Los Angeles County · Westside · 249 ft
Sonlight serves the Flats, the hillside canyons above Sunset, Trousdale, Beverlywood and the business triangle. We opened in Southern California in 2026 after 48 years in Colorado, and what we brought is a straightforward approach to two things Beverly Hills has in abundance: very hard imported water, and glass that is difficult and expensive to reach.
Beverly Hills buys its water from the Metropolitan Water District, which means the supply is dominated by Colorado River Aqueduct water at roughly sixteen grains per gallon after evaporating its way across two hundred and forty miles of open aqueduct. That is the hard end of very hard by any standard. Combine it with landscape irrigation running twelve months a year, no rain from May through November, and full sun that evaporates a sprinkler pass off a pane within minutes, and you get the defining local glass problem. It is not dirt. It is bonded calcium carbonate, and washing does not dissolve carbonate, which is why the same spots survive repeated cleanings and homeowners conclude the glass is ruined.
The second local factor is the jacaranda. Beverly Hills has jacaranda-lined streets, and every May the same conversation happens. The purple is beautiful and the sticky film that lands on everything under it is neither nectar nor sap: it is honeydew, aphid excretion, raining down continuously through a bloom that runs from late April to mid June. Fresh honeydew comes off with water and very little else. Left on hot glass in full sun it cooks into the surface and then black sooty mold grows on the sugar. The practical answer is to schedule early July rather than May, and we will say so rather than selling a clean that gets undone in a week.
Third is access. The hillside canyons above Sunset and the Trousdale estates are built for the view, which means two-story window walls facing downslope with nothing level underneath them. That is the glass the owner actually cares about and the glass most often quietly skipped, because reaching it safely takes pole reach, staging or rope work and none of that fits a per-window average. We resolve access before quoting and list those elevations as their own line, so the cost of the view is visible rather than buried.
Four variables decide what is on a window in Southern California and what it takes to get it off: which water you drink, how much ocean you get, where the wind comes from, and how long it goes without raining. Here is where Beverly Hills sits on each.
Southern California does not run on the four seasons that window cleaning advice usually assumes. Beverly Hills follows the Westside calendar, which is the actual year in the order it happens and what each phase does to your glass.
What it does to glass
Almost all of the year's rain arrives in this window, with February the wettest month. The first storm of the season is the destructive one for appearance: it wets six months of accumulated salt and dust just enough to mobilise it, then dries it into vertical streaking that follows the pane. Canyon runoff and hillside splash add a mineral band to the bottom of ground-floor glass.
What we do about it
We push Westside customers to clean in late October rather than after the first storm. Going into the wet season with clean glass means the rain lands on nothing and the house looks right through winter instead of looking worst on the first grey day.
What it does to glass
May and June are the cloudiest months on this coast, around fifty-nine and fifty-eight percent sunny days respectively. Fog is not rain and rinses nothing. It wets the dust already on the glass, holds it there all morning, and dries it into a mottled film when the sun finally cuts through. It also keeps salt in solution on the surface for hours at a time, which is when it does its damage.
What we do about it
Exterior work gets sequenced by sun rather than by side of house: sun-facing elevations first, shaded elevations after the layer lifts. Cleaning into a marine layer dries slowly and unevenly, and that is where streaking on north faces comes from.
What it does to glass
Seven months with no rinse. Everything that lands stays: road film, construction dust, pollen, jacaranda honeydew, and a continuous salt drift. Irrigation running through the whole stretch adds mineral to any pane a head can reach, and there is no rain to dilute it.
What we do about it
Three visits a year is the honest recommendation for most Westside homes rather than two, and we say so. We also walk the irrigation before leaving and point out which heads are hitting glass, because moving one head is worth more than an extra service call.
What it does to glass
Offshore wind funnels through the canyons at fifty to seventy miles an hour. Debris arrives from inland, so the elevation that gets loaded is the one facing away from the ocean, which is the opposite of what most owners expect. Fine grit packs into tracks and weep holes and abrades screen mesh.
What we do about it
Tracks are cleared dry before any water touches the window. Wetting embedded silica and dragging a squeegee through it is how glass gets scratched, and this is the season it happens. Exterior work booked into an active wind event gets rescheduled at no charge.
What it does to glass
Jacaranda honeydew, which is aphid excretion rather than sap, rains continuously onto anything under a blooming tree. Fresh, it rinses off with water. Left on hot glass it cooks into the surface and then grows black sooty mold on the sugar.
What we do about it
On jacaranda blocks we recommend early July rather than May, once the drop has finished, and we will tell you which panes are worth hosing down in the meantime rather than selling you a clean that gets undone in a week.
The full regional guide, including what makes Westside different from the rest of the metro, is on our The Westside and the Malibu Coast page.
This is the single highest-probability route to permanently etched glass in Beverly Hills, and it is almost entirely preventable. A head clips a pane three mornings a week, mineral-loaded water sheets down, the sun evaporates it in minutes, and the calcium stays. Under about five years of buildup, restoration lifts it completely. Past a decade in this sun it has moved into the silica. Before we leave we point out exactly which heads are hitting glass, because moving one head is worth more than the restoration we would otherwise sell annually.
Cleaned in mid-May, a jacaranda block is undone within a week. Left through the bloom without any intervention, honeydew bakes onto sun-facing panes and then grows black sooty mold on the sugar, which is a biological problem rather than a film. The right answer is early July, once the drop finishes, with a hose-down of the worst south-facing panes in between if they are getting hit hard.
Leaded panels, art glass and original divided lights are routine features of a Beverly Hills house and are not replaceable in any meaningful sense. They need hand cleaning, water kept off the frame, no impact loads, and no cold water on sun-heated glass. The damage aggressive cleaning does to these assemblies is permanent, and we would rather take longer than take that risk.
Pricing is per property: square footage, window count, stories and access. Here is a real Beverly Hills example:
Example: Two-story 4,200 sqft Flats home, roughly 42 windows including divided-light casements and a two-story stair window
Interior only
$620
Exterior only
$690
Both (most popular)
$1150
Mineral restoration for irrigation etching is quoted separately. It is a different job than washing, and pretending otherwise is how customers end up paying twice. Get an exact price for your Beverly Hills address in 30 seconds.
Wide streets, mature jacaranda and large period-revival houses. Honeydew and hard-water spotting are the two recurring issues and they need opposite timing.
Mid-century and contemporary with sweeping downslope glass. Access is the whole job here; the panes worth cleaning are the ones with no ladder position.
Canyon lots above Sunset with hard access and real Santa Ana funneling. Also genuine wildland interface, so smoke residue is a factor in some years.
Long driveways, hillside builds and heavy canopy. Leaf and seed load in the tracks is higher here than anywhere else in the city.
Tighter postwar and traditional stock with more conventional access. Hard-water spotting from irrigation is the dominant complaint.
Storefront and mid-rise commercial glass on route schedules. Street-level glass needs a shorter interval than anything residential in the city.
Steep lots, mature sycamore and oak, and afternoon shade that keeps organic growth alive on north elevations longer than the rest of the city.
ZIP codes served: 90210, 90211, 90212
Interior and exterior glass, screens off the frame and hand-washed, and tracks cleared dry before any water touches the window.
The service this metro actually needs most. Most of Greater LA drinks 12 to 18 grain water, and irrigation overspray does more permanent damage to glass here than anything airborne.
Title 24 has put an array on nearly every home built since 2020, and seven rainless months mean nothing washes them. Measured California soiling is around 7 percent across a dry summer.
Near the coast salt pits the frame and hardens the spline years before the mesh looks worn. Inland, Santa Ana grit abrades it. Rescreening is routine here, not an upsell.
Low-pressure washing for stucco. Pressure drives water into a stucco wall assembly where it has nowhere to go, and the damage shows up months later.
Driveways, walks and hardscape, with a degreasing step where corridor oil is in the concrete. We keep pressure off stucco entirely.
Cement, stucco and gypsum fines cure onto new glass and are harder than it is. Dry-wiping them scratches permanently. This needs a dedicated flooded pass.
Only where your roof actually has gutters. Barrel tile here frequently carries partial runs, and low-slope roofs drain through scuppers instead. We check before quoting.
Because they are mineral rather than dirt, and washing does not dissolve carbonate. Beverly Hills is on imported Metropolitan supply at roughly sixteen grains per gallon, so every irrigation pass or hose rinse that dries on the glass leaves calcium behind. It needs a controlled acidic restoration rather than another wash, and then it needs the sprinkler that is causing it moved, or it comes back next season.
It is honeydew, which is aphid excretion rather than tree sap. It will not damage glass if it is dealt with, but left on a hot pane it hardens and then black sooty mold grows on the sugar, which is much harder to remove. Fresh, it comes off with water. That is why we recommend cleaning jacaranda blocks in early July after the drop finishes rather than in the middle of the bloom.
Yes, and it is the part of the job worth asking every bidder about. Water-fed pole reach handles a good deal of it, staging handles more, and above that we work rope descent. We resolve access before quoting and list the difficult elevations as their own line so you can see what they cost rather than paying a blended rate that quietly excludes them.
Yes, by hand and carefully. Leaded panels flex and the came softens with age, so they get no pressure, no pole systems and no thermal shock from cold water on sun-heated glass. Where we find a panel that is already bowing or a failed solder joint we photograph it and tell you rather than working past it.
See the full Greater Los Angeles service area and Southern California window care guide.
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