How much does it cost to replace a single window in Fairfax County, VA?

A single double-hung window replacement in Fairfax County typically costs between **$305 and $1,225**, with an average of **$715**. This reflects a 1.02x local services adjustment applied to national averages, driven by area labor rates of $28.52 per hour.

What does a full-home window replacement cost in Fairfax County?

A full-home project covering 10 windows ranges from **$5,100 to $15,300**, with an average of **$8,670** in Fairfax County. The exact cost depends on window type, frame material, glass options, and accessibility of each opening.

Why are window replacement costs slightly higher in Fairfax County than the national average?

Local installation labor in the Washington-Arlington-Alexandria metro averages **$28.52 per hour**, compared to the national average of **$27.75 per hour**. This produces a 1.02x services adjustment, with 60% of the factor driven by labor and 40% passed through at national materials pricing.

What climate zone is Fairfax County in, and how does it affect window selection?

Fairfax County is in **IECC Climate Zone 4A** (mixed-humid), classified in the DOE north HVAC region. Windows must balance winter insulation and summer solar heat control. Low-E, multi-pane options with moisture-resistant frames perform best in this zone.

How much does electricity cost in Virginia, and can new windows lower my bill?

Virginia residential electricity costs **$0.159 per kWh** as of January 2026. Energy-efficient replacement windows reduce heating and cooling loss, lowering HVAC energy consumption year-round in this Zone 4A climate where both heating and cooling are necessary.

What natural hazards in Fairfax County should influence my window choice?

Fairfax County has a FEMA National Risk Index score of **94.66 out of 100**. Key threats to windows include winter weather (score 98.19), hail (95.10), hurricanes (93.03), and inland flooding (97.01). Impact-resistant glass and tight weathersealing are strongly recommended.

What financing options are available for window replacement in Fairfax County?

With the 30-year mortgage rate at **6.38%** and a median home value of **$699,700**, most homeowners have strong equity for HELOCs or home improvement loans. A 10-window project averaging $8,670 represents about 1.2% of the median home value, and many installers offer promotional financing terms.

REGIONAL COST GUIDE · Fairfax County, VA

How Much Does Window Replacement Cost in Fairfax County, VA?

Window replacement in Fairfax County, VA averages $715 per window. See local cost ranges, labor rates, hazard considerations, and financing options for 2026.

Cost range $305 – $1,225

Average $715

Updated April 12, 2026

Compare Free Window Replacement Quotes

COST BREAKDOWN

What homeowners in Fairfax County actually pay.

Local market ranges built from regional labor, materials, and permitting data — not national averages.

Single Window Replacement (Double-Hung)

$305 Avg: $715 $1,225

Full Home Replacement (10 Windows)

$5,100 Avg: $8,670 $15,300

Bay / Bow Window

$1,530 Avg: $2,550 $4,080

National avg $700 × 1.02x local adjustment = $715

Why Fairfax County prices look like this.

Replacing windows in Fairfax County, VA is a significant investment that can improve your home's comfort, energy efficiency, and curb appeal. With a median home value of $699,700 across the county's 43 ZIP codes, homeowners here tend to invest in quality upgrades that protect and enhance property value. Fairfax County sits in a very high cost tier at 4.06x the national average home value, reflecting the premium real estate market in the Washington-Arlington-Alexandria metro area. A single double-hung window replacement in the county typically costs around $715, while a full-home project covering 10 windows averages $8,670. Specialty installations like bay or bow windows run about $2,550 on average. These local estimates reflect a 1.02x services adjustment driven by area labor rates that slightly exceed the national average. Below we break down the factors that influence your final quote, from labor and hazard exposure to climate requirements and financing.

Labor Costs for Window Installation in Fairfax County

Labor is a major component of window replacement costs in Fairfax County. According to 2024 Bureau of Labor Statistics data, roofers and exterior installation workers in the Washington-Arlington-Alexandria, DC-VA-MD-WV metro earn an average of $28.52 per hour, or $59,330 annually. The metro area employs approximately 2,160 workers in this trade (SOC 472181). The local hourly wage is slightly above the national average of $27.75 per hour, producing the 1.02x services adjustment applied to project costs. This adjustment blends a 40% materials pass-through with 60% labor weighting, meaning most of the local cost difference comes from labor rather than materials. A typical single-window installation takes two to four hours of on-site labor, so the per-window labor component runs roughly $57 to $114 at local rates. When comparing quotes, ask installers for an itemized breakdown so you can see exactly how labor hours and material costs contribute to your total.

Natural Hazard Risks That Affect Window Choices in Fairfax County

Fairfax County carries a FEMA National Risk Index score of 94.66 out of 100, classified as Relatively High overall. This matters for window replacement because several hazards directly threaten window integrity. Winter weather scores 98.19 (Very High) and ice storms score 81.51 (Relatively Moderate), meaning windows must withstand freeze-thaw cycles, ice accumulation, and wind-driven precipitation. Hail risk is 95.10 (Relatively High), making impact-resistant glass a worthwhile consideration. Hurricane exposure scores 93.03 (Relatively Moderate) and inland flooding reaches 97.01 (Relatively High), both of which can stress window seals and frames. Lightning risk is also Very High at 97.87. On the lower end, tornado risk is 54.48 (Relatively Low) and wildfire is 33.97 (Very Low). When selecting replacement windows, prioritize impact resistance, tight weathersealing, and materials rated for the county's combination of high moisture and severe winter conditions.

Climate Zone Considerations for Replacement Windows

Fairfax County falls within IECC Climate Zone 4A under the 2021 International Energy Conservation Code. The zone number 4 places the area in a mixed climate with meaningful heating and cooling demands, while the A moisture designation reflects a humid environment year-round. The Department of Energy classifies this area in the north HVAC region. This climate profile has direct implications for window selection. Replacement windows need to balance winter insulation performance against summer solar heat gain, making low-emissivity coatings and multi-pane designs particularly effective here. The humid conditions in Zone 4A also mean that window frame materials must resist moisture-related degradation over time. Vinyl, fiberglass, and composite frames generally perform well in this climate. When evaluating quotes, confirm that proposed windows are rated for Zone 4 energy performance standards, as properly climate-matched windows deliver the best long-term return on your investment.

Energy Savings from New Windows in Virginia

Energy savings are a key reason homeowners in Fairfax County replace windows. As of January 2026, Virginia residential electricity costs $0.159 per kWh. Older single-pane or failing double-pane windows allow significant heating and cooling loss, and upgrading to modern energy-efficient windows reduces the load on your HVAC system. In a county where both winter heating and summer cooling are necessary (IECC Zone 4A, DOE north region), the cumulative savings add up throughout the year. At $0.159 per kWh, even modest efficiency gains translate into meaningful dollar savings over a typical 15-to-20-year window lifespan. For a full 10-window replacement project averaging $8,670, the payback period depends on your current window condition and energy usage, but most homeowners see noticeable reductions in their monthly utility bills within the first heating season. Many ENERGY STAR-certified replacement windows also qualify for federal tax credits, which can further offset your upfront cost.

Financing Window Replacement in Fairfax County

Financing a window replacement project in Fairfax County is manageable through several options. As of March 26, 2026, the average 30-year fixed mortgage rate stands at 6.38%, which influences home equity loan and HELOC rates commonly used for renovation funding. With a county median home value of $699,700 and median annual property taxes of $7,072, most homeowners have substantial equity available to tap. A full 10-window replacement averaging $8,670 represents roughly 1.2% of the median home value, making it a relatively modest investment relative to property worth. Home improvement loans, HELOC lines, and manufacturer financing plans are all common options, and some installers offer promotional zero-interest terms for 12 to 18 months. The county's very high cost tier (4.06x the national average home value) means that quality window upgrades tend to hold their value well in this competitive Washington-area housing market.

Move on this

Compare Window Replacement quotes in Fairfax County, VA.

Tell us about your project — we'll match you with up to three licensed, insured pros nearby. Usually within 24 hours.

Get Free Quotes Free · No obligation

Find Local Window Replacement Providers Near You

Enter your ZIP to see rated window replacement pros serving your area.

ZIP code

FREQUENTLY ASKED · 07

Questions buyers ask about window replacement in Fairfax County.

Short answers to the most common things we hear about local pricing, scope, and timing.

How much does it cost to replace a single window in Fairfax County, VA?

A single double-hung window replacement in Fairfax County typically costs between **$305 and $1,225**, with an average of **$715**. This reflects a 1.02x local services adjustment applied to national averages, driven by area labor rates of $28.52 per hour.
What does a full-home window replacement cost in Fairfax County?

A full-home project covering 10 windows ranges from **$5,100 to $15,300**, with an average of **$8,670** in Fairfax County. The exact cost depends on window type, frame material, glass options, and accessibility of each opening.
Why are window replacement costs slightly higher in Fairfax County than the national average?

Local installation labor in the Washington-Arlington-Alexandria metro averages **$28.52 per hour**, compared to the national average of **$27.75 per hour**. This produces a 1.02x services adjustment, with 60% of the factor driven by labor and 40% passed through at national materials pricing.
What climate zone is Fairfax County in, and how does it affect window selection?

Fairfax County is in **IECC Climate Zone 4A** (mixed-humid), classified in the DOE north HVAC region. Windows must balance winter insulation and summer solar heat control. Low-E, multi-pane options with moisture-resistant frames perform best in this zone.
How much does electricity cost in Virginia, and can new windows lower my bill?

Virginia residential electricity costs **$0.159 per kWh** as of January 2026. Energy-efficient replacement windows reduce heating and cooling loss, lowering HVAC energy consumption year-round in this Zone 4A climate where both heating and cooling are necessary.
What natural hazards in Fairfax County should influence my window choice?

Fairfax County has a FEMA National Risk Index score of **94.66 out of 100**. Key threats to windows include winter weather (score 98.19), hail (95.10), hurricanes (93.03), and inland flooding (97.01). Impact-resistant glass and tight weathersealing are strongly recommended.
What financing options are available for window replacement in Fairfax County?

With the 30-year mortgage rate at **6.38%** and a median home value of **$699,700**, most homeowners have strong equity for HELOCs or home improvement loans. A 10-window project averaging $8,670 represents about 1.2% of the median home value, and many installers offer promotional financing terms.

SOURCES · 08

How these numbers were built.

Cost estimates are derived from government data including the U.S. Census Bureau (ACS), Bureau of Labor Statistics (OEWS), FEMA National Risk Index, EIA energy data, IECC climate zone classifications, Federal Reserve (FRED), and HUD Fair Market Rents.