Wilmington, DE Replacement Window Prices: Vinyl, Wood and Fiberglass (2027)
Price your windows in Wilmington, DE
A 10-window vinyl replacement in Wilmington comes in around $4,700 to $7,940 with installation. Each double-hung unit lands near $469.19-$793.15, and $5,590 is the price we would plan around.
Those figures use our windows calculator with its standard options: Low-E glass with argon fill, basic build quality, no grids and the existing interior trim reused. Prices here run about 4% below the national average. There is no real city premium here: Wilmington quotes sit right around the statewide figure of $4,660 to $7,880.
Window Replacement Cost in Wilmington by Frame Material
Here is the same 10-window job in each frame the calculator offers. Wood runs $7,450 to $12,590 and fiberglass $8,070 to $13,640, so vinyl wins on price by a wide margin. Not every opening is a double-hung. Per window in Wilmington: $558.56 for double-hung, $880.77 for a slider, $3,228.83 for a bay or bow unit.
| Frame (10 double-hung windows) | Installed cost | Estimate | Per window |
|---|---|---|---|
| Vinyl | $4,700 to $7,940 | $5,590 | $469.19 – $793.15 |
| Wood | $7,450 to $12,590 | $8,870 | $744.69 – $1,258.88 |
| Fiberglass | $8,070 to $13,640 | $9,610 | $806.60 – $1,363.54 |
| Aluminum | $7,760 to $13,120 | $9,240 | $775.64 – $1,311.21 |
Price per Window by Style
| Style (vinyl) | Installed, per window | Estimate |
|---|---|---|
| Double-hung | $469.19 to $793.15 | $558.56 |
| Sliding (2-lite) | $739.84 to $1,250.69 | $880.77 |
| Bay or bow | $2,712.22 to $4,584.94 | $3,228.83 |
Build Your Order: Upgrades for 10 Windows
Each add-on below is the change from the base job of 10 vinyl windows - our estimate, before the low/high spread:
Glass, Frames and the Wilmington Seasons
Winter lows near 27°F and warm summers mean the glass works year round. A balanced Low-E coating is the right call; skip it only to hit a tight budget.
Climate regions run from 1 (cool) to 5 (hot); Delaware sits in region 3.
Salt air is hard on metal. For homes near the Delaware coast, vinyl ($4,700 to $7,940) or fiberglass ($8,070 to $13,640) frames hold up better than aluminum ($7,760 to $13,120), and stainless or coated hardware keeps locks and balances from seizing.
Damp air works on wood. Wood frames ($7,450 to $12,590 for this job) need regular paint and caulk upkeep in Wilmington; vinyl and fiberglass do not rot, which is a fair reason to choose them.
Cold winters are where the glass package earns its keep. The base price includes Low-E with argon; giving up the argon saves just $120 for 10 windows, so it is worth keeping.
Window swaps happen one opening at a time, so crews work most of the year; booking in the slower months can shorten the wait. The closest city in this guide is Newark, roughly 10 miles to the southwest. If an installer serves both, its window prices are on a separate page for comparison.
How to Compare Window Bids in Wilmington
A window estimate is only as good as what it includes. Check each of these:
- Energy label. Every unit should carry an NFRC sticker; match its U-factor and SHGC to the quote.
- Interior repairs. Find out who patches drywall, plaster or paint around each opening.
- Payment terms. A modest deposit at order and the balance after the final walk-through is normal.
How Nearby Cities Price New Windows
How Wilmington compares with the rest of Delaware for this job:
- Dover, DE - $4,660 to $7,870 (40 mi south)
- Newark, DE - $4,640 to $7,850 (10 mi southwest)
- Middletown, DE - $4,670 to $7,900 (20 mi south)
Window Replacement Questions
Do premium frames pay off?
Fiberglass costs $8,070 to $13,640 for the job above against $4,700 to $7,940 for vinyl. It is stiffer, expands less and takes paint, so it suits dark colors and large openings; for most standard windows, vinyl gives more value per dollar.
What is the timeline from quote to install?
Installation of 10 windows is typically a one- or two-day job, with each opening closed up the same day. The wait for made-to-order units is usually the longer part.
How much is a single new window in Wilmington?
Our estimate puts one vinyl double-hung at $469.19 to $793.15, set and sealed. Size, style and frame change that figure more than the city does.
Treat these numbers as a budget guide for Wilmington. They come from our windows calculator with local cost factors; an in-home measure gives the exact figure.
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Delaware Windows costs (statewide) · Windows costs in every state
