Replacement window installation companies

Looking for replacement window installation companies in Washington, DC? Call WindowInstallation Services for a contact a provider — no obligation. Licensed installers serve Washington and the surrounding area, and you'll get straight answers on timing and what affects the price.

Last updated: September 24, 2026

Local housing snapshot: Washington, DC

Population: about 672,000
Median year homes were built: 1957
Homes built before 1980: 70%
Owner-occupied homes: 41%

Older homes can mean different materials, wiring, venting or permit needs. Mention your home's age when you contact a provider.

Source: U.S. Census Bureau, American Community Survey 2019–2023 5-year estimates.

What affects the price

When you look at replacing windows, the final number depends on a few moving parts. The biggest factor is the frame material—vinyl is usually the most budget-friendly, while wood or fiberglass carries a higher price tag. The style of window also matters; a simple double-hung unit costs less to install than a large bay or bow window. You will also want to consider the glass packages, like double versus triple pane, which affect energy efficiency. Complexity of the job, such as needing lead paint remediation or structural repairs, can add to the total. Exact pricing confirmed free on the call.

About this service

These companies are businesses that specialize in both selling windows and performing the labor to install them. You need to contact one when you want a one-stop-shop approach to your home improvement project. They take responsibility for the entire process, from taking precise measurements to handling the disposal of your old windows. Using a specialized company is often the most efficient way to ensure that your new windows are covered by a solid warranty and installed correctly.

Frequently asked in Washington

What is the average cost of installing a window in Washington, D.C.?

What is the correct way to install a window in Washington, D.C.?

Correct window installation in D.C. involves meticulous attention to detail, especially in historic areas, to ensure a proper seal against weather and drafts. Pros will meticulously flash, seal, and secure the frame, respecting building codes and maintaining structural integrity.

How much does a company charge to install windows per window in Washington, D.C.?

Is it cheaper to install windows yourself in Washington, D.C.?

How much should it cost to install windows in my Washington, D.C. home?

The total cost for window installation in your D.C. home depends on the number of windows, their style, and any necessary modifications. The most accurate way to determine this cost is by consulting with a professional for a free, personalized estimate.

Who is the best replacement window installation company in Washington, D.C.?

Also serving nearby: Alexandria · Baltimore · Richmond · Reading · Philadelphia

All cities in District of Columbia →

More on this: DOE window guidance — install vs replace decisions.

Service area details

678,972residents

11,107per sq mile

8ZIP codes served

Serving all of Washington — population 678,972; about 11,107 residents per square mile across 61.1 sq mi. ZIP codes covered include 20001, 20002, 20003, 20004, 20005, 20006, 20007, 20008.

Neighborhoods served in Washington: Georgetown, Capitol Hill, Dupont Circle, Penn Quarter, Adams Morgan — and every surrounding area.