Window Cleaning
Star’s Janitorial Services provides window cleaning in Concord, California and across the East Bay and Contra Costa County.
Interior and exterior commercial window cleaning that keeps storefronts, lobbies, and offices bright and streak-free.
Commercial window cleaning is about the glass people look through and the glass people look at: storefront windows, lobby curtain walls, office partitions and the entry doors that get touched a hundred times a day. We clean interior and exterior glass on a schedule that matches how quickly your location gets dirty.
What we clean
- Exterior ground-floor and reachable upper glass: storefront windows, entry doors, transoms and sidelights, cleaned with pole and squeegee work or water-fed pole equipment for higher reachable glass.
- Interior glass: lobby and conference room partitions, office sidelights, display cases, interior doors and mirrors.
- Frames, sills and tracks: wiped and cleared of debris so the glass stays cleaner longer and the window operates properly.
- Screens and hard-water spotting: screens brushed and rinsed; mineral spotting treated where it can be safely removed.
- Skylights and atrium glass: cleaned where safely reachable from the roof or interior with appropriate equipment.
Who this is for
Office buildings, medical and dental offices, restaurants and cafes, auto dealerships and multi-tenant properties in Concord and Contra Costa County. Storefronts on busy streets usually need exterior glass monthly; office buildings often run quarterly exterior with interior glass folded into the janitorial scope.
Service options
- Monthly, bi-monthly or quarterly exterior glass, scheduled during or outside business hours as you prefer.
- Interior glass added to an existing janitorial route so it is done on the same visit.
- One-time cleans for grand openings, post-construction, before a sale or inspection, or after a storm.
- Combined exterior packages: window cleaning scheduled alongside pressure washing or gutter cleaning to reduce mobilization visits.

Facilities we serve
We count the panes and note access on the walkthrough, so the quote is specific to your building and there are no surprises about what is reachable. Star's holds California Janitorial Services Registration #929771, and photo documentation is available for applicable services and projects.
Other services
Commercial & Office Cleaning
Recurring cleaning that keeps offices, lobbies, and workspaces presentable and productive.
Learn more →Recurring Janitorial Services
Scheduled nightly, weekly, or custom janitorial routes with detailed, per-visit scopes.
Learn more →Medical & Facility Cleaning
Cleaning programs customized for medical and patient-facing offices.
Learn more →