How Much Do Replacement Windows Cost in Northern Virginia?
Most replacement windows in Northern Virginia run $600 to $1,200 per window installed with us, and whole-house projects typically land between $8,000 and $25,000. Around the DC metro you will also meet premium quotes of $1,250 to $3,500 or more per window, which is why two homeowners on the same street can come away with wildly different ideas of what windows cost. This guide breaks down what sits inside those numbers, the one installation decision that matters more than brand, and how to compare quotes that refuse to line up.
Window replacement cost at a glance
| Project size | Typical investment |
|---|---|
| 5–8 windows (partial refresh) | $3,000 – $9,500 |
| 10–15 windows (most single-family homes) | $8,000 – $18,000 |
| 20+ windows (larger homes) | $12,000 – $25,000 |
These are planning ranges from the projects we install, based on quality vinyl replacement windows. Fiberglass, wood-clad, and specialty shapes price above them. A free at-home estimate turns the range into a firm written number for your actual openings.
What moves the number
How many windows, and which ones
Count is the obvious driver, but the mix matters too. Standard double-hung windows are the most affordable to replace. Bays, bows, casements, sliders, and custom shapes cost more, and one bay window can price like three double-hungs. If the budget is tight, replacing the worst windows first is a legitimate strategy, and we would rather you do half the house properly than all of it stretched thin.
Frame material
Quality vinyl is the value leader and what most of our ranges assume. Fiberglass costs more and brings stiffness and a paintable surface; wood-clad costs more still and belongs on houses where the interior look justifies it. We install windows from Andersen, Marvin, Pella, ProVia, Sunrise, Vanguard, JELD-WEN, Vytex, Simonton, and Alside, so our recommendation follows your house and budget, not the one brand on the truck.
Insert or full-frame: the decision that sets your price
An insert replacement fits the new window inside your existing frame. It is quicker and cheaper, keeps your trim untouched, and is the right call when the existing frame is sound. A full-frame replacement takes everything back to the rough opening: frame, sill, and trim. It costs more, and it is the only honest option when there is rot, when the opening is out of square, or when the original windows were never properly flashed. This single choice moves a quote more than any brand decision, and a company that quotes you without checking which one your openings need is guessing.
Glass package
Double-pane with low-E coatings and gas fill is the sensible baseline here. Northern Virginia is a mixed climate, so both label numbers matter: U-factor for keeping heat in through January, and solar heat gain coefficient for keeping a west-facing room from cooking in August. The right package is not identical on every side of the house, and speccing it wall by wall costs little compared to what it does for comfort.
Will new windows pay for themselves in energy savings?
They will help, and anyone promising you a specific percentage is guessing. If your current windows are single-pane or the seals have failed, the difference is obvious and immediate. If they are decent double-pane units, the honest answer is that your attic insulation is probably the better first investment, and we will tell you that at the kitchen table. Windows are one part of a building envelope; they are not the whole story, and we would rather you spend your budget where it works hardest.
Why quotes for the same house refuse to match
Three things explain most of the spread. First, insert versus full-frame: two companies quoting different scopes are not quoting the same job. Second, the sales model: high-pressure operations carry big marketing and commission costs, which is part of how a window becomes $2,500. Third, what is included: capping the exterior trim, hauling away the old windows, and repairing what turns up under a rotten sill are either in the price or they are surprises later. Our price is written after we measure every opening, and it does not change at the kitchen table, with no today-only discount theater. The written price covers everything we can see and measure. If tear-off uncovers rotted decking, sheathing or framing, that repair is priced at the per-unit rate written on your contract and approved by you before we continue.
A worksheet for comparing window quotes opening by opening
To compare window quotes, copy each one onto the same sheet, opening by opening, so that a low number and a high number describe the same job. Here is the sheet we suggest.
| Line item | What to write down from each quote | Why it matters |
|---|---|---|
| Number and style of openings | How many windows, and the style of each: double-hung, casement, slider, picture, bay or bow. | A bay or bow can price like several double-hungs, so equal counts can mean different work. |
| Product line and frame material | Brand, the exact product line, and the frame material: vinyl, fiberglass, wood-clad or composite. | “Vinyl” covers many products. The line name lets you compare like with like. |
| Installation method | Insert or full-frame, marked for each opening rather than for the whole house. | This choice moves the price more than any other line. We confirm the right method for each opening at the free estimate visit, not from a phone description. |
| Glass specification | Double or triple pane, low-e coating, and argon fill. | Packages differ between product lines and can differ between sides of the same house. |
| Performance label | The NFRC U-factor and SHGC as printed on the label for the exact product quoted. If ENERGY STAR certification is claimed, confirm the product qualifies for the ENERGY STAR climate zone that applies to your address. | The label comes from the same test on every brand, so glass can be compared across quotes. |
| Exterior trim and capping | Aluminum-wrapped, replaced with new trim, or left as it is. | A visible item that some quotes leave out and others bundle in. |
| Disposal of the old units | Whether hauling away the old windows is in the price. | Small, but it shows up later if nobody wrote it down. |
| Possible concealed-damage work | The unit price for repairing a rotted sill or framing, stated up front, with a change order signed before that work begins. | Rot is often hidden until the old unit is out, and a written unit price keeps that conversation short. |
| Warranties, listed separately | The manufacturer’s product warranty and the installer’s workmanship warranty, each on its own line. | Different companies, different coverage. Ours is a lifetime warranty with workmanship covered in full, and we show you the manufacturer’s actual terms for the line you choose. |
Two more notes. Phased replacement is fine when it suits the homeowner; we do not require a whole-house minimum. And no quote should carry a fixed energy-savings promise: what you save depends on the windows you have now and on the rest of the house, so compare the NFRC label numbers instead.
When you are ready to fill in our column, request a written window replacement estimate and we will measure every opening.
When replacement is actually worth it
Not every tired window needs replacing this year, and spending $15,000 a season early helps nobody. The clear signals: fog or condensation between the panes (a failed seal, and the insulating gas is already gone), sashes that will not stay up or will not open, soft or discolored wood around the frame, and drafts you can feel from across the room. Our guide to the signs you need new windows walks through which symptoms are urgent and which are false alarms, and if you are weighing styles, the window styles guide covers what fits Northern Virginia houses. When we come out to measure, windows with years left get left alone; we would rather earn the project when it is real.
How long does it take?
Installation is typically one day, and larger whole-house jobs can run two or three. The wait is manufacturing: windows are built to your opening sizes, so the weeks in a window project happen at the factory, not in your house. Ordering ahead of the season you care about is the practical move.
Sunshine Contracting is a replacement company; we do not take repair-only jobs, except warranty service on our own installations.
Planning both? Read should you replace windows and siding together.
Window cost FAQs
How much do replacement windows cost per window?
Most installed replacement windows run $600 to $1,200 each with us, with whole-house projects typically landing between $8,000 and $25,000. Window count, style mix, frame material, glass package, and insert-versus-full-frame scope move the number. We pin it down by measuring every opening, free.
What warranty comes with new windows?
Our window installations carry a lifetime workmanship warranty. The glass and mechanical parts are covered by the manufacturer’s own warranty, which varies by brand and line, and we show you the actual terms for whatever you are considering rather than summarizing them.
Can I replace windows in phases?
Yes, and for many budgets it is the smart play: worst windows first, usually the weather-facing sides, then the rest as budget allows. Phasing costs slightly more per window than doing everything at once, but it beats stretching one project too thin. Financing is also available if you would rather do it all in one pass.
Get the exact number for your windows
Schedule a free estimate. We measure every opening, check the frames honestly, and leave a firm written price with no pressure to sign on the spot. Serving all of Northern Virginia from Woodbridge since 1993.
