There is no single answer that works for every house in Houston. What actually drives the schedule is four things: tree cover, sprinkler spray, whether you're near construction, and how close you are to a coast.
The short version
For a standard Houston home without unusual factors, twice a year is the right cadence — once in early spring after the pollen drop, and once in fall before the holidays. That's the schedule our own crews keep on their own houses.
When twice a year isn't enough
- Sprinklers hitting any part of your glass — every spray leaves calcium spots that etch in weeks
- Construction within a block — drywall dust carries further than you think
- Homes under oaks or pecans — sap and pollen compound faster
- Coastal-adjacent homes (Clear Lake, League City) — salt film doesn't rinse off with rain
What to look for between cleans
The signal most people miss: when the inside of the glass is noticeably cloudier than the outside. That's kitchen grease, candle soot, or HVAC film — not dirt — and it builds up on a different timeline than the outside.
If you're running sprinklers or on a golf course lot, ask about hard-water treatment at your next clean. Regular soap doesn't touch calcium buildup — you need an acid-based remover, which we carry.
