How Much Does a Deck or Screened Porch Cost in Maryland and Northern Virginia? A 2026 Guide for DMV Homeowners
Summer is when most homeowners in Bethesda, Rockville, Potomac, and across Montgomery County and Fairfax County finally decide to build the outdoor space they’ve been imagining. However, the same question comes up almost every time: how much does this actually cost? And just as importantly, should it be a deck or a screened porch?
This guide answers both questions with real DMV numbers. Specifically, it covers what decks and screened porches cost in Maryland and Northern Virginia in 2026, what drives the price difference between the two, and how to think through which option fits your budget, your climate concerns, and your lifestyle.
At H&C Construction Design Build, we design and build custom decks and screened porches across Maryland, Washington DC, and Northern Virginia. Here’s what you need to know before planning your project.
Deck Costs in Maryland and Northern Virginia: 2026
A deck is fundamentally a platform with railings — sometimes paired with stairs, built-in lighting, or a pergola. Because it doesn’t require a roof, walls, or interior finish work, it remains the more affordable outdoor living option per square foot.
In 2026, deck costs in the Maryland and Virginia market typically range from $15,000 to $75,000 or more, with most homeowners investing between $25,000 and $45,000 for a quality composite deck with professional design and installation.
Here’s a breakdown by material tier.
Pressure-Treated Wood Decks: $30 – $50 per square foot
Pressure-treated lumber is the most affordable decking material. It performs well structurally, but it requires annual sealing and staining to maintain its appearance and protect against Maryland’s humid summers and freeze-thaw winters. For homeowners planning to sell within the next few years, pressure-treated decking can be a reasonable choice — particularly if the design itself is strong.
Mid-Tier Composite Decks: $55 – $80 per square foot
Composite decking — brands like Trex and TimberTech — has become the dominant choice for DMV homeowners planning to stay in their home for the long term. Because it requires no staining or sealing, composite decking holds up significantly better than wood across years of DMV humidity, without the recurring maintenance cost.
For a standard medium deck — roughly 14 feet by 20 feet, the most common size requested by homeowners in Montgomery County and Fairfax County — a mid-tier composite build typically lands between $28,000 and $35,000, including railings and one set of stairs.
Premium Composite or PVC Decks: $80 – $120 per square foot
At the premium end, capped composite and PVC materials — such as Trex Transcend or AZEK — deliver the longest lifespan, the cleanest appearance, and the strongest performance in DMV summers. In 2026, most Maryland and Virginia homeowners are choosing premium materials even when budget allows for mid-range options, because the long-term value math favors it: the price difference between mid-range and premium composite is often negligible over 20 years, while premium materials deliver meaningfully better warranties and performance.
What Drives Deck Costs Beyond Material
Labor accounts for 50% to 70% of total deck cost in Maryland. Custom features — diagonal board patterns, picture-frame borders, cable railings, and built-in seating — push labor costs toward the higher end of any material tier. A simple straight-board deck with standard railings sits toward the lower end.
Larger decks are also more cost-efficient on a per-square-foot basis, because fixed costs like permits, engineering, and site mobilization spread across a larger footprint. As a result, a modest increase in deck size often delivers a better overall value than building the smallest deck that technically meets your needs.
Screened Porch Costs in Maryland and Northern Virginia: 2026
A screened porch is a fundamentally different and more substantial structure than a deck. Because it functions closer to a home addition — with a roof system structurally tied into the home, framed walls and screens, electrical planning, and full finish carpentry — it carries meaningfully higher cost.
In 2026, custom screened porches in Montgomery County and Fairfax County start around $45,000 to $60,000 for a standard build with pressure-treated framing, mid-range finishes, and basic electrical. High-end builds — featuring premium composite decking, retractable screen systems, infrared heaters, or a fireplace — routinely reach $75,000 to $200,000 or more.
As a general rule, screened porches cost roughly 1.5 to 2 times more than a deck of comparable size. However, the value proposition is different. Decks shine on perfect-weather days and for grilling. Screened porches shine on humid afternoons, buggy evenings, and the spring and fall shoulder-season weeks when you want fresh air without full outdoor exposure.
Three-Season vs. Four-Season Screened Porches
A three-season screened porch uses standard or motorized aluminum screens and is comfortable from spring through fall — generally without a full HVAC system, though many homeowners add a ceiling fan and sometimes a ductless mini-split for additional comfort.
A four-season room incorporates insulated glass window systems, dedicated heating, and sometimes cooling, making the space comfortable year-round. This upgrade adds meaningfully to cost but transforms the space from a seasonal amenity into genuine, year-round livable square footage.
What Drives Screened Porch Costs
Roof tie-in complexity. The screened porch’s roof must be structurally integrated with the existing home’s roofline. This is one of the most significant cost variables — more so, in many cases, than the material grade chosen for the floor or screens.
Foundation type and site conditions. Sloped or clay-heavy lots, common throughout parts of Fairfax County and Montgomery County, require more substantial foundation work than a flat, stable site. A professional site assessment early in the process clarifies this before a budget is finalized.
Screening system. Standard fixed aluminum screens are the most affordable option. Motorized retractable screens, which allow homeowners to open the porch fully on a perfect evening and close it when bugs or weather move in, add cost but deliver significant flexibility.
Electrical and comfort features. In 2026, most buyers and homeowners expect a screened porch to include ceiling fans, adequate lighting, and several outlets as standard. Infrared heaters, built-in fireplaces, and audio or TV integration add further cost but extend the porch’s usability deeper into the shoulder seasons.
Deck vs. Screened Porch: Making the Right Choice for Your Budget
The right choice depends on how you plan to use the space, your budget, and how many months per year you want genuine outdoor comfort.
Choose a deck if: your priority is grilling, sun exposure, and a more affordable entry point into outdoor living, and you’re comfortable using the space primarily on clear, pleasant days.
Choose a screened porch if: Maryland’s humidity, pollen, and bug pressure are the main barriers keeping you from using your backyard, and you want a space that functions like a true outdoor room across more months of the year.
Consider both if your budget allows. Many DMV homeowners combine an open deck section for grilling and sun with an adjacent screened section for dining and relaxing — and building both together typically costs 30% to 40% less than constructing them as two separate projects at different times.
If you’re not ready for the full screened porch investment today, a practical strategy is to build your deck’s frame to porch-load specifications from the start. This makes a future screened porch conversion significantly less expensive than retrofitting a deck that wasn’t designed to carry the added structural load.
ROI: What Decks and Screened Porches Return at Resale
Decks recover 60% to 72% of their cost at resale according to the 2026 Cost vs. Value Report, with the Mid-Atlantic region tracking near the high end of that range. Screened porches typically return 50% to 75%, with the strongest returns coming from porches that are well-sized for the home and architecturally integrated rather than appearing as an obvious add-on.
Beyond resale value, both decks and screened porches deliver significant day-to-day quality of life value. Homeowners consistently report that a well-designed outdoor space becomes one of the most-used rooms in the house — especially from spring through fall in the DMV’s climate.
Permits for Decks and Screened Porches in Maryland and Virginia
Both decks and screened porches require building permits in Maryland and Virginia. In Fairfax County and Montgomery County specifically, a screened porch is treated as a residential addition rather than a simple deck — which means the permitting process, structural engineering, and foundation requirements carry real weight on both timeline and total cost.
Decks attached to the home also require permits, and many DMV jurisdictions additionally require tree affidavits and stormwater management documentation before a permit is issued. As fully Licensed Contractors in Maryland, we manage all permit applications and inspections as part of every project.
Timing Your Project for Summer Use
Spring and early summer are peak building seasons in Maryland and Virginia, which means the homeowners enjoying a finished deck or porch by midsummer are typically the ones who began planning months earlier. For a summer completion, starting the design and permitting process at least three to four months in advance is the realistic timeline.
Decks generally take four to eight weeks to build once permits are approved. Screened porches, because of their added structural and finish complexity, typically take four to eight weeks as well — though high-end custom builds with extensive electrical and finish work can run longer.
The H&C Construction Design-Build Process
Our process for decks and screened porches follows the same structured design-build approach we use across all our services.
Design consultation. We visit your property, assess site conditions, discuss your goals, and review material and structure options that fit your budget and how you want to use the space.
Design development. We create a detailed plan addressing layout, structural requirements, roofline integration for porches, and material selections.
Permitting. We handle all permit submissions and coordinate with the relevant county building department.
Construction. Our licensed crews build the structure from foundation to finish, managing scheduling and site coordination throughout.
Final walkthrough. We review the completed project with you before closing it out.
Browse completed deck and screened porch projects across Maryland, DC, and Virginia in our Our Remodeling Projects portfolio. If your outdoor living project connects to interior goals — a Kitchen Remodeling project that opens onto the new space, for example — we coordinate the full scope under one plan.
Getting an Accurate Estimate for Your Project
Every deck and screened porch project is different. Your lot’s slope, the existing condition of your home’s wall where the structure attaches, the layout you want, and the materials you choose all interact in ways no online range can fully capture.
The right first step is a professional consultation with a General Contractor in Maryland experienced in DMV outdoor living projects — one who can assess your specific site and give you an honest, detailed estimate.
Ready to Plan Your Deck or Screened Porch?
H&C Construction Design Build serves homeowners across Maryland, Washington DC, and Northern Virginia — including Rockville, Bethesda, Potomac, Silver Spring, Chevy Chase, Gaithersburg, Montgomery County, Arlington, Alexandria, and Fairfax. Whether you’re planning a simple deck, a custom screened porch, or a combination of both, our design-build team is ready to give you an honest assessment and a realistic plan.
Explore our Decks & Porches service and request a consultation to start planning today.