Three Seasons Porches in Leesburg, VA

Comfortably host the ones you love throughout the year!

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Marchisio 16 Annandale
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Why a three seasons porch in Leesburg?

  • To Expand Living Space to Outdoors

    A three seasons porch allows you to enjoy the outdoors without being pestered by bugs.

  • To Gather with Friends and Family

    A three seasons porch provides a comfortable place to hang out with those you love.

  • To Increase the Value of Your Home

    A three seasons porch increases the resale value of your home.

We proudly offer and install Porch Conversions 4-track windows and doors that transform any outdoor space into a 3-season room!

With custom feature, plenty of ventilation options, and durable flex vinyl glazing - you can enjoy your outdoor space for more of the year in full comfort and 100% peace of mind! Watch the product walkthrough video or view our features PDF to learn more.

3-Season Room Features PDF
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Three-seasons Porches we build in Leesburg

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Composite Three Seasons Porches

Enjoy a long-term maintenance-free three seasons porch that matches your home and style.

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Wooden Three Seasons Porches

Pressure-treated lumber three seasons porches provide style in a more cost-effective way.

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Custom Fireplaces

Sit around a campfire without the bugs and without giving your whole house the campfire smell.

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Custom Air Control

Give your three seasons porch the air control it needs to keep from getting stuffy on hot summer nights.

“Miguel and his team recently completed a screened porch for our family, and it turned out even better than we imagined. Miguel is clearly an expert in his field. The entire team was professional, reasonably priced, and a pleasure to work with from start to finish. We hope to redo our patio in the future and we look forward to working with Fortress again.”

-Gillian

“We had a great experience with Fortress this summer. Miguel responded immediately to our inquiry and a thorough estimate with options was quickly prepared. Wilder and his crew started soon after because of an unexpected opening. Everyone was very professional and friendly. We are very pleased with our composite deck.”

-Cindy

“We had a very good experience working with Miguel from Fortress Construction. From start to finish, he, the builder, and contractors were incredibly professional, patient, and thorough. He’s clearly very customer-focused and trustworthy. His attention to detail really stood out, especially in the planning phase. The build quality is excellent, and the finished product exceeded our expectations. I highly recommend Fortress.”

-Greg

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View Some Of Our Projects In Leesburg & Surrounding Areas

Marchisio 10 Annandale

Custom Three-Season and Deck in Annandale, Va

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Custom 3-Season Porch ins Falls Church, VA

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Custom Screened-in Porch and Deck in Falls Church, VA

We make a new three seasons porch stress free in Leesburg!

  • 1

    Call Us

    Our free no-obligation estimate helps us understand your vision for your outdoors.

  • 2

    Proposal

    You receive an itemized proposal with a free 3D rendering.

  • 3

    Development

    We begin developing your project after receiving the down payment.

  • 4

    Completion

    You enjoy your new hosting and living area!

What you can expect with Fortress Construction:

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Family-Owned Business

We treat you the way every customer deserves to be treated.

20+ Years of Experience

Have peace of mind that you are getting the best construction techniques on your project.

2-year Labor Warranty

We stand behind our work for 2 years.

Locally Sourced Products

No big-box stores for us: we source local high-quality materials.

Custom Three Seasons
Porches in Leesburg, Virginia

Fortress Construction is proud to build Three Seasons Porches for homeowners in Leesburg, VA, elevating outdoor living with style and everyday practicality. Our custom-built porches let you soak in the beauty of your backyard while staying comfortable as the weather shifts. Whether you want a quiet retreat or a welcoming space to host friends, we craft each porch with premium materials and careful attention to detail. Our experienced team collaborates with you to design a porch that fits your home seamlessly—delivering lasting value, curb appeal, and enjoyment for years to come.

Learn more about Leesburg...

Questions About a Three-Season Porch? Get Your Answers Here!

What is meant by a "three season porch/room"?
Is there special permitting required to build a 3-season room or porch in Leesburg?
How do you keep it ventilated in the summer?
How is it kept warm in the winter?
What is Fortress Construction's process to build a 3-season porch for my Leesburg home?