Riverside County Improvement Security, Permit Deposits and Fees for Unincorporated Projects

Article XVII of Ordinance No. 460, the County's subdivision ordinance, requires an improvement agreement and security when improvements are not complete before the final or parcel map is approved. Accepted forms are a corporate surety bond, cash, an instrument of credit or an irrevocable letter of credit payable on demand of the Director of Transportation. Bonds are to be substantially in the form the Subdivision Map Act provides.

The posted ordinance sets three layers of security. Faithful performance is 100 percent of the total estimated cost of the improvement. Labor and materials is 50 percent, securing payment to the contractor, subcontractors and suppliers. A guarantee and warranty of the work for one year after completion and acceptance is 10 percent. Attorney's fees and costs are added on top of the face amounts.

The estimate itself has a local wrinkle. Bond estimates use the Transportation Department's annual unit costs, and when improvement plans are not approved and signed before the map is approved, the ordinance adds a 20 percent contingency to the security amount. A developer recording a map ahead of signed plans should expect a larger bond than the engineer's estimate alone suggests.

Who signs depends on the map. For Schedule A through E maps, the major subdivisions, agreements are executed for the County by the Chairman of the Board after the Director of Transportation checks them. For Schedule F through I maps, the Director of Transportation executes them on Board-approved forms.

The copy the County posts is labeled as amended through Ordinance No. 460.152, effective Aug. 14, 2014. Later amendments may have changed Article XVII, so confirm the current requirement with the Transportation Department before relying on these figures.

Under the posted ordinance, the original period of the agreement and security is 24 months. The Director of Transportation may extend it up to one year at a time and may require additional security with an extension, which matters to a surety that priced the original term.

Reductions follow progress. Once one third of the bonded work is complete, the developer may request a partial release, with a maximum of three partial releases before full release on completion and acceptance. Any partial release reflects only the percentage of construction work completed. The Director of Transportation is authorized to release or reduce the security.

Labor and materials security is released after the lien-recording period and acceptance, reduced to the total of recorded lien claims or released in full if there are none. Release of the performance security does not release the warranty security, which runs its own one-year period. Where another agency must approve the work, the County holds the security until that agency is satisfied, and that agency has two months to respond before approval is deemed given.

Surety liability under the posted ordinance extends to changes and alterations that do not exceed 10 percent of the original estimated cost. Larger redesigns can call for a bond rider or new security, so tell the surety early when the scope moves.

Survey monuments must be set before recordation or secured. Section 9.10 of the posted ordinance lets the land divider execute a secured agreement or cash bond guaranteeing the setting of the monuments upon approval by the County Surveyor. There is no separate monument percentage, but the small-item rule applies: if the estimated cost of an item such as setting the monuments is less than $5,000, a cash bond is required rather than a surety bond.

A lien agreement can stand in for bonds only where the County finds it is not in the public interest to install improvements sooner than two years. It is not available once lots are sold, permits are issued or construction has begun, so most active projects should plan on surety bonds, cash or a letter of credit.

Work in County highways falls under Ordinance No. 499. Its security is discretionary, with no fixed amount: the Transportation Director may require a surety bond or deposit of money as necessary to secure performance, including restoration of pavement, ground surfaces and subsurfaces and any survey monuments or other improvements that may have been disturbed. For tree permits, the Director may require a bond, insurance or other security to protect person and property.

The Transportation Department's Riverside office application asks the applicant to comply with Ordinance No. 499, to give 48 hours' written notice before work starts and to indemnify, defend and save the County harmless. The staff-use block has a Security Deposit line with no amount printed. Neither the ordinance text nor the form states insurance limits or additional insured wording, so ask the Transportation Department for its current certificate requirements before bidding the work.

The posted copy of Ordinance No. 499 is labeled as amended through 499.13, effective in 2012. Board minutes from December 2023 reference a later amendment. Treat the posted text as possibly outdated and confirm the current version with the County.

The Riverside County Flood Control and Water Conservation District runs its own encroachment permit when work touches District facilities, such as a storm drain connection, a utility crossing or a channel. Its 2023 application packet lists a non-refundable $500 filing fee for most permits, an initial deposit of $2,000 for storm drain connections and utility crossings and an initial deposit of $3,000, including the filing fee, for major construction.

Add-ons can exceed the base deposit. The packet calls for an additional $10,000 deposit for each license agreement or easement, $5,000 if floodplain management review is required and an extra deposit if survey monuments are in the work area. If the balance drops under 25 percent of the original deposit, more is required. Unused funds are refunded within 60 days of acceptance.

Projects disturbing 1 acre or more must show Construction General Permit coverage, and the packet notes that initial comments typically take about 30 working days. The extracted packet states no insurance limits, so confirm any certificate the District requests at application.

In western Riverside County, the Multiple Species Habitat Conservation Plan adds a per-acre or per-unit cost line. The Western Riverside County Regional Conservation Authority, the regional joint powers authority that administers the plan, publishes a fee schedule effective July 1, 2026, to June 30, 2027: $20,846 per acre for commercial and industrial development, $4,632 per unit for residential under 8 units per acre, $1,931 per unit at 8 to 14 units per acre and $854 per unit above 14. On a large warehouse pad the commercial rate is a significant early cost, and habitat conservation conditions can affect schedule and environmental exposure.

The County's Development Impact Fee ordinance, Ordinance No. 659, adds timing rules. Fees cannot be deferred beyond final inspection or issuance, and commercial and industrial fees are paid in their entirety for the project area rather than prorated. A developer who builds eligible facilities may receive a credit under a credit agreement approved by the Board of Supervisors. Whether that agreement calls for added performance security should be confirmed with the County. The posted copy is amended through 659.9 and its fee tables may be outdated, so this page does not quote DIF amounts.