Average Cost of a Deck in Maryland (2026): Real Prices from a…

The average cost of a new deck in Maryland in 2026 is $18,000 to $45,000, with most homeowners in Anne Arundel and Howard Counties spending around $28,000 for a 12×20 composite deck with quality railings and one set of stairs. Pressure-treated builds start around $30–$50 per square foot; mid-tier composite runs $55–$80/sq ft; premium composite or PVC with cable or aluminum railings runs $80–$120/sq ft. Re-decking an existing structurally sound frame is far cheaper — typically $30–$45/sq ft for the surface and railings only.

"Deck" covers a wide spectrum. A basic ground-level pressure-treated deck off a walkout basement is a very different project from a 14-foot elevated composite deck with cable railings and built-in benches. The price difference between them can be $40,000 in the same house. Below is a straight breakdown of what drives the cost, what you can expect to pay at different sizes and material tiers, and where the money actually goes. These are real bid numbers from 2026 projects in Anne Arundel and Howard Counties — not marketplace estimates padded with referral fees.

How Much Does a Deck Cost in Maryland by Project Type?

Project type	Typical cost (Anne Arundel + Howard)	What's included
Re-deck (existing frame stays, new surface + railings)	$10,000 – $22,000	Strip and dispose of old decking and railings, replace with new boards and railings on existing joists. Frame must pass code inspection.
Basic new build, pressure-treated, ground-level	$15,000 – $25,000	New footings, framing, PT decking, PT railing, one set of stairs. 200–250 sq ft.
Standard new build, composite, ground-level	$22,000 – $38,000	New footings, PT framing, composite decking, composite railing, one set of stairs. 200–300 sq ft.
Mid-tier composite, elevated or larger	$32,000 – $55,000	Elevated (4–10 ft), 300–400 sq ft, composite with aluminum balusters, two stair runs or wider single run, basic lighting.
Premium composite or PVC with cable railings	$45,000 – $75,000	350–500 sq ft, PVC or premium composite, cable or aluminum railing, multi-zone lighting, built-in features.
Multi-level / luxury custom build	$65,000 – $120,000+	500–800 sq ft across multiple levels, premium materials, full lighting package, outdoor kitchen integration.

You'll see higher numbers from design-build firms in Bethesda and the DC suburbs — Design Builders quotes $80–$120/sq ft for pressure-treated and $120–$180/sq ft for composite, which translates to $25,000–$45,000 for a medium 14×20 deck. That's not because the materials are different. It's overhead: showrooms, designers, project managers, marketing. As an owner-operator MHIC-licensed contractor, I run 15–25% lower on the same scope of work in Anne Arundel and Howard Counties, with the trade-off being a smaller schedule of available start dates. If your quotes span a $20,000 range for what sounds like the same deck, the difference is almost always overhead and material tier — not quality.

Average Cost of a Deck by Size

Size is the biggest single cost driver, but it's not linear — a 400 sq ft deck doesn't cost twice as much as a 200 sq ft deck because permits, mobilization, and the ledger/flashing detail are shared fixed costs. Here are typical Anne Arundel and Howard County prices for a new build with one set of stairs.

Deck size	Square footage	Pressure-treated	Mid-tier composite	Premium (PVC, cable rail)
8×10	80 sq ft	$7,500 – $11,000	$10,500 – $14,500	$13,000 – $18,000
10×12	120 sq ft	$9,500 – $14,000	$13,500 – $18,500	$16,500 – $23,000
12×16	192 sq ft	$14,000 – $20,000	$20,000 – $28,000	$25,000 – $35,000
12×20	240 sq ft	$17,000 – $24,000	$24,000 – $34,000	$30,000 – $42,000
14×20	280 sq ft	$19,500 – $28,000	$28,000 – $38,000	$34,000 – $48,000
16×20	320 sq ft	$22,000 – $32,000	$32,000 – $44,000	$40,000 – $55,000
20×20	400 sq ft	$27,000 – $38,000	$38,000 – $54,000	$48,000 – $68,000
20×24	480 sq ft	$31,000 – $44,000	$45,000 – $62,000	$56,000 – $80,000

The sweet spot for most Maryland homes is 12×20 to 14×20 — large enough for a dining table or seating group plus a grill zone, small enough to keep framing and stair geometry simple.

Cost per Square Foot for a Deck in Maryland

Deck builds in Maryland run $30 to $120 per square foot depending on material, height, and railing system. Most projects in Anne Arundel and Howard Counties land in the $55–$80/sq ft range for a mid-tier composite build.

Build tier	Cost per sq ft
Re-deck on existing frame (PT surface)	$30 – $45
Re-deck on existing frame (composite surface)	$45 – $70
Basic new build (PT, ground-level, basic railing)	$30 – $50
Standard composite (mid-grade, basic aluminum balusters)	$55 – $80
Mid-tier composite (premium board, aluminum railing)	$70 – $100
Premium PVC or hardwood with cable / aluminum railings	$85 – $120
Multi-level or elevated (10+ ft) with premium finishes	$100 – $160+

Smaller decks (under 150 sq ft) typically cost more per square foot because fixed costs — permits, mobilization, the ledger flashing detail, footing inspections — don't scale down proportionally.

Cost of a Deck by Material

Material	Installed cost per sq ft	Lifespan in MD	Maintenance	Best for
Pressure-treated pine (PT)	$12 – $22	15–25 yrs	Annual cleaning + stain/seal every 2–3 yrs	Budget builds, framing
Cedar	$18 – $30	15–20 yrs	Annual cleaning + sealing	Aesthetics on a moderate budget
Standard composite (Trex Enhance, TimberTech Pro, Fiberon)	$25 – $42	25–30 yrs	Periodic cleaning only	Most Maryland new builds
Premium composite (Trex Transcend, TimberTech AZEK)	$35 – $58	30–50 yrs	Periodic cleaning only	Premium look, lifetime ownership
PVC (Azek, TimberTech AZEK Vintage)	$40 – $65	30–50 yrs	Periodic cleaning only	Pool decks, moisture-prone sites
Tropical hardwood (ipe, cumaru, mahogany)	$40 – $70	25–40 yrs	Annual oiling for color retention	High-end aesthetic, natural look
Aluminum decking	$50 – $90	40+ yrs	Almost none	Rooftop and elevated decks

For most Anne Arundel and Howard County homes, mid-tier composite is the right call. Maryland's humidity, freeze-thaw cycle, and Chesapeake Bay salt air are hard on wood — a PT deck that looks great year one will need staining year three and board replacement by year fifteen. Composite typically costs 50–80% more upfront but eliminates 25 years of maintenance costs. For a 300 sq ft deck, the lifetime cost of ownership over 20 years is usually within $2,000–$5,000 between composite and PT once you factor in maintenance — and composite still looks new at year 20.

If you want more detail on the trade-off, see my composite vs wood decks for Maryland breakdown.

What Does Each Part of a Deck Cost?

Here's how a typical deck breaks down by line item. Prices are for a standard 240 sq ft (12×20) deck at 3–4 feet off the ground with one stair run.

Foundation and framing

Item	Cost
Footings (poured concrete, 30" frost depth, per footing)	$250 – $500
Footings, helical pier system (per pier)	$400 – $750
PT framing lumber (joists, beams, rim, ledger)	$1,800 – $3,500
Hurricane ties and tension ties (IRC R507 hardware)	$200 – $500
Ledger board flashing and proper attachment	$400 – $900
Joist tape (membrane over joist tops to prevent rot)	$150 – $300

The ledger-to-house attachment is the single most important structural detail on the entire deck. A ledger that's not properly flashed will leak water behind your siding for years before you see the damage. Hurricane ties and tension ties are required by Maryland's adopted IRC code (R507) — they're not optional, and they're not what gets cut on a low-bid quote. See my post-to-beam connection guide for the specific hardware I use and why.

Decking surface

Item	Cost per sq ft (240 sq ft deck)
PT 5/4×6 decking, screwed	$12 – $18
Composite, top-down screw	$25 – $35
Composite or PVC with hidden fasteners (clip system)	$30 – $45
Diagonal or chevron pattern (any material)	+$3 – $8/sq ft over straight layout
Picture-frame border	+$300 – $700 total
Inlay or pattern feature	+$500 – $1,500 total

Hidden fasteners are worth the upcharge on composite — top-down screw on composite shows the screw heads, which looks fine in a brochure photo but reads cheap up close. The clip systems (Camo, Trex Hideaway, TimberTech Concealoc) are what every premium build uses.

Railings

Railing type	Cost per linear foot installed
Pressure-treated wood rail with wood balusters	$30 – $55
PT wood rail with aluminum balusters	$50 – $80
Composite top/bottom rail with aluminum balusters	$70 – $110
All-aluminum railing system (Westbury, Fortress, Trex Signature)	$90 – $140
Glass panel railing	$140 – $250
Cable railing (stainless steel cables, wood or aluminum posts)	$130 – $220

For a typical 240 sq ft deck with railings on three sides (~48 linear feet), that's $1,500 in PT rail at the low end to $11,000 in cable rail at the high end. The most common choice in Anne Arundel and Howard County is composite top/bottom rail with aluminum balusters at $75–$95/lf — durable, low-maintenance, and looks clean without the cost of cable.

Stairs

Item	Cost
Standard single stair run (3–4 risers)	$1,200 – $2,500
Single stair run (5–8 risers, 4–6 ft drop)	$2,200 – $4,500
Stair run (9+ risers, elevated decks)	$4,000 – $7,500
Stair landing platform	$800 – $2,500
Stair lighting (riser lights, per riser)	$80 – $150

Stairs are the place where corner-cutting shows up first. Risers must be uniform within 3/8" per code, and the stair stringer attachment to the deck frame must use proper hardware (not toenailed). A bad stair fails inspection — and worse, it fails the homeowner.

Lighting and electrical

Item	Installed cost
Low-voltage transformer + 4–6 post cap lights	$400 – $900
Low-voltage stair riser lights (per riser)	$80 – $150
Under-rail accent lighting (per linear foot)	$25 – $50
120V outlet with GFCI (deck-mounted)	$250 – $450
Dedicated 20A circuit from panel	$400 – $900
Outdoor smart lighting controller (Lutron, etc.)	$300 – $700

For most homeowners a basic lighting package (transformer, post caps, a few stair lights) runs $800–$1,500. Premium full-deck lighting with riser lights, under-rail accents, and smart control runs $3,500–$6,000.

Add-ons and built-ins

Add-on	Installed cost
Built-in bench (per linear foot)	$200 – $400
Built-in planter box	$400 – $1,200 each
Pergola attached to deck (PT)	$3,500 – $7,500
Pergola attached to deck (cedar or composite-wrapped)	$6,000 – $14,000
Outdoor kitchen rough-in (gas + electric stubbed)	$1,500 – $4,000
Hot tub pad framing (reinforced for ~5,000 lb load)	$1,200 – $3,500
Privacy screen / lattice wall	$400 – $1,200 per panel
Deck skirting (lattice or board)	$20 – $45 per linear foot
Gas line for grill (from house gas meter)	$800 – $2,200
Fire pit area framing (non-combustible base)	$600 – $2,000
Conversion to screened porch later (add roof + screens)	$20,000 – $45,000+

If you're considering a screened porch eventually, build the deck frame to porch-load specifications from day one — it's significantly cheaper than retrofitting later. See my Maryland screened porch cost guide for the conversion math.

What Percent of a Deck Is Labor?

Labor accounts for 50–70% of total cost on most Maryland deck builds. On a $28,000 composite deck, that's $14,000–$19,500 in labor and the rest in materials, permits, and overhead. Custom features — diagonal patterns, picture-frame borders, cable railings, built-ins — push labor toward the high end. A simple straight-board PT deck pushes it toward the low end.

Skilled framing labor in Maryland runs $55–$75 per hour for an experienced lead carpenter; helpers $35–$55. A two-person crew on a typical 12×20 build will spend roughly 60–90 labor hours from footing pour through final railing detail.

Permits, Inspections, and Engineering in Maryland

All decks attached to a house in Anne Arundel and Howard Counties require a building permit. There is no meaningful size exemption for attached decks — even a small 8×10 platform requires one.

Anne Arundel County permit fees for a residential deck run $150–$500 for the building permit, plus $50–$150 for an electrical sub-permit if lighting is being added. Plan review is included. See my Anne Arundel County remodeling permits guide for the full process.

Howard County permit fees run $200–$600 for the building permit and electrical sub-permits at $60–$150. Howard requires stamped engineering drawings for some larger or elevated decks. See my Howard County remodeling permits guide.

When engineering is required (large footprint, unusual ledger condition, or roof load from a future porch upgrade), stamped drawings cost $800–$2,500 from a Maryland-licensed structural engineer.

The contractor you hire should be MHIC-licensed. PRG Home Improvement LLC is MHIC #113057. Verify any contractor's license at the MHIC license database before signing — see how to hire a licensed contractor in Maryland for the vetting checklist.

Hidden Costs and Common Surprises on Deck Projects

This is the section the aggregators and design-build firms don't write because they're not the ones discovering it on demo day. After framing and rebuilding decks across Anne Arundel and Howard Counties, here's what regularly shows up:

Surprise	Typical added cost
Rotted ledger board behind house siding (almost always missing proper flashing)	$1,500 – $4,500
Existing ledger never properly attached — through-bolts missing or undersized	$800 – $2,500
Rim joist rot at house attachment	$1,200 – $3,500
Existing footings shallower than 30" frost depth (re-pour required)	$400 – $900 per footing
Existing footings undersized for new load	$300 – $700 per footing
Concrete-encased posts that have rotted at grade (very common on 1990s decks)	$500 – $1,500 per post to remove and re-set
Tree root conflict at proposed footing location	$400 – $1,500 to relocate or hand-dig
Septic field setback (rural Anne Arundel and Howard properties)	$0 – $5,000+ depending on options
HOA architectural review (common in Crofton, Severna Park, Two Rivers, Stillview Acres, Sabrina Park)	$0 – $500 + 2–8 week delay
Site grading or drainage issue requiring solution	$800 – $3,500
Power line clearance issue requiring relocation	$1,500 – $5,000+ (utility coordination)
Knob-and-tube wiring discovered when running new circuit (older Annapolis/Edgewater homes)	$1,500 – $4,000
Existing siding damage when removing old ledger	$600 – $2,500

A good contractor builds a 10–15% contingency into your budget for exactly these surprises. If your estimate is $25,000, plan for $28,000 available. Every contract I write defines the change-order process up front — if something shows up that wasn't visible at the estimate, you see the cost, you approve it, and the work moves forward.

Re-Deck vs. New Build: When You Can Save Significantly

If your existing deck frame is structurally sound — proper ledger attachment, proper footings at 30" depth, hardware in place, no rot in joists or rim — you can re-deck rather than rebuild. This means stripping the old surface and railings, replacing them with new boards and a new railing system, and keeping the frame.

Typical re-deck pricing in Anne Arundel and Howard County:

Re-deck scope	Cost per sq ft	Example: 240 sq ft deck
PT surface and PT railings	$30 – $42	$7,200 – $10,000
Composite surface and composite railing	$50 – $70	$12,000 – $17,000
Composite surface with aluminum baluster railing	$60 – $80	$14,500 – $19,500
Composite with cable railing	$75 – $100	$18,000 – $24,000

I recently bid a 390 sq ft chevron-pattern PT re-deck with IRC R507 hardware retrofit, new railings, and new stairs at around $13,500–$14,500 — keeping the existing frame and bringing it to current code. That's a fraction of what a full rebuild of the same deck would cost ($25,000–$35,000).

The catch: not every frame is salvageable. A frame that's already rotted, has shallow footings, or was built before the hurricane-tie code update typically can't be re-decked without code-compliance work that costs nearly as much as a rebuild. I do a free inspection of existing framing during the consultation and tell you straight whether re-decking makes sense or whether you're better off starting over.

How Long Does It Take to Build a Deck in Maryland?

From the first conversation to a finished deck, plan for 6 to 12 weeks total in Anne Arundel and Howard Counties.

Phase	Typical duration
Initial consultation and estimate	1–2 weeks
Design refinement and material selections	1–2 weeks
Permit application and review	2–6 weeks (Anne Arundel 2–4, Howard 3–6)
HOA architectural review (if required)	2–8 weeks (parallel with permits)
Material lead times (composite, cable rail, premium materials)	1–4 weeks (parallel)
Footings and frame inspection	3–5 days
Framing and decking	4–8 days
Railings, stairs, finish details	3–6 days
Final inspection	1–2 days

Active construction time is typically 2 to 3 weeks for a standard build. Material lead times for cable railings, premium composite, or specialty hardwood can extend the overall timeline.

Does a Deck Add Value in Maryland?

Yes. According to the 2026 Cost vs. Value Report from Remodeling Magazine and Zonda, deck additions recover 60–72% of their cost at resale nationally, with the mid-Atlantic region tracking near the top of that range. Wood decks recover slightly more on a percentage basis upfront (lower investment), while composite decks recover slightly less percentage but are viewed more favorably by buyers because of the zero-maintenance pitch.

Project cost	Typical resale value added in MD	Effective ROI
$18,000 PT deck	$12,000 – $14,500	67–80%
$30,000 composite deck	$20,000 – $23,500	67–78%
$50,000 premium build	$30,000 – $36,500	60–73%
$80,000 multi-level luxury	$42,000 – $52,000	53–65%

Higher-end builds recover a lower percentage because luxury features above neighborhood comp expectations are the part buyers won't fully pay for. That said, a well-built deck almost always outperforms most interior renovations on ROI percentage. In strong Maryland submarkets like Severna Park, Crofton, Annapolis, Davidsonville, and Clarksville, return tends to hit the top of the range.

How to Save Money on a Deck in Maryland

Re-deck if your frame is sound. $13,000–$18,000 for a composite re-deck versus $28,000+ for a full rebuild of the same footprint.
Pick a simple rectangle. L-shapes, multi-levels, and curves add 15–35% in labor without proportional usable space.
Build at grade if possible. Elevated decks (4+ ft off the ground) need bigger footings, longer posts, and code-required railing systems. A ground-level deck off a walkout basement is the cheapest scope.
PT framing + composite surface is the sweet spot. Composite framing is a waste of money — framing isn't exposed to UV or rain in a way that matters once the surface is on.
Choose composite railing with aluminum balusters, not cable. Looks 90% as clean for 50% of the price.
Run electrical during the build, not after. Adding outlets and lighting after the deck is built means tearing out fascia and crawling under. Plan it in.
Hire an owner-operator licensed contractor. Design-build firms with showrooms add 15–25% overhead. For a 200–300 sq ft deck in Anne Arundel or Howard County, that's a real number.
Don't cut on the ledger or the footings. This is where every cheap deck eventually fails. Ledger flashing and proper footings cost a few hundred dollars more and save you a structural rebuild ten years out.

How to Finance a Deck in Maryland

Most Maryland homeowners pay for a deck through one of three routes:

Home equity line of credit (HELOC). Usually the cheapest financing for projects in this range. Interest is variable but typically lower than personal loans, and interest may be tax-deductible if used for home improvement (consult your tax preparer).
Cash-out refinance. Worth considering only if current mortgage rates are at or below your existing rate.
Home improvement loan (unsecured personal loan). Faster to close than a HELOC, fixed rate, but higher interest. Reasonable option if you don't have home equity yet.

PRG doesn't offer in-house financing, but most clients pay by check or ACH on a milestone schedule: deposit, mid-project, and final upon completion. I can provide detailed estimates suitable for loan applications.

Frequently Asked Questions

What is the average cost of a deck in Maryland in 2026?

The average cost is $18,000 to $45,000 for a new build in Anne Arundel and Howard Counties, with most homeowners spending around $28,000 for a 12×20 composite deck. Pricing runs $30–$120 per square foot depending on material, height, and railing system.

How much does a 12×20 deck cost in Maryland?

A 12×20 deck (240 sq ft) typically costs $17,000–$24,000 in pressure-treated, $24,000–$34,000 in mid-tier composite, and $30,000–$42,000 with PVC or cable railings. Stairs and lighting are typically included in these ranges; significant elevation or built-ins are not.

How much does it cost per square foot to build a deck in Maryland?

Maryland deck builds run $30 to $120 per square foot. Pressure-treated is $30–$50/sq ft, mid-tier composite is $55–$80/sq ft, and premium composite or PVC with cable railings runs $85–$120/sq ft. Re-decks on an existing frame run $30–$70/sq ft depending on material.

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

In Anne Arundel and Howard Counties, virtually all attached deck construction requires a permit regardless of size. There is no meaningful size exemption for attached decks. Small freestanding ground-level platforms 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?

Plan for 6 to 12 weeks total from first conversation to finished deck — including permits, HOA review (if required), material lead times, and construction. Active construction time is typically 2 to 3 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. Lifetime cost of ownership (purchase + 20 years of maintenance) is usually within $2,000–$5,000 between composite and PT — and composite still looks new at year 20. PT typically needs board replacement by year 15.

What's the cheapest way to build a deck in Maryland?

Re-decking an existing structurally sound frame is the cheapest path — typically $30–$45/sq ft for a PT surface. For new builds, a simple rectangular ground-level PT deck with basic railings is the lowest-cost scope at $30–$50/sq ft.

What kind of footings do decks need in Maryland?

Anne Arundel and Howard Counties require deck footings to extend below the 30-inch frost line. Footings must be poured concrete (typically 10–12" diameter) and sized to support the load above. Helical piers are an alternative in some sites — they install faster and don't require concrete cure time. Your permit drawings will specify required footing details.

Can I build a deck myself in Maryland?

Yes, homeowners can pull permits and build their own decks. The framing must meet IRC R507 code and pass inspection at footings, framing, and final. Any electrical work requires a licensed electrician and a sub-permit. If you're not experienced with structural framing, ledger flashing, and current code requirements, hiring a licensed contractor is strongly recommended — the cost of a structural failure or a denied final inspection is significantly higher than the cost of a professional build.

Does a deck add value to a Maryland home?

Yes. Decks recover 60–72% of cost at resale per the 2026 Cost vs. Value Report, with the mid-Atlantic region tracking near the high end. In strong Maryland submarkets like Severna Park, Crofton, Annapolis, Davidsonville, and Clarksville, return tends to hit the top of the range.

Get a Personalized Deck Estimate

Every deck is different. The cost depends on your specific lot, the existing house attachment condition, the layout you want, and the materials. The only way to know what a deck costs for your home is to have someone look at it.

For a rough range based on your selections, use my free estimate calculator.
For a detailed line-item quote, schedule a free in-home consultation. I come out personally, walk the site, check existing structures, and write the estimate myself.

I build decks across Anne Arundel and Howard Counties — see my decks and porches service page for portfolio and details. Service areas include Gambrills, Crofton, Odenton, Severna Park, Annapolis, Davidsonville, Millersville, Ellicott City, Columbia, Clarksville, and surrounding areas.

Average Cost of a Deck in Maryland (2026): Real Prices from a Licensed Contractor