Whitmer Decks Screened Porches | Custom Decks & Porches
Screened porches in Northern Virginia

Screened Porch Builder in Northern Virginia

We've designed and built screened porches across Fairfax, Loudoun, Arlington, Prince William, and Alexandria since 2004 — it's the project we're known for, alongside the decks they usually connect to.
A 16-by-14 screened porch can cost $40,000 or $120,000. Understanding why is most of what the first conversation is about.

Who builds screened porches in Northern Virginia?

Whitmer Decks is a design-build company founded in 2004 by Cliff and Lisa Whitmer and based in Dulles. Custom decks and screened porches have been our core work from the start. We build across Fairfax, Loudoun, Arlington, Prince William, and Alexandria, and in the towns of Vienna and Herndon and the city of Leesburg. We're TimberTech Pro Platinum and TrexPro Gold contractors, members of NADRA, and Northern Virginia Magazine has named us a top builder seven years running.

Screened porch, three season room, or pavilion?

A screened porch is a roofed room with screen where the walls would be. You get the shade and the rain protection of a roof, the air of being outside, and none of the mosquitoes — which in Northern Virginia from May to October is the whole point.

It sits between two other things we build. A pavilion is the same roof without the screens — open on all sides. A three season room goes the other direction: the screen openings get vinyl or glass window panels, so the room holds heat in spring and fall and keeps the pollen out. Many of the porches we build are framed so that step can come later.

Why the same porch can cost $40,000 or $120,000

Same 16-by-14 footprint, same county, same crew. The difference is everything that isn't the footprint: a shed roof versus a gable or hip, a flat ceiling versus a vaulted one with exposed beams, screen panels versus a full screen-wall system, the flooring, the railing, a fireplace, lighting, fans, how high it sits off the ground, and whether the structure it's on can carry it.

That's why we don't publish price ranges. A designer who has seen the house can put your budget where it matters most to you. A calculator can't.

  • Screened porches on a new or existing deck
  • Screened porches at grade over a patio
  • Open covered porches without screens
  • Porches framed for later conversion to a three season room
  • Porch-and-deck combinations designed as one space

Quick Answer

Roof, open sides: Pavilion

Roof, screened sides: Screened porch

Roof, window panels, usable in April and November: Three season room

Typical time on site: Four to six weeks

What decides how a porch gets built

What it sits on. A screened porch is a roofed structure, and it weighs far more than a deck. An existing deck has to be evaluated before a porch goes on it — we find rot in the rim joist on roughly 30 to 50 percent of the older decks we open up, and most weren't framed for a roof in the first place. Sometimes the deck can be reinforced; often it makes more sense to rebuild it and the porch together.

The exterior finish. A porch has a lot of exterior wood — posts, beams, fascia, trim — and staining it once or twice over the years costs more than wrapping it in PVC once. We'll show you both and let you decide, but most of our clients choose the wrap.

The railing. Where the porch sits above grade, it needs one inside the screen. Composite railing can sag within a few years; we recommend aluminum.

The roof tie-in. Connecting a new roof to an existing one, and flashing it so water never finds its way in, is where most of the craftsmanship on a porch goes. It's also what makes the porch look like it was built with the house rather than added to it.

Often part of the porch

  • Vaulted or beamed ceilings
  • Ceiling fans, lighting, and heaters
  • Outdoor fireplaces
  • PVC-wrapped posts and trim
  • Aluminum railing
  • A deck stepping out from the porch

Design is most of the work

A porch is the most visible addition most homeowners ever make. Roof pitch, overhang, column proportions, and how it meets the house decide whether it looks like part of the home or an afterthought.

To Scale and Photorealistic

Our designs are drawn to scale and rendered photorealistically, so you see the porch against your house before anything is cut.

Live Changes

On many projects we adjust the design with you on a video call — vault the ceiling, change the roof form, add a fireplace — and you see it right away.

Porch and Deck Together

Most of our porches connect to a deck, and designing both at once is what makes the levels, materials, and traffic flow work as one space.

Year-Round Building

We build through the winter. Homeowners often assume outdoor construction stops in December; ours doesn't.

How we work

We've been a small company by choice since Cliff and Lisa Whitmer started it in 2004. The core crew is full-time carpenters who work for us, plus a small circle of specialists — electricians and a few framing and finish crews — we've handpicked and worked with for years.

1. Design Consultation

A designer walks the property, looks at the roofline and what the porch will sit on, and talks through how you want to use the room.

2. Design

To-scale, photorealistic drawings — adjusted with you until the roof form, ceiling, and proportions are right, and designed to the budget you have.

3. Permits

Screened porches need a permit. We file in Fairfax, Loudoun, Arlington, Prince William, Alexandria, Vienna, Herndon, and Leesburg. Fairfax is fastest; Prince William and Alexandria are the slowest, and Arlington and Vienna are strict about lot coverage. Where there's an HOA, we prepare the package for you to submit.

4. Build

A screened porch typically takes four to six weeks on site. Crews arrive between 7:30 and 8:00 and work until 4:00 or 5:00, year-round. Start dates depend on the season and the county's backlog, so we give you a real schedule at consultation. One year on workmanship.

Where we build

Fairfax County, Loudoun County, Arlington County, Prince William County, and the City of Alexandria, including Vienna, Herndon, Leesburg, Burke, McLean, Falls Church, Manassas, and Ashburn.

If the porch connects to a new or existing deck, we'll design both at the first consultation.

Our Outdoor Living Services

Whitmer Decks offers custom outdoor living solutions for Northern Virginia homeowners.

Decks

Custom deck design and construction for beautiful, functional outdoor living.

Screened Porches

Comfortable porch spaces designed to extend your home outdoors.

Pavilions

Covered outdoor structures that add shade, style, and usability.

Pergolas

Custom pergola installations for defined outdoor seating and dining spaces.

Patios

Expertly crafted patios that complement decks and outdoor living areas.

Outdoor Kitchens

Outdoor cooking and entertaining spaces designed around your home.

Three Season Rooms

Custom enclosures that make your outdoor space more comfortable for more of the year.

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