Service Areas

Design & Build Services In Herndon, VA, From
The Local Team Of Experts

Let Milcon Handle The Work So
You Can Relax

Do you have a never-ending to-do list for your Herndon, VA, home? You can complete small things on your own, like cleaning gutters, cleaning the HVAC, and replacing your screens. But for more significant tasks, like roof replacement or upgrading your doors and windows, you need a design and build company that’s reliable and trustworthy.

At Milcon, our local team of experts is here to help. We offer a full range of design and build services that will transform your home into something you can be proud of. Our skilled professionals have years of experience in the construction industry, so they understand what it takes to create a quality product that lasts many years.

Don’t leave those larger projects up to chance – hire the Fairfax County professionals who know how to do the job. Milcon is the design and build company you can rely on for quality service and beautiful work so you can sit back, relax, and enjoy your beautifully updated home.

Our Design & Build Services

Our design and build services were designed to make the process as simple for you as possible. We handle it all and do it with precision.

Asphalt Roofing

We install asphalt roofing for your Herndon, VA, home with expertise. Our teams only use the premium line of GAF Lifetime Roofing systems with the Golden Pledge standard. These products come with fantastic guarantees and will have no problem standing up against the harsh Virginia weather.

If you’ve already started searching for a roofing company in your area, you know there is no shortage of providers.

But most clients choose to work with us because of our efficiency and prices. We can install a top-notch GAF roof for up to 30% lower price than the competitors. The entire system will ensure your roof replacement is beautiful and strong enough to last decades.

Vinyl Siding

CertainTeed is the brand of siding we install on homes in the Herndon, VA, area. CertainTeed offers numerous styles, including classic looks, shiplap, board, batten, beaded, and more. Plus, with the multiple color options, we can give your home an entirely new look!

Window Replacement

Our window replacement services only use RJT Industries windows. These windows are designed in Virginia, so you can rest assured they provide top performance in all four seasons.

The windows are designed to handle the frigid lows in the winter and the hot and humid summer temperatures, effortlessly going from one extreme to another.

Door Replacement

Whether you need a fiberglass or steel entry door installed, or if you want to update your patio doors, our door replacement services are here to make your home look amazing. We utilize ProVia fiberglass and steel entry doors for all replacements.

These doors are not only gorgeous, but they are built to last. Our patio doors are made by RJT Industries and manufactured for our weather.


For some of our competitors, the trim around your new windows and doors is an afterthought. But not for us – we pay attention to every detail. We painstakingly install and upgrade your trim to maximize efficiency, to build a cohesive look, and to increase your curb appeal.


We install five and six-inch aluminum gutters that direct water away from your roof and to the ground where it needs to go. Often, our gutter services work hand in hand with a roof replacement.

FAQs About Design & Build Services

Do you offer free estimates (at the expense of a stressful experience)?


Well… yes to the first part of the question.

We can’t emphasize this enough – under no circumstances will you ever feel pressured during the sales process. In fact… we don’t even like to call it a ‘sales process’.

Rather, we consider it an information session with owner Matt Kavanah. You'll get only the necessary information during his 30-minute no-stress, no-hassle consultation.

And the best part?

You'll recieve an emailed quote AFTER the meeting.

So you can decide without the manipulative pressure other contractors need to close the deal.

Do you only offer vinyl siding?

No! We’re also proud to offer James Hardie Siding.

Does Milcon Design & Build offer financing?


At Milcon Design & Build, we understand investing in your home's exterior can be a significant undertaking. That's why we offer flexible financing options to our customers in the DMV area.

We're committed to making our top-quality siding, windows, and entry door services more accessible and affordable for you.

How long does it take to install James Hardie siding?

The timeframe for siding installation depends on several factors, including the size of your Northern VA or Maryland home and the type of James Hardie siding you've chosen.

While the actual installation timeframe can vary, you can expect the process to be efficient and managed by experienced professionals.

Custom orders or specialty siding types may extend the timeline due to manufacturing lead times, though we at Milcon always do our best to stay prudent and on time no matter the project's uniqueness.

What is your process of window replacement like?

Our window replacement process starts with an easy consultation, where we assess your needs and offer you an initial quote. Our professionals then take precise measurements to ensure a snug fit.

Once the windows are ready, we schedule an installation date. On the day, our skilled team carefully removes the old windows, installs the new ones, and performs a thorough clean-up afterward.

One thing you can be sure of is a professional, respectful, and friendly installation.

Get A FREE, 30-Minute Quote (Yep. Just 30 Minutes!)

Ready to “cut the fluff” and get a no-nonsense Northern Virginia exterior remodel starting with a stress-free, 30-minute, no-obligation quote from the owner himself?
Then call us at 703-581-2761 or fill out our hassle-free form to schedule your free quote today!


Wait! You haven’t requested your FREE 30-minute quote yet!*

No pressure. No hassle. No obligation.

*On any roof replacement project. All final quotes sent through email correspondence.

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