Window Installation
Replacement windows with code-compliant install and trim-out.
About Window Installation
Replacement windows with code-compliant install and trim-out.
Window Installation is one of the most requested offerings inside our Contractor & Home Improvement division across Washington DC, Maryland, and Virginia. Whether you own a single-family home, a townhome, or a small commercial property, our crews approach the work the same way — methodically, with the right equipment for the surface, and with a finish standard you can actually see when we leave the property.
Our licensed general contractors handle the projects most homeowners can't fit into a weekend — from a precise drywall patch to a multi-room flooring refresh. Clean job sites, clear timelines, written warranties.
Every window installation job is supervised by a Lillarians lead, fully insured, and backed by a written workmanship warranty. You get one point of contact from quote to final walk-through — no subcontractor shuffle, no day-of surprises.
What's Included
- ✓Pre-finished windows
- ✓Insulation & sealing
- ✓Interior trim-out
- ✓Haul-away old units
Window Installation in the field
Window Installation planned, prepared, executed, and cleaned up by a dedicated Lillarians crew.
Every window installation project receives a documented scope, on-site protection of surrounding plantings and surfaces, professional execution by trained crews, and a final walk-through so the finished result matches the written proposal you approved.
How a window installation project moves forward
On-Site Assessment
We walk the property, measure the work area, and confirm exactly what your window installation project requires — no guesswork, no surprises.
Written Proposal
You receive a clear, itemized written quote covering scope, materials, crew size, schedule, and warranty for the window installation work.
Scheduled Execution
A dedicated Lillarians crew arrives on time, protects the surrounding property, and completes the window installation work to the agreed standard.
Walk-Through & Warranty
We finish with a final walk-through, leave the site cleaner than we found it, and stand behind every window installation job with a written workmanship guarantee.
The right team for window installation
Homeowners across the DMV hire Lillarians Contractor for window installation because we treat every property like our own — careful site prep, the correct equipment for the surface, and a crew that respects your time, your landscaping, and your neighbors.
Licensed, insured, and reachable seven days a week at 703-400-4198 or info@lillarians.contractors.
- ●Licensed general contractors
- ●Written workmanship warranty
- ●Clean, dust-controlled job sites
- ●Itemized quotes with no surprise line items
Request a quote for
Window Installation
On-site assessment, itemized written quote, and a guaranteed start date.
More Home Improvement services
Interior Painting
Surface prep, premium paint, and clean lines for any interior room.
View →Exterior Painting
Siding, trim, and door painting with surface prep and primer.
View →Drywall Repair
Patch holes, tape seams, and texture-match for invisible repairs.
View →Flooring Installation
Hardwood, LVP, tile, and carpet install by experienced crews.
View →