Why does the City of Rocklin have a limit on impermeable surfaces in front yards?

Limiting impermeable coverage helps prevent excessive vehicle parking on private property as parking is only allowed on impermeable surfaces in the City of Rocklin. It also serves to ensure minimal pervious areas are maintained on each property to aid with storm water management and absorption to recharge groundwater reserves.

What surfaces, in addition to concrete, are considered “impermeable?”

Impermeable surfaces are solid surfaces that do not allow water absorption into the soil. Examples include concrete, asphalt, and stone, brick, pavers, patio blocks, etc. set in concrete grout (or equivalent).

What if I have loose rocks in my landscaping?

Areas covered in loose rock are permeable and would not be calculated into the 60% of land allowed for impermeable surface coverage in front yard and front side yard setback areas.

What about pavers and patio blocks? Are they considered impermeable?

Non-grouted stone, pavers, patio blocks, strip or “Hollywood Driveways,” and crushed aggregate are considered to be permeable.

Does this rule affect my back yard, too?

No, the concrete coverage rule only applies to residential front yard setback and, on corner lots, the street side yard setback areas on lots over 5,000 square feet in area.

What happens if I already have more than 60% of my yard covered?

Residential concrete projects installed prior to the new coverage rules taking effect on July 7, 2019, would be exempt.

What if I am currently in the process of renovation?

The concrete coverage ordinance went into effect July 7, 2019. Plans to cover more than 60% of a residential front yard and front side yard setback area with impermeable surfaces must adhere to the ordinance.