Most homeowners pay $650–$950 per window installed.
10-window projects usually cost $6,500–$12,000.
Retrofit installation is the most affordable option.
Full-frame installation costs 30–50% more.
Coastal areas like Rehoboth Beach can increase costs by 20–35%.
Winter installations may cost less than summer projects.
Installation type and location impact price more than brand.
In 2026, most homeowners in Delaware pay between $650 and $950 per window installed. This price includes both the window itself and professional installation.
Basic vinyl replacements can cost as little as $450 per window, while larger or coastal-impact windows can range from $1,200 to $2,200 per window.
For a typical home replacing 10 windows, total costs usually fall between:
$6,500 and $12,000
Basic vinyl replacement: $450–$650 per window
Standard mid-range window: $650–$950 per window
Full-frame installation: $1,000–$1,600 per window
Coastal or impact-rated window: $1,400–$2,200 per window
Costs vary based on:
Where you live in Delaware
Whether you’re near the coast
If the existing window frame needs repairs
The type of window you choose
Homes near Rehoboth Beach or Bethany Beach often require stronger, impact-rated windows due to coastal weather conditions. These can increase costs by 20–35% compared to inland homes like Dover.
Use our cost estimator tool for window installation for a quick estimate based on your requirements.
A homeowner in central Delaware installing 12 standard vinyl replacement windows at $800 per window would expect:
Total cost: ~$9,600
Labor portion: ~$4,000
Material portion: ~$5,600
The same project near the coast using impact-rated windows could exceed $17,000.
For most homes in Delaware:
Expect around $650–$950 per window installed
Coastal and structural upgrades cost more
Installation type affects price more than brand
The biggest factor affecting your total price in Delaware isn’t the brand — it’s the installation type.
There are three main types:
Replacement (Retrofit)
Full-Frame Installation
New Construction Installation
Each one changes labor time, permit needs, and total cost.
This is the most common and most affordable option.
The installer removes the old window but keeps the existing frame in place.
$450–$950 per window installed
10 windows: $4,500–$9,500
Materials: ~60%
Labor: ~40%
Disposal: Small added fee
Permit: Usually NOT required (if no structural changes)
30–60 minutes per window
Most homes completed in one day
Frames that are still in good condition
Standard vinyl or composite windows
Homeowners wanting the lowest cost option
This is more extensive. The entire window frame is removed down to the rough opening.
It costs more, but it solves hidden damage issues.
$1,000–$1,600 per window
10 windows: $10,000–$16,000
Materials: ~50%
Labor: ~50%
Disposal: Higher than retrofit
Permit: Often required (structural exposure)
2–4 hours per window
2–3 days for a full home
More labor
More debris removal
Possible framing repairs
New insulation and flashing
Full-frame installation typically costs 30–50% more than retrofit in Delaware.
This applies mainly to new homes or major renovations where walls are already open.
It can also apply if you’re adding a new window opening.
During new build: $800–$1,500 per window
Cutting into existing wall: $1,200–$2,000+ per window
Materials: 50–60%
Labor: 35–45%
Structural modification: Can increase labor significantly
Permit: Required
Installed during framing (new build)
4–6 hours per opening if adding to existing wall
| Installation Type | Cost Per Window | Permit Required | Best For |
|---|---|---|---|
| Retrofit | $450–$950 | Usually No | Budget-friendly replacement |
| Full-Frame | $1,000–$1,600 | Often Yes | Structural upgrades |
| New Construction | $800–$2,000+ | Yes | New builds or additions |
Retrofit = lowest cost
Full-frame = higher cost but deeper upgrade
New construction = for new builds or structural changes
For most Delaware homeowners replacing existing windows, retrofit installation is the most common and cost-effective option.
The type of window you choose can change your total cost just as much as the installation method.
Below are realistic 2026 installed price ranges across Delaware, including labor and materials.
This is the most common window type in Delaware homes.
$500–$900 per window
Affordable
Easy to clean
Works well in most homes
Very common in older homes in Wilmington and suburban areas like Newark.
These open outward using a crank.
$650–$1,100 per window
More hardware
Better air sealing
Higher energy efficiency
Good for improving insulation in Delaware’s mixed humid climate.
These slide horizontally and are common in mid-century or ranch-style homes.
$550–$1,000 per window
Wide wall openings
Contemporary designs
Lower budget compared to casement
Fixed windows that do not open.
$700–$1,400 per window
Larger glass area
Heavier units
Often custom-sized
Popular in newer developments in Kent and Sussex counties.
These extend outward from the home and create interior space.
$2,000–$5,500 per unit
Structural framing changes
Roof or support system modifications
Larger glass surface
Full-frame installation is usually required.
Designed to withstand high wind and flying debris.
$1,400–$2,500 per window
Homes near:
Rehoboth Beach
Bethany Beach
Typically 20–35% more expensive than standard double-pane windows due to reinforced glass and stronger framing.
| Window Type | Average Installed Cost | Most Common Use |
|---|---|---|
| Double-Hung | $500–$900 | Standard residential |
| Casement | $650–$1,100 | Energy efficiency upgrades |
| Sliding | $550–$1,000 | Wide openings |
| Picture | $700–$1,400 | Large fixed views |
| Bay / Bow | $2,000–$5,500 | Architectural feature |
| Impact-Rated | $1,400–$2,500 | Coastal protection |
Double-hung windows are the most affordable and common choice.
Casement and picture windows cost more but improve insulation.
Bay and bow windows are premium upgrades.
Coastal homes pay more due to impact requirements.
For total project modeling by number of windows and installation type, readers can reference the main Window Installation Cost Calculator page for full cost comparisons across states.
Labor is one of the biggest parts of your total window installation cost in Delaware. In 2026, homeowners typically pay:
$150 to $400 per window in labor alone, depending on installation type and complexity.
For a 10-window project, total labor costs usually fall between:
$1,500 and $4,000
Try our labor cost calculator for better estimates.
Most professional window installers in Delaware charge:
$60–$100 per hour per installer
Jobs usually require a 2-person crew
Minimum service call: often 3–4 hours
That means even small projects can have a labor floor of $500–$800.
Labor rates are generally higher in northern areas like Wilmington and slightly lower in central and southern areas such as Dover.
| Installation Type | Typical Labor Per Window | Time Required |
|---|---|---|
| Retrofit (Insert) | $150–$300 | 30–60 minutes |
| Full-Frame | $300–$600 | 2–4 hours |
| New Opening (Cut-In) | $500–$900 | 4–6 hours |
Retrofit jobs are quicker and cheaper because the existing frame remains in place.
Full-frame installations require removing trim, flashing, and sometimes repairing framing, which increases labor time.
Labor costs rise when:
Windows are on second or third floors
Exterior is brick, stucco, or stone
Structural framing repairs are needed
The home is historic
Coastal reinforcement is required
Homes near Rehoboth Beach or Bethany Beach may require extra sealing and anchoring due to coastal weather conditions, which increases labor time.
If you replace 12 standard vinyl windows using retrofit installation:
Labor per window: ~$250
Total labor: ~$3,000
Project time: 1 full day
If the same project requires full-frame installation:
Labor per window: ~$450
Total labor: ~$5,400
Project time: 2–3 days
Most contractors include basic debris removal in their labor fee, but some charge separately:
Disposal fee: $50–$150 per window
Dumpster rental (large projects): $300–$600
Always confirm this in writing before signing a contract.
Expect labor to make up 35–50% of your total window installation cost in Delaware.
Retrofit installation keeps labor costs lowest.
Full-frame and structural modifications increase labor significantly.
Coastal and upper-floor installations cost more due to added time and safety requirements.
For full cost modeling including materials and window type, refer to the main Window Installation Cost Calculator resource on this site to compare Delaware pricing with national averages.
Window installation costs vary across Delaware depending on labor rates, housing age, permit enforcement, and coastal building requirements.
While the statewide average is $650–$950 per window installed, certain cities trend higher or lower.
$700–$1,050 per window
Older housing stock (more full-frame replacements)
Higher contractor labor rates
Historic district restrictions in some neighborhoods
Brick exteriors increase labor time
Full-frame installations are more common here than in other parts of the state.
$650–$950 per window
Mix of older and newer homes
Strong contractor competition
Mostly retrofit installations
Typical 10-window project: $6,500–$9,500
$600–$900 per window
Lower average labor rates
Fewer historic structural upgrades
Less coastal reinforcement required
Retrofit installations are very common here.
$1,000–$1,800 per window
Coastal wind exposure
Impact-rated glass requirements
Corrosion-resistant framing
Higher demand during peak season
Expect costs to be 20–35% higher than inland Delaware.
$1,100–$2,000 per window
Storm protection upgrades
Strict coastal construction standards
Seasonal labor demand spikes
Full-frame and impact-rated installations are common.
| City | Average Installed Cost | Typical Cost Level |
|---|---|---|
| Wilmington | $700–$1,050 | Higher |
| Newark | $650–$950 | Moderate |
| Dover | $600–$900 | Lower |
| Rehoboth Beach | $1,000–$1,800 | Coastal Premium |
| Bethany Beach | $1,100–$2,000 | Highest |
If you live inland in Kent or New Castle County, expect pricing close to the statewide average.
If you live near the coast in Sussex County, budget significantly higher due to storm protection and building requirements.
In Delaware, a permit is usually not required for simple window replacements where the size stays the same and no structural framing is changed. This applies to most retrofit (insert) installations in areas like Dover and Newark.
A permit is required if you resize the window, cut a new opening, or modify structural framing. Historic homes and properties in Wilmington may face stricter rules.
In coastal areas such as Rehoboth Beach, impact and wind standards may require additional documentation.
Permit fees typically range from $50–$200. When required, inspections usually occur after installation and add a small cost increase. Always confirm requirements with your local building department before starting work.
All window installations in Delaware must meet state building and energy codes. Delaware follows the International Energy Conservation Code (IECC) and is classified as Climate Zone 4A (Mixed-Humid), which sets minimum performance standards for residential windows.
Most replacement windows must meet:
Maximum U-Factor: 0.30
Maximum SHGC: 0.40
In simple terms, U-Factor measures insulation (lower is better), and SHGC measures how much heat enters your home. Most modern double-pane Low-E windows already meet these standards.
Bedroom windows must also meet egress safety rules, meaning they must be large enough for emergency escape. If resizing is required to meet code, costs increase.
In coastal areas like Rehoboth Beach, higher wind ratings or impact-resistant glass may be required, increasing material costs by 20–35% compared to inland homes such as Dover.
Historic areas in Wilmington may require specific materials or design approval.
For most inland homes, code compliance adds 5–15% to material costs, depending on glass performance and structural requirements.
Always consult with the local authorities first before procceding
If your home is located near Delaware’s Atlantic coastline, window installation costs are significantly higher than inland areas.
Homes in coastal communities like:
Rehoboth Beach
Bethany Beach
often require upgraded window systems designed to handle:
Higher wind speeds
Wind-borne debris
Salt air corrosion
Heavy seasonal storms
These requirements increase both material and labor costs.
In 2026, coastal Delaware homeowners typically pay:
20–35% more per window compared to inland installations
Standard inland window: $700–$900
Coastal impact-rated window: $1,400–$2,200
For a 10-window home:
Inland project: ~$8,000
Coastal impact-rated project: $14,000–$20,000+
Impact-rated windows use:
Laminated glass layers
Reinforced interlayers
Stronger seals
These prevent shattering during high-wind events.
This alone can increase material costs by $300–$800 per window.
Coastal windows must withstand stronger wind loads.
This requires:
Thicker frames
Reinforced corners
Stronger anchoring systems
Higher DP ratings increase both product cost and installation time.
Salt air accelerates corrosion.
Many coastal installations use:
Stainless steel fasteners
Upgraded hardware
Special protective coatings
These upgrades add to material costs but extend window lifespan.
Coastal municipalities often:
Enforce wind-load documentation
Require product approval paperwork
Conduct more detailed inspections
This can add labor time and permit-related costs.
Inland Home in Dover
12 vinyl retrofit windows
~$800 per window
Total: ~$9,600
Coastal Home in Rehoboth Beach
12 impact-rated full-frame windows
~$1,700 per window
Total: ~$20,400
Same window count — over $10,000 difference.
Inland Delaware homes follow standard pricing.
Coastal Sussex County homes pay significantly more.
Impact-rated systems can increase costs by 20–35%.
Labor and inspection complexity also rise near the coast.
If you live near Delaware’s shoreline, always budget for higher-performance windows and longer installation timelines.
Window installation costs in Delaware change throughout the year based on contractor demand, weather conditions, and supply chain fluctuations.
While the statewide average remains $650–$950 per window installed, the time of year can shift pricing by 5–20%.
Pricing Level: Moderate to High
Spring marks the beginning of peak home improvement season.
Demand increases
Contractor schedules fill quickly
Prices begin rising
Average cost impact:
5–10% higher than winter pricing
Spring is popular for full-frame projects due to mild weather.
Pricing Level: Highest of the Year
Summer is peak season in Delaware, especially in:
Wilmington
Rehoboth Beach
Factors driving higher costs:
Strong demand
Coastal renovation season
Vacation home upgrades
Limited contractor availability
Average cost impact:
10–20% higher than winter pricing
Coastal areas see the largest seasonal spikes due to storm preparation upgrades.
Pricing Level: Moderate
Fall is a balanced season for pricing.
Demand stabilizes
Weather remains workable
Contractors may offer modest discounts
Average cost impact:
Similar to spring
Slightly lower than summer
This is often one of the best times for full-frame installations.
Pricing Level: Lowest
Winter is typically the slowest season for contractors in Delaware.
Fewer renovation projects
More schedule flexibility
Potential off-season discounts
Average cost impact:
5–15% lower than peak summer pricing
Many homeowners assume winter installation is impossible, but modern installation methods allow year-round replacement — especially for retrofit jobs.
10-window standard vinyl retrofit project:
Winter estimate: ~$7,500
Summer estimate: ~$8,500–$9,000
Same project. Same materials. Different season.
If your goal is:
Lowest price: Winter
Balanced pricing and weather: Fall
Fastest scheduling availability: Winter
Storm preparation (coastal homes): Early spring
Summer = highest pricing
Winter = lowest pricing
Fall often offers the best balance
Coastal demand magnifies seasonal swings
Planning your project timing can reduce total cost by hundreds — sometimes thousands — of dollars.
Many homeowners ask:
Is window installation more expensive in Delaware than the U.S. average?
Short Answer:
Delaware pricing is very close to the national average, but coastal areas push state averages slightly higher.
| Location | Average Per Window Installed | 10-Window Project |
|---|---|---|
| U.S. National Average | $600–$1,200 | $6,000–$12,000 |
| Delaware (Statewide Avg.) | $650–$950 | $6,500–$12,000 |
| Coastal Delaware | $1,000–$2,000+ | $14,000–$20,000+ |
Delaware is:
A smaller state with moderate labor costs
Located in a mixed-humid climate (not extreme heat or cold)
Not subject to hurricane-level building codes like Florida
Because of this, standard inland window installations in cities like Dover or Newark typically align closely with national averages.
Costs trend above national averages in:
Rehoboth Beach
Bethany Beach
Reasons include:
Coastal wind-load compliance
Impact-rated window systems
Higher seasonal demand
Corrosion-resistant hardware
Coastal projects can exceed national averages by 25–40%.
| Region | Typical Labor Per Window |
|---|---|
| National Average | $150–$350 |
| Delaware Inland | $150–$400 |
| Delaware Coastal | $250–$600 |
Labor in northern Delaware (near Wilmington) can also run slightly above the national midpoint due to contractor demand density.
Material costs are largely consistent nationwide because:
Major window brands price regionally
Supply chains are national
ENERGY STAR standards are standardized
The main price differences in Delaware come from:
Coastal upgrades
Historic district requirements
Full-frame structural replacements
10 standard vinyl retrofit windows:
Midwest U.S.: ~$7,000
Inland Delaware: ~$8,000
Coastal Delaware: ~$15,000+
The material is similar — local compliance and exposure conditions create the gap.
Delaware inland pricing closely mirrors national averages.
Coastal Delaware costs significantly more.
The biggest price differences come from installation type and local building requirements — not brand alone.
Understanding this comparison helps homeowners set realistic expectations before requesting quotes.
Window installation costs vary based on a few key factors. Here’s what impacts your price the most:
Installation type – Retrofit (insert) is the most affordable. Full-frame costs 30–50% more. Cutting a new opening is the most expensive option.
Window size – Larger or custom-sized windows cost more. A standard double-hung runs $650–$900, while oversized picture windows can reach $1,200–$2,000+.
Frame material – Vinyl is the most affordable. Composite and fiberglass cost more. Wood is premium and often required in historic areas of Wilmington.
Glass upgrades – Low-E coatings, argon gas, triple-pane, or impact glass increase cost. Coastal impact windows near Rehoboth Beach can add $300–$800 per window.
Coastal location – Homes near the coast may require higher wind ratings and reinforced systems, increasing total costs by 20–35% compared to inland areas like Dover.
Structural repairs – Wood rot or framing damage can add $100–$300 per window, with major repairs exceeding $500 per opening.
Floor level & access – Second- or third-story installations may add $100–$300 per window due to added labor and safety setup.
Permit requirements – Structural changes may require permits costing $50–$200, increasing total project cost by about 3–8%.
Seasonal timing – Summer is typically the most expensive season. Winter installations may cost 5–15% less.
Number of windows installed – Larger projects often reduce the per-window price because labor setup is spread across more units.
Window installation in Delaware typically costs $650–$950 per window installed, with most 10-window projects ranging from $6,500 to $12,000.
Coastal homes near Rehoboth Beach may pay significantly more due to impact and wind requirements. Final pricing depends mainly on installation type, window size, and structural condition.
Understanding these factors helps you budget accurately and avoid surprises when requesting contractor quotes.
Most homeowners pay between $6,500 and $12,000 to install 10 standard windows in Delaware. Coastal or full-frame installations can raise costs to $14,000–$20,000+, depending on window type, structural repairs, and permit requirements.
A permit is usually not required for simple retrofit replacements where the window size stays the same. Structural changes, resizing, or new openings typically require a permit and inspection from your local Delaware municipality.
Impact windows are often recommended in coastal areas like Rehoboth Beach and Bethany Beach due to wind-load exposure. Some municipalities and insurance providers may require higher-rated windows for storm protection and structural compliance.
Yes. Winter is typically the slowest season for contractors, and pricing can be 5–15% lower than peak summer rates. Modern installation methods allow safe year-round window replacement despite colder temperatures.
Standard vinyl double-hung windows with retrofit installation are the most affordable option in Delaware. Installed prices typically range from $450 to $900 per window, depending on size and labor complexity.
