Preserve the character of your DC home with expert window replacement. From Georgetown row houses to Capitol Hill Victorians and Navy Yard condos, we install energy-efficient, historically appropriate windows throughout the nation capital.
20+
Years Experience
4.9
Star Rating
847+
5-Star Reviews
DC
Washington
Why DC Chooses Us
DC homeowners trust us for historic preservation expertise, premium materials, and window installations that honor the character of this historic city.
We understand DC historic preservation requirements from Georgetown to Capitol Hill.
Fully licensed and insured for window work in the District of Columbia. DC homeowners, condo boards, and property managers can hire us with complete confidence.
We help DC homeowners meet the Green Building Act requirements with Low-E coatings, argon gas fills, and high-performance glazing that keeps row houses.
From Georgetown mansions to Capitol Hill row houses to Navy Yard condos, we have replaced windows in every type of DC property.
Our Arlington headquarters is just across the Potomac. We reach any DC neighborhood quickly for measurements, installations, and service calls --.
DC homeowners consistently rate us 4.9 out of 5 stars. We are trusted for expert craftsmanship, historic sensitivity, and installations that respect the.
Our Window Styles
From period-appropriate historic replacements to modern energy-efficient upgrades, we install every window type DC homes need.
The quintessential DC row house window. Period-appropriate profiles available with true or simulated divided lights.
View DetailsCrank-out operation with excellent ventilation. Popular for DC kitchens, sunrooms, and additions where maximum airflow is desired.
View DetailsAdd depth and character to DC living rooms and parlors. Custom-built to fit the specific dimensions of your bay.
View DetailsLarge fixed-pane windows that maximize light in DC homes. Perfect for framing garden views or flooding north-facing rooms with light.
View DetailsHorizontal operation ideal for DC basement egress windows and contemporary renovations. Code-compliant sizing available.
View DetailsPeriod-appropriate replacement windows for DC historic districts. HPO-compliant profiles with true divided lights and wood-grain finishes.
View DetailsService Area
We replace and repair windows in every quadrant of Washington, DC -- NW, NE, SE, and SW.
Do not see your neighborhood? We serve all of Washington, DC. Call (703) 679-7741 to confirm service in your area.
Our Process
From first call to finished installation, our process accounts for the unique requirements of DC homes including historic district review.
We visit your DC home, inspect existing windows, assess any historic district requirements, review permit needs, and take precise measurements. No cost,
We present window options tailored to your DC home, including historic-compliant profiles where required. Detailed written quote with full specifications.
Our certified installers carefully remove old windows, prepare openings, install new windows with proper insulation and flashing, and ensure airtight operation.
We test every window, verify seals and weatherstripping, clean up all debris, and walk you through operation, care, and warranty details.
Glass & Energy
DC homes face hot, humid summers and cold winters. Premium glass technology keeps your home comfortable while meeting DC Green Building Act standards.
Most Popular
Two panes with Low-E coating and argon gas fill. A dramatic upgrade from the single-pane windows found in many older DC row houses. Reduces energy costs, blocks UV damage, and eliminates cold drafts.
For Historic Homes
Thin-profile insulated glass designed for historic window frames. Provides modern energy performance with slim sightlines that satisfy DC HPO requirements. True divided-light and simulated divided-light options available.
Noise Reduction
Laminated glass with a sound-dampening interlayer. Ideal for DC homes near busy streets, Metro lines, or nightlife corridors. Reduces outside noise by up to 50 percent and provides enhanced security against forced entry.
Local Guide
Washington, DC is home to some of the most significant residential architecture on the East Coast. Georgetown Federal-style mansions, Capitol Hill Victorian row houses, Dupont Circle embassy-era townhomes, and Kalorama estates all feature distinctive window designs that contribute to the streetscape. Many of these homes still have original or early single-pane windows that are charming but terribly inefficient. Replacing these windows requires a company that understands both preservation requirements and modern energy technology -- and that is exactly what we do.
Approximately one-third of DC falls within historic districts overseen by the Historic Preservation Office and the Historic Preservation Review Board. Window replacement in these areas requires careful attention to profile, material, glazing pattern, and operation type. We have years of experience navigating this process. We provide HPRB-ready product specifications, assist with permit applications, and ensure every installation meets the city preservation standards. Our window options include true divided-light muntins, period-appropriate profiles, and wood-clad exteriors that replicate historic aesthetics.
DC row houses present unique window challenges. Many have tall, narrow window openings that require custom sizing. Party walls mean windows only face front and back, making energy efficiency critical since those are the primary surfaces exposed to weather. Brick and stone masonry surrounds require careful installation techniques to prevent moisture intrusion without damaging historic masonry. Our installers are trained in proper window installation techniques for masonry construction, including correct flashing, backer rod, and sealant application.
DC has some of the most aggressive green building requirements in the country. Our Energy Star certified replacement windows help homeowners meet and exceed these standards. By upgrading from single-pane to modern insulated windows, DC homeowners typically see a 25 to 40 percent reduction in heating and cooling costs. Combined with the improved comfort and noise reduction, new windows are one of the most impactful home improvements you can make in the District.
Trusted Locally
Georgetown Federal and Georgian row houses require HPRB-approved window replacements. We offer period-appropriate profiles with true divided lights that satisfy Old Georgetown Board review while providing modern energy performance.
Victorian and Federal row houses on the Hill feature tall, narrow window openings with distinctive arched transoms. We custom-fabricate windows to fit these unique dimensions while meeting Capitol Hill Historic District standards.
Grand Victorian townhomes and embassy-era residences in these neighborhoods benefit from our experience with oversized windows, leaded glass replications, and noise-reducing glazing for homes near busy Connecticut Avenue.
Modern condos in Navy Yard feature floor-to-ceiling windows and sliding glass walls. We replace builder-grade glazing with high-performance Low-E glass that reduces solar heat gain and glare from southern exposure.
These upper Northwest neighborhoods feature large single-family homes and co-op apartments. We handle full-house replacement projects and coordinate with co-op boards for building-wide window upgrades.
These revitalized neighborhoods feature a mix of renovated row houses and new construction. We install energy-efficient windows that complement both restored historic homes and contemporary infill development.
Common Questions
Answers to the questions DC homeowners ask most about window replacement and historic preservation compliance.
Yes. Washington, DC has extensive historic districts, and we have deep experience working within DC Historic Preservation Office (HPO) and Historic Preservation Review Board (HPRB) requirements. We provide period-appropriate window options that satisfy historic review while delivering modern energy performance. We supply all documentation needed for permit applications.
Most single window replacements take 1 to 2 hours per window. A typical DC row house or townhome with 10 to 15 windows is usually completed in 2 to 3 days. Historic homes requiring custom-fabricated windows may have a longer lead time for manufacturing, but installation itself is efficient.
Yes. We regularly replace windows in DC condos and apartment buildings in Georgetown, Dupont Circle, Logan Circle, Navy Yard, and throughout the city. We coordinate with building management, carry all required insurance, and comply with condo association window specifications.
Yes. Foggy or cloudy windows indicate a failed seal between the panes. We can replace just the insulated glass unit without replacing the entire frame, saving significant cost. This is especially common in DC homes renovated in the 1990s and early 2000s.
All of our replacement windows meet or exceed DC building and energy codes, including the DC Green Building Act requirements. We install Energy Star certified windows and provide all documentation needed for permit compliance. For historic district homes, we ensure windows meet both energy and preservation requirements.
Yes. We provide emergency window board-up and repair services throughout Washington, DC. If a window is broken due to a storm, accident, or break-in, call us at (703) 679-7741 anytime. We respond quickly from our nearby Arlington headquarters to secure your property.
Have a question not listed here?
Call (703) 679-7741Our Difference
We navigate DC HPO and HPRB requirements, provide approved product options, and ensure every installation in a historic district meets the District strict preservation standards.
DC row houses are primarily brick and stone construction. Our installers are trained in proper window installation techniques for masonry, including correct flashing and sealant protocols.
We offer window profiles with true divided lights, simulated divided lights, and wood-clad exteriors that replicate the look of original historic windows while providing modern insulation.
We protect your DC home with drop cloths, shoe covers, and corner guards. We vacuum all construction dust, haul away old windows, and leave your home spotless.
All replacement windows meet DC Green Building Act and energy code requirements. We provide full documentation for permit compliance and energy performance verification.
Our quotes detail every component: window type, glass configuration, grille pattern, hardware, installation labor, and permit fees. No hidden costs or surprise charges.
Complete window repair, replacement, and installation services.
Learn MoreInterior and exterior glass door installation.
Learn MoreCustom frameless and semi-frameless shower enclosures.
Learn MoreRoom dividers and office glass partition walls.
Learn MoreCustom mirror cutting, installation, and replacement.
Learn MoreInterior and exterior glass railing systems.
Learn MoreEmergency board-up and same-day glass repair.
Learn MoreRequest a free on-site consultation and quote.
Learn MoreWhile we are proud to serve Washington, DC, our window replacement service extends throughout Northern Virginia and Maryland.
Schedule a free in-home consultation. We will inspect your current windows, discuss historic-compatible options, and provide a detailed written quote.
Free Window Inspection
We assess every window in your DC home
Historic Compliance Review
HPO-ready specs for historic districts
Written Quote
Detailed pricing with no hidden fees or surprises
No Pressure
Take your time deciding -- no obligation whatsoever