Diamond’s Window CleaningWindow cleaner in Santa Clara, CA

Diamond’s Window Cleaning is ranked #1 of 105 window cleaners in Santa Clara by CR Score, with 63 out of 100 as of November 2026. The score weighs reputation, credentials, review volume, recency, availability, trade focus, proximity, claimed profile, partnered and ContractorsRanked reviews. No business can pay to change its rank.

Diamond’s Window Cleaning is open 7 days a week. Its listed hours are Monday to Saturday, 6 AM – 6 PM; Sunday, 7 AM – 4 PM. On Saturdays it is open 6 AM to 6 PM, and on Sundays 7 AM to 4 PM. Hours come from the business listing; holiday hours may differ.

Serves Santa Clara and 11 towns within 15 miles: Cupertino, Sunnyvale, San Jose, Campbell, Saratoga, Milpitas, Mountain View, Communications Hill, Alum Rock, Los Gatos and Los Altos. The list is based on the business's location and the usual service radius for window cleaning. Confirm your address is covered when you call.

Diamond’s Window Cleaning has a rating of 5.0 from 69 Google reviews. The CR Score adjusts the star rating for review count, so a high rating from a few reviews counts for less than the same rating from many.

Call Diamond’s Window Cleaning on (408) 887-0464. Its website is linked in the key facts on this page. Ask for a written estimate before any work starts.