Window cleaning in San Dimas, CA

Homes in San Dimas

San Dimas has 33,789 people in 15 square miles. Census Reporter lists the median home value at $801,800.

Wikipedia describes the city as nestled along the foothills of the San Gabriel Mountains, with the mountains bounding it on the north, at an elevation of about 955 feet. The I-210 freeway, SR-57 and Arrow Highway run through it, and Cinnamon Creek crosses the city. The ZIP code is 91773.

Water in San Dimas and what it does to glass

Golden State Water Company serves San Dimas. Its report describes a blend of treated groundwater from the Main San Gabriel Basin, surface water from Covina Valley Water Company and imported water. Total hardness averaged 205 mg/L, with a range of 85 to 307 mg/L. The report gives it as an average of 12 grains per gallon, ranging from 5.0 to 18. On the USGS scale, anything over 180 mg/L is "very hard".

Whether Golden State serves every address in the city was not confirmed in what we read. The glass is the check. Very hard water leaves heavy white rings where a sprinkler hits a window, and they build faster than in lower-hardness cities. If you have crust, tell us in your quote request and we will text you for a photo. We quote removal from the photo, from about $6 a window on top, and never add it without asking. The hard-water guide covers prevention.

Wind, dust and sun

Foothill cities get the Santa Ana winds that blow mostly October to February. We found a 2012 Patch post on a National Weather Service wind advisory for the San Gabriel Valley foothills with gusts up to 50 mph. We found nothing specific to San Dimas, so we do not claim a local number. Ash and dust from a wind or brush-fire day are mostly a dirt problem, and a wet rinse with pure water removes them.

HOAs, roofs and solar panels

If you have solar, we clean panels on single-story roofs from the ground, $6 a panel, with a $110 minimum. We never walk a roof, and we do not clean arrays on second-story roofs. We did not find a named master-planned HOA community in San Dimas, so check your own association for contractor rules.

San Dimas electric service and solar billing

San Dimas is on an SCE service territory city list. That list is dated 2010, so your bill is the way to confirm your utility today.

The CPUC says the Net Billing Tariff applies to customers who submit an interconnection application on or after April 15, 2023. Customers on the NEM 2.0 tariff are allowed to remain on it for 20 years from the date they interconnected. Your interconnection date decides which applies. For scale, a University of California San Diego study of 186 California sites found that, on average, sites would have yielded 0.81 percent more annual energy if they had been washed halfway through the summer drought. It did not report results for this city, so yours can differ. Rain does much of the work in a wet winter.

San Dimas solar permits and association rules

San Dimas Municipal Code Chapter 15.06 covers small residential rooftop solar. Under it, the building department issues a permit within three business days of the filing of the application when the plan meets the city checklist and standard plan. Only one inspection by the building department is required. Under Civil Code 714, an association restriction that effectively bans solar is void. We found no named master-planned association in San Dimas.

Which of our services fit San Dimas

San Dimas is 11.3 miles from Ontario. Windows on a plan are the start. Older homes may have window counts that differ from what the home-size shortcut guesses, so type in your real window count if you know it. Holiday lights run mid-November to mid-December, about $4 a foot of roofline with the lights included.

Guides worth reading

• Window Cleaning Cost in the Inland Empire
• Hard-Water Spots on Windows in the Inland Empire
• Santa Ana Winds, Dust, Windows and Solar Panels

Questions from San Dimas homeowners

Sources

1. U.S. Census Bureau, American Community Survey, latest release shown by Census Reporter, for San Dimas. “33,789... square miles”
2. U.S. Census Bureau, American Community Survey, latest release shown by Census Reporter, for San Dimas. “$801,800... housing units”
3. Wikipedia, "San Dimas, California" (foothills location). “nestled along the foothills of the San Gabriel Mountains”
4. Golden State Water Company, San Dimas 2025 Consumer Confidence Report (supply and hardness in mg/L and grains per gallon). “blend of treated groundwater pumped from the Main San Gabriel Basin, local surface water wholesaled by the Covina Valley Water Company, and imported water”
5. Golden State Water Company, San Dimas 2025 Consumer Confidence Report (supply and hardness in mg/L and grains per gallon). “hardness [as CaCO3] (mg/L) n/a n/a 85 - 307 205 2025”
6. USGS Water Science School, "Hardness of water" (classes: soft 0-60, moderately hard 61-120, hard 121-180, very hard over 180 mg/L; hard water and spots on glassware). “more than 180 mg/L as very hard”
7. NOAA Technical Memorandum NWS WR-270, "Climate of San Diego" (Santa Ana winds commonly occur October to February; December most frequent). “Santa Ana winds commonly occur between October and February”
8. Patch, "Wind advisory issued for foothills, San Gabriel Valley," February 16, 2012 (NWS advisory, gusts up to 50 mph). “wind advisory for Santa Ana winds blowing at 20 to 30 mph with gusts up to 50 mph”
9. SCE service territory cities list (2010). “san buenaventura san dimas san fernando”
10. CPUC, Net Billing Tariff (applies to interconnection applications on or after April 15, 2023). “The NBT will apply to customers who submit an interconnection application on or after April 15, 2023”
11. CPUC, NEM page (NEM 2.0 customers stay 20 years from interconnection). “customer-generators are allowed to remain on the NEM 2.0 tariff for 20 years from the date they interconnected”
12. Mejia and Kleissl (2013), "Soiling losses for solar photovoltaic systems in California," Solar Energy (UC San Diego; 186 sites, 2010). “0.81% more annual energy if they had been washed halfway through the summer drought period”
13. San Dimas Municipal Code Chapter 15.06 (small residential rooftop solar). “the building department shall issue a non-discretionary permit within three business days of the filing of the application”
14. California Civil Code section 714 (california.public.law). “effectively prohibits or restricts the installation or use of a solar energy system is void and unenforceable”

Checked 2026-10-31.