantic region. According to Remodeling Magazine's Cost vs. Value data, a wood deck in the Mid-Atlantic recoups roughly 60–75% of its cost at resale. Composite decks recoup slightly less upfront but are viewed more favorably by buyers who don't want the maintenance burden. In competitive markets like Annapolis, Severna Park, and Columbia, a well-built deck is a meaningful selling point.

How Do I Get an Accurate Deck Estimate?

Deck pricing depends on your specific site, material choices, and design. Use our free deck estimate calculator to get a ballpark range, or schedule a free consultation for a detailed quote. We build decks throughout Annapolis, Columbia, Severna Park, and across Anne Arundel and Howard Counties. See all our deck and porch services.

Frequently Asked Questions

What size deck can I build without a permit in Maryland?

In both Anne Arundel and Howard Counties, virtually all deck construction requires a permit regardless of size. There is no meaningful size exemption for attached decks. Freestanding structures may have different thresholds — check with the county before assuming a permit isn't needed.

How long does it take to build a deck in Maryland?

A standard 12x16 to 16x20 deck typically takes 1–2 weeks of construction once permits are in hand. Factor in 2–4 weeks for permit approval before construction can begin. The full timeline from signed contract to completed deck is typically 6–10 weeks.

Is composite decking worth the extra cost in Maryland?

For most Maryland homeowners, yes. Maryland's humid summers, wet springs, and freeze-thaw winters are hard on wood. The maintenance savings over a 10-year period — no annual staining, no sealing, no board replacement from rot — typically offset the higher upfront cost. For waterfront properties in Anne Arundel County especially, composite is almost always the right call.

What type of footings are required for a deck in Maryland?

Anne Arundel and Howard Counties require deck footings to extend below the frost line, which in Maryland is 30 inches. Footings must be poured concrete and sized to support the load above. Helical piers are an alternative in some situations. Your permit drawings will specify footing requirements.

Can I build a deck myself in Maryland?

Homeowners can pull permits and build their own decks in Maryland. However, the framing must meet code and pass inspection, and any electrical work (outlets, lighting circuits) requires a licensed electrician. If you're not experienced with structural framing and local code requirements, hiring a licensed contractor is strongly recommended.