Commercial landscape maintenance in Castle Rock.

Castle Rock is the highest of the ten cities we serve, at roughly 6,200 feet, and it has the most distinctive water rules of any of them — in both directions. The restriction is the tightest. So is the incentive, and the incentive is by far the best.

The commercial rule: midnight to 8 a.m.

Castle Rock Water enforces a mandatory watering schedule from May 1 through September 30. This is a standing rule, not a drought measure — it applies whether or not there's a drought declared.

For non-residential accounts, it reads:

• Three days per week, between 12 a.m. and 8 a.m. Midnight to 8 a.m. Eight hours, three nights.
• West of I-25: Monday, Wednesday, Friday.
• East of I-25: Tuesday, Thursday, Saturday.

That is materially more restrictive than the residential rule, and it's the tightest commercial window in the metro. Everyone else on our service list gives you an evening-through-morning window; Castle Rock gives commercial properties the small hours only.

Separately — and don't let anyone conflate these — Castle Rock declared a Drought Stage 1: Advisory in May 2026. That is a voluntary request for a 10% reduction. It adds no mandatory restrictions beyond the standing schedule above. If a vendor tells you Castle Rock has "mandatory drought restrictions," they've merged two separate things and you should double-check whatever else they've told you.

Confirm current status with Castle Rock Water. This reflects what was published as of July 2026.

What an eight-hour night window demands

Three nights, eight hours each. Every zone on the property has to sequence and complete inside that.

The system has to be efficient, or it won't fit. A property with poor distribution uniformity has to run each zone long enough to satisfy its driest spot. Stack enough of those up and you run past 8 a.m. — which is a violation, and which also means you're watering into the morning sun and losing it to evaporation.

Pressure and nozzle matching stop being nice-to-haves. Misting heads waste a share of a very finite allotment.

Cycle and soak is harder to fit — and more necessary. Castle Rock's clay accepts water slowly. You need soak intervals for the water to infiltrate rather than sheet off. But soak intervals consume clock, and you only have eight hours. This is exactly the arithmetic that gets a property in trouble, and exactly why the audit comes first.

Leaks are brutal here. A stuck valve running at 3 a.m. on a property nobody visits until 8 is invisible. Run the meter test.

See Irrigation Management.

The best commercial money on the Front Range

Here's the other side of the coin, and it is genuinely the strongest incentive we've found anywhere in our service area.

Castle Rock Water's Nonresidential/HOA ColoradoScape Renovation rebate pays $3.25 per square foot for converting turf to low-water ColoradoScape landscape. For comparison, Denver Water's commercial turf-replacement rebate pays $0.50 per square foot. Castle Rock is paying more than six times as much.

The terms, as published:

• $3.25 per square foot for low-water ColoradoScape conversion, plus $1.00 per square foot for non-permeable hardscape.
• Minimum 1,500 square feet. Maximum 15,000 square feet of rebate area per account.
• Artificial turf does not qualify. Plant material is required, and the irrigation must be modified as part of the project.
• There's also a rotary-nozzle retrofit rebate up to $5 per nozzle, capped at $2,000 per account.
• Rebates of $600 or more are taxable — expect a W-9.

Confirm current terms and availability with Castle Rock Water before scoping. But if you manage commercial or HOA property in Castle Rock and you have nonfunctional turf sitting in a median, a parking island, or a setback strip, this is the single best water-economics play available on the Front Range, and you are leaving money on the table by not looking at it.

Castle Rock's commercial grounds

Castle Rock's commercial base runs from regional outlet and destination retail — big parking fields with a lot of island and median turf — to master-planned community and metro-district common area, suburban office and medical, and light industrial.

Two things about the site conditions matter for plant selection. First, at roughly 6,200 feet, Castle Rock is high enough that some species that perform in Denver are marginal here — buffalograss, for instance, gets problematic above about 6,500 feet, so you're near the edge but not over it. Second, big retail parking fields mean big de-icing salt exposure along the walk-adjacent strips and island edges. CSU Extension's guidance on that is blunt: in heavy salt-use areas, salt levels can rise above the tolerance of even the most salt-tolerant plants, and rock mulch without plants is often the better design solution. We'd rather tell you not to plant a strip than sell you plants that will die in it.

See Native Plants for Front Range Commercial Properties and Enhancements.

Snow is Frontier Snow Care.