Vinyl Window Replacement cost: Charleston vs Mount Pleasant (2026)
Vinyl window replacement costs about the same in Charleston and Mount Pleasant in 2026 — roughly $10,300 in each.
Charleston SC
Typically around $10,300
Mount Pleasant SC
Typically around $10,300
Charleston vs Mount Pleasant: full breakdown
| Factor | Charleston | Mount Pleasant |
|---|---|---|
| Typical 2026 cost | $10,300 | $10,300 |
| Estimated range | $5,200–$15,350 | $5,200–$15,350 |
| Labor index (vs US) | ×0.99 | ×0.99 |
| Climate zone | Hot | Hot |
| Climate factor | ×1.02 | ×1.02 |
| Local permit | $125 | $125 |
| Labor share | $5,650 | $5,650 |
| Materials/equipment | $4,650 | $4,650 |
Localized 2026 planning estimates — not quotes. Each city adjusts the national vinyl window replacement range for local labor, climate and permits.
A wash — choose on quality, not city
The two metros are effectively a wash for vinyl window replacement — pick on contractor quality and timing, not location.
Vinyl window replacement by type: Charleston vs Mount Pleasant
Each vinyl window replacement option, priced separately for both metros — the same local labor, climate and permit adjustments applied per city, so you can compare like for like.
| Type | Charleston | Mount Pleasant |
|---|---|---|
| Double-hung | $5,200–$12,300 | $5,200–$12,300 |
| Sliding | $4,700–$11,300 | $4,700–$11,300 |
| Casement | $6,200–$14,350 | $6,200–$14,350 |
| Picture | $6,700–$14,350 | $6,700–$14,350 |
| Bay / bow | $9,250–$18,400 | $9,250–$18,400 |
Localized 2026 planning ranges by type — not quotes.
Vinyl window replacement by number of windows: Charleston vs Mount Pleasant
Vinyl window replacement is priced per window — figure roughly $450–$1,000 each installed for standard double-hung units, including labor and disposal. Cost scales almost linearly with the number of openings you replace at once.
| Size | Charleston | Mount Pleasant |
|---|---|---|
| 5 windows | $2,650–$5,200 | $2,650–$5,200 |
| 10 windows | $5,200–$9,750 | $5,200–$9,750 |
| 15 windows | $7,750–$14,350 | $7,750–$14,350 |
| 20 windows | $10,250–$18,400 | $10,250–$18,400 |
| 25+ windows (whole home) | $12,800–$22,450 | $12,800–$22,450 |
Localized 2026 ranges by number of windows — not quotes.
Cheapest time for vinyl window replacement in either city
Window installers slow down in cold months and manufacturers run their deepest promotions in fall and winter, so off-season buyers catch both labor discounts and rebates.
How much should new windows really cost you?
Frame material, glass package and install type decide the price. Our editors on what's worth paying for.
The value case
Vinyl, double-pane, low-E windows deliver most of the comfort and efficiency for the lowest price. For whole-home replacements on a budget, they're the sensible default.
The efficiency case
In extreme climates, triple-pane or premium low-E/gas-fill glass pays back in comfort and bills — and ENERGY STAR units may unlock rebates. Spend on the glass package before the frame upgrade.
The install case
A perfect window installed badly leaks and fails. Full-frame replacement with proper flashing beats a cheap pocket insert in a rotted opening — match the install method to your home's condition, not just the price.
Buy the glass package your climate needs, default to vinyl frames unless you have a reason not to, and never let install quality be the thing you cut to hit a number.
Charleston vs Mount Pleasant
Is vinyl window replacement cheaper in Charleston or Mount Pleasant?
In 2026, vinyl window replacement costs about the same in both — roughly $10,300 in each city.
Why does vinyl window replacement cost more in Mount Pleasant than Charleston?
The main driver is local labor rates: Mount Pleasant's labor index is 0.99 versus 0.99 in Charleston. Climate zone (hot vs hot) also shift the total.
How much is vinyl window replacement in Charleston, SC?
In Charleston, vinyl window replacement typically runs $5,200–$15,350 in 2026, with most homeowners paying around $10,300.
When is the cheapest time to buy vinyl window replacement — and does it differ by city?
The best window is the same in both Charleston and Mount Pleasant: Late fall and winter, when demand drops and installers discount to keep crews busy — typically 5–15% off peak pricing. The most expensive time anywhere is an emergency replacement during spring and summer peak.
Should I choose where to live based on vinyl window replacement cost?
No — the cost is essentially identical between Charleston and Mount Pleasant. Base the decision on the things that actually vary: contractor reputation, scope, equipment tier and timing.
Compare vinyl window replacement in other cities
Updated June 2026 · By Serhat Özçelik