Local research · updated July 2026
Replacement Windows in Washington, District of Columbia
Washington is a rowhouse city with a preservation office that takes windows seriously. About 70.3% of the District's 356,101 housing units were built before 1980, with a median year built of 1957 — Federal-style flat-fronts on Capitol Hill, Wardman porch-front rowhouses across Northwest and Northeast, and projecting bays fitted with original wood double-hungs. A remarkable share of that stock sits inside designated historic districts, where replacing a street-facing window is a regulated act, not a shopping trip. Layer on a genuinely mixed climate — humid, air-conditioned summers and real heating-season winters — and a DC window project has to clear three bars at once: preservation review, permit, and performance numbers that work in both directions.
Short answer
In Washington, a standard replacement window (double-hung, casement or slider) typically costs $610–$3,470 installed. Bay and bow windows run $3,050–$9,750+, and a sliding patio door $1,830–$6,095. Frame material and the glass package decide where a project lands in that range.
Planning ranges built from NREL and BLS cost data, localized to Washington with the BEA Regional Price Parity for Washington-Arlington-Alexandria, DC-VA-MD-WV (2024). How we estimate →
70.3%
of Washington homes were built before 1980, the era of single-pane and early aluminum windows
Source: U.S. Census Bureau, 2019–2023 ACS 5-Year Estimates
1957
median year built across Washington's 356,101 housing units
Source: U.S. Census Bureau, 2019–2023 ACS 5-Year Estimates
SHGC ≤ 0.4
the ENERGY STAR v7.0 number that matters most in the North-Central zone
Source: EPA ENERGY STAR v7.0
Window installers in Washington
Compare companies serving Washington. Request a free, no-obligation quote and we route it to the company or a vetted local installer.
| Company | Location | Request a quote |
|---|---|---|
 4.8 · 200,000+ reviews | North Bethesda, MD | Get a quote → |
| 1Champion Replacement Windows of BaltimoreChampion | Rosedale, MD | Get matched → |
| 2Champion Window CoChampion | Fairfax, VA | Get matched → |
| 3Pella Mid-AtlanticPella | Beltsville, MD | Get matched → |
| 4Pella Windows and Doors Showroom of Annapolis, MDPella | Annapolis, MD | Get matched → |
| 5Pella Windows and Doors Showroom of Beltsville, MDPella | Beltsville, MD | Get matched → |
| 6Pella Windows and Doors Showroom of Bethesda, MDPella | Bethesda, MD | Get matched → |
| 7Pella Windows and Doors Showroom of Lutherville-Timonium, MDPella | Timonium, MD | Get matched → |
| 8Pella Windows and Doors Showroom of Vienna, VAPella | Vienna, VA | Get matched → |
| 9Power Home RemodelingPower Home Remodeling | Silver Spring, MD | Get matched → |
| 10Thompson Creek Window Company LanhamThompson Creek | Lanham, MD | Get matched → |
| 11Universal Windows Direct of BaltimoreUniversal Windows Direct | Baltimore, MD | Get matched → |
| 12Window NationWindow Nation | Glen Burnie, MD | Get matched → |
| 13Window NationWindow Nation | Lorton, VA | Get matched → |
| 14Window World of BaltimoreWindow World | Baltimore, MD | Get matched → |
| 15Window World of Frederick CountyWindow World | Frederick, MD | Get matched → |
| 16Window World of Southern MarylandWindow World | Waldorf, MD | Get matched → |
| 17Window World of Washington DCWindow World | Chantilly, VA | Get matched → |
Renewal by Andersen of the Capital Region
4.8 · 200,000+ reviewsShowrooms in North Bethesda & Fairfax · serving the Washington metro
Full-service manufacturer and installer, transferable warranty, local crews. Why it's our Top Pick
Get a quote →Listings compiled from manufacturer dealer locators and public business records. Premier and Sponsored Partners pay for placement and are labeled as such; star ratings shown are reported by the partner, with the source and date beside them. See our advertising disclosure. Contacting a company shares your details with it (or a vetted local installer) so it can reach you about your project.
Are you a window company? Claim your listing to take quote requests from Washington homeowners directly.
What drives window decisions in Washington
- A huge share of DC housing falls within historic districts — Capitol Hill, Georgetown, Mount Pleasant, LeDroit Park, and dozens more — where window replacement is reviewed by the Historic Preservation Office (HPO) under the District's written window standards (DCMR Title 10-C, Chapter 23) before the Department of Buildings will issue a permit.
- The dominant housing type is the masonry rowhouse with wood double-hung sashes, often set in projecting bays; openings in these buildings are rarely square, sashes are frequently painted shut with failed cords, and bay windows add custom sizes and flashing work that stock replacements don't anticipate.
- DC sits in IECC climate zone 4A — mixed and moist — so both numbers on the NFRC label matter: U-factor for winter heating loss and SHGC for the long, humid cooling season. Single-metric shopping that works in Phoenix or Minneapolis leaves performance on the table here.
- Preservation review runs repair-first: HPO guidance favors restoring original sashes or adding storm windows over replacement, and where replacement is approved on street-facing elevations, the new units generally must match the historic profiles, muntin patterns, and sightlines — which usually rules out the cheapest stock vinyl.
Replacement windows & doors by type in Washington
Local cost ranges and North-Central-zone efficiency guidance for each window and door style, specific to Washington homes:
Ranges localized to Washington's cost level: national planning ranges shifted by the BEA Regional Price Parity for Washington-Arlington-Alexandria, DC-VA-MD-WV (108.9, U.S. = 100; 2024). How we estimate local costs →
Efficiency requirements for Washington's climate
Washington sits in the ENERGY STAR North-Central zone (IECC zone 4A (mixed, moist), District of Columbia). Under the v7.0 specification, qualifying windows need a U-factor of 0.25 or lower and an SHGC of 0.4 or lower. Mixed climate: good insulation matters most, with a moderate cap on solar gain so summer cooling costs stay in check.
Not sure what these numbers mean? Read our plain-English guide to U-factor and SHGC.
What replacement windows cost here
National installed-cost ranges are the honest baseline, but Washington layers on some of the strongest local cost drivers in the country. DC-area labor rates run well above national averages, and the housing stock compounds it: out-of-square masonry openings, projecting bays, and deteriorated wood sills push jobs toward custom-sized units and extra carpentry. In a historic district, Historic Preservation Office review adds time — clearance precedes the building permit — and often adds cost, because street-facing windows may need to replicate historic profiles rather than use stock product; wood or aluminum-clad units that satisfy review typically cost meaningfully more than builder-grade vinyl. Rear elevations are generally held to a looser standard, so many DC projects end up split: preservation-grade units on the front, standard product in back. Get openings measured individually before trusting any quote.
For a breakdown by frame material and install type, see our full cost guide.
Rebates & incentives in District of Columbia
The federal window tax credit (25C) ended for projects placed in service after December 31, 2025. If your windows were installed in 2025, you can still claim it on your 2025 return — but for new projects there is no federal window credit. State and utility programs are now the main source of window incentives.
DC's Department of Energy and Environment (DOEE) has launched its roughly $59 million in IRA HOMES/HEAR funding, largely channeled through the DC Sustainable Energy Utility to expand income-qualified electrification and affordable-housing retrofit programs rather than broad market-rate window rebates.
- DC Sustainable Energy Utility (DCSEU) residential programs. The DCSEU runs the District's flagship efficiency programs, with substantial rebates focused on electrification and HVAC equipment; windows are generally not a standalone rebate, but envelope work can be captured in income-qualified and whole-building projects. (DCSEU residential rebates (dcseu.com))
- DCSEU income-qualified and affordable housing programs. The Affordable Home Electrification Program and the Affordable Housing Retrofit Accelerator deliver no-cost comprehensive upgrades — including envelope measures — to income-qualified households and affordable multifamily buildings; demand is high and waitlists have applied. (DCSEU AHEP and IQEF program pages; DOEE Healthy Homes implementation)
The District enforces its own DC Energy Conservation Code — a heavily amended, stricter-than-baseline code (the current 2017 edition builds on the 2015 IECC) — so permitted window replacements must meet demanding U-factor and efficiency requirements.
Replacement windows in nearby metros
Not in Washington proper? These nearby markets carry the same local research: housing-age data, climate-zone specs, and current rebate status for each city:
Washington window replacement FAQ
›Do I need a permit to replace windows in Washington, DC?
Generally yes. The DC Department of Buildings (DOB) requires a permit for window replacement, and for straightforward like-for-like projects on one- and two-family homes the application can often be handled online — DOB's Homeowner's Center exists specifically to walk owners through it. The critical wrinkle is location: if your property is in a historic district or is a landmark, you must obtain Historic Preservation Office clearance before the permit can be issued, and DC explicitly requires a permit for window replacement on historic properties even when the work seems minor. Confirm your property's status and the current process with DOB before scheduling an installer.
›What efficiency numbers should replacement windows hit in DC?
Washington falls in the ENERGY STAR North-Central climate zone, and under the current ENERGY STAR version 7.0 residential criteria that means a U-factor of 0.25 or lower and a Solar Heat Gain Coefficient (SHGC) of 0.40 or lower. Both numbers genuinely matter here: DC is IECC zone 4A, mixed and moist, so you pay for heating loss in winter and solar gain through a long, humid cooling season. Treat those thresholds as a reasonable performance target when comparing NFRC labels, and verify the exact current criteria on the ENERGY STAR site before ordering.
›Are there rebates or tax credits for replacement windows in DC right now?
The federal 25C energy-efficient home improvement credit that covered qualifying windows expired on December 31, 2025, so it is no longer available for new projects. Locally, the DC Sustainable Energy Utility (DCSEU) is the main efficiency program administrator, but its residential rebates center on electrification measures — heat pumps, heat pump water heaters, and similar equipment — rather than windows, and its no-cost income-qualified home upgrade programs have had waitlists. In short: do not build a window budget around incentives. Check current DCSEU offerings directly before you buy, since programs and funding change by fiscal year.
›Can I replace the windows on my DC rowhouse if it's in a historic district?
Often yes, but the process and the product are both regulated. DC's codified window standards take a repair-first posture: if original sashes can be restored, the Historic Preservation Office will generally push in that direction, sometimes paired with storm windows for efficiency. Where replacement is justified, street-facing elevations are held to the strictest standard — new units typically must match the originals' profiles, muntin patterns, materials appearance, and sightlines, which usually rules out stock vinyl on the front. Rear and non-visible elevations get more flexibility. Talk to HPO early, before ordering anything; significant changes to a primary facade may require full Historic Preservation Review Board (HPRB) review rather than staff-level approval.
Sources
- — U.S. Census Bureau, American Community Survey 5-Year Estimates (B25034, B25035)
- — EPA ENERGY STAR Version 7.0 Residential Windows specification
- — DOE/PNNL IECC climate zone assignments by county
- — DC Office of Planning, Historic Preservation Office; DCMR Title 10-C, Chapter 23 (Window Standards)
- — IRS, 25C Energy Efficient Home Improvement Credit (P.L. 119-21)