Our own crews, our own equipment, photographed on Colorado Front Range jobs. Not stock photography.
Trusted by property managers, building maintenance teams, and HOAs from Fort Collins through Colorado Springs, and every Front Range city in between. Over 25,000 completed commercial jobs. Fully insured, OSHA-compliant, and scheduled around your tenants.
Request a Commercial BidFrom storefronts to skyscrapers, we have the equipment and expertise for any commercial project.
Multi-story office towers and residential high-rises. Rope descent, bosun chair, and water-fed pole systems.
Regularly scheduled interior and exterior cleaning for offices, retail spaces, restaurants, and medical facilities.
Condo complexes, townhome communities, and apartment buildings. Coordinate with HOA boards and management companies.
New builds, renovations, and remodels. We remove stickers, paint overspray, construction film, and debris from all glass surfaces.
Hard-to-reach skylights, atriums, and rooftop solar arrays. Improve light transmission and energy output.
Monthly, quarterly, or annual schedules. We handle the reminders, invoicing, and coordination so you don’t have to.
Sonlight is often taken for a residential company. By job count it is not. More than half the completed work in our scheduling system is commercial, and the accounts below are counted from our own customer file rather than assembled from a list of property types we could plausibly serve.
25,000+
Commercial jobs completed
1,600+
Commercial accounts on record
1978
Family-owned in Colorado since
Our own crews, our own equipment, photographed on Colorado Front Range jobs. Not stock photography.
Each count is the number of commercial accounts of that type on our books as of July 2026. If a property type is not listed, it is because we do not have accounts in it, not because we forgot to mention it.
Glass that faces a client the moment they walk in, and interior partition glass that nobody thinks about until it is filthy. Suite-by-suite access is usually the constraint, not the cleaning.
Scheduling: Before eight or after five, or on the weekend. We collect suite keys or badge in with building security, whichever the property runs on.
Common-area glass, lobbies, stairwells and clubhouse windows, plus a board that needs a bid it can read line by line and defend to owners.
Scheduling: Annual or semi-annual programmes booked a season ahead, with notice letters for residents whose patios we will cross.
Turnover cleans on a deadline, common areas on a schedule, and one point of contact across a portfolio rather than per building.
Scheduling: Recurring routes with consolidated invoicing. Turn cleans get slotted against the lease calendar, not ours.
Waiting-room glass that patients stare at for twenty minutes, and no disruption to a clinic day that runs on appointment slots.
Scheduling: Early morning before the first patient, or on a closed day. We work around the schedule; the schedule does not move for us.
Storefront glass carries grease film from the kitchen and hand marks from every customer, so it soils faster than any other commercial glass we clean.
Scheduling: Monthly or more often, before opening. Patio and window walls get done ahead of the season, not during it.
The display window is the advertisement. Streaks and fingerprints on it undo the merchandising behind it.
Scheduling: Before doors open, on a recurring cycle tuned to foot traffic rather than a fixed calendar.
Low glass takes handprints at child height, and everything has to happen with no one on site.
Scheduling: Breaks and summer. Anyone on a school campus works to the district's access and background-check requirements.
Guest-facing glass is judged the way a guest judges a room. Lobbies, restaurant glass and guest-room exteriors each need a different access plan.
Scheduling: Around occupancy, usually mid-week and shoulder season, floor by floor so no guest is disturbed twice.
Showroom glass is the whole building. It is large, it is uninterrupted, and streaking shows on every panel under showroom lighting.
Scheduling: Before the sales floor opens, on a tight monthly or bi-weekly cycle.
Interior glass fogs and marks constantly from humidity and contact, and mirrors need the same care as windows.
Scheduling: Off-peak hours, which for a gym means mid-morning or mid-afternoon.
High sanctuary glass, often leaded or stained, that needs a gentler method than a storefront does and access equipment a volunteer crew should not be using.
Scheduling: Weekdays, well clear of services and events.
This is written to be useful whether or not you hire us. If you are putting commercial window cleaning out to tender, these are the things that decide the price and the things that go wrong.
We count openings, not square feet. A bid lists interior and exterior separately, notes which elevations need what access method, and states what is excluded. If you have a previous vendor's invoice, send it and we will bid against the same scope so the comparison is real rather than approximate.
Ground-floor and second-storey glass is reached from a ladder or by hand. Above that we use water-fed poles from the ground, which is why a four-storey building often costs less per window than a two-storey one with obstructed footing. Where poles cannot reach, the job needs a lift, or on a true high-rise, rope descent from certified roof anchors using bosun chairs. Each of those changes both the price and the lead time, because equipment has to be scheduled and sited and anchor points have to be verified. Access is the single largest variable in a commercial bid, so tell us the building early rather than late.
Almost all commercial work happens outside business hours. What actually causes complaints is not the cleaning, it is the surprise: a crew on a patio during service, or a lift in the loading zone on a delivery morning. We agree the window and the staging area in advance and we send notice text for you to forward to tenants.
Most commercial glass is on a cycle: monthly for restaurants and dealerships, quarterly for offices and retail, twice a year for HOA common areas. A programme locks the price for the term and puts the scheduling on us. You should not have to remember to call.
Line-item bids, certificates of insurance on request, and a completion record for each visit. Property managers reporting to an owner or a board need paperwork that survives being forwarded, and boards in particular need a bid they can put in a packet.
Net-30 invoicing for commercial accounts. Cheque, ACH or card. Portfolios get one consolidated monthly statement rather than an invoice per property.
Writing the tender document itself? Our commercial window cleaning RFP guide is vendor-neutral and includes a scope template you can use with anyone.
Commercial accounts tend to call us for glass and then find out we already handle the adjacent work. The counts are completed jobs from our own records.
Winter route work for commercial and property-management accounts.
Included in most recurring exterior programmes.
Walkways, entries, loading areas and hardscape.
Usually scheduled alongside an interior glass visit.
Handover cleans on new and renovated commercial space.
Storefront and patio awnings.
High interior fixtures, done from the same lift as the glass.
Colorado's Front Range from Fort Collins south to Colorado Springs, and the Albuquerque and Santa Fe areas of New Mexico. Portfolios spanning several of these markets are handled on one account with one contact.
Tell us about your building. We'll provide a detailed, line-item estimate.
“We manage 6 condo buildings in Boulder and Sonlight handles all of them. They show up when they say they will and their pricing is straightforward.”
“They cleaned our 3-story office building exterior windows without any disruption to our tenants. Great communication throughout.”
“Sonlight has handled our HOA’s annual window cleaning for 8 years running. They coordinate directly with unit owners and handle everything. Best vendor we work with.”
Yes. We carry full general liability ($2M aggregate) and workers’ comp. We provide Certificates of Insurance (COI) for every commercial project on request.
Absolutely. We schedule around your tenants and operations, early mornings, evenings, and weekends are all available.
Our team is trained in rope descent systems and bosun chair work. For buildings with certified roof anchors we use those. Below roughly six storeys we generally reach the glass from the ground with water-fed poles, which is faster and cheaper, and where footing is obstructed we bring a lift. Tell us the building at bid stage and we will tell you which access method it needs and what that does to the price.
Yes. We offer monthly, quarterly, semi-annual, and annual programs with locked-in pricing. We handle all the scheduling and reminders. You don’t have to chase us.
Commercial pricing depends on the number of windows, building height, access method, and frequency. We provide free, detailed line-item bids. Most office buildings range from $500–$5,000+ per visit.
We offer net-30 invoicing for commercial accounts. We accept checks, ACH, and credit cards. Multi-property accounts get consolidated monthly statements.
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