DevFeeFinder
DrainageSet by city fee ordinance

General City DIF - Storm Drainage Regional

Levied by City of Ontario on new development in Ontario. Authorized under the Mitigation Fee Act - Gov. Code Sec. 66000 et seq. Collected at building permit.

What one house pays

$350

For a typical home: a 2,000 sq ft detached house on a 0.13 acre lot, on a new subdivision lot — this fee varies by the row that applies, so see the full schedule below.

Share of Ontario's total
1%
Total one-time fees here
$56,975
Adjustment
Adjusts only when the board sets a new amount
what the document says

by resolution of the City Council; no interim escalator - Res. No. 2025-010 adopts two dated schedules and names no index

The record

Why it exists

“The Purpose of the Fee. The costs of extending the same level of storm drainage protection to the newly developing residences and businesses as is provided to the existing community (that has largely paid for the existing system) can be calculated, a fee imposed and collected. The Fee revenues can then be used to expand the storm drainage facilities necessary to extend that same level of services.”

Development Impact Fee Calculation and Nexus Report, July 15 2022, Chapter 6 Storm Drainage Collection System Facilities, "The Purpose of the Fee", printed page 77 / PDF page 82 · source document ↗
What it pays for

“General City Regional Projects / Storm Drain — SD-069 Storm Drain Maintenance Vehicles $260,175 / SD-074 San Savaine Channel $1,875,549 / SD-075 Storm Drain Master Plan Update $217,660 / SD-103 Share of Common City Yard Improvements $782,254 / Regional Storm Drain Total $3,135,638 5% / Total All GC Storm Drain $68,710,652 / Local Adjacent Storm Drain $65,575,014 95%”

Development Impact Fee Calculation and Nexus Report, July 15 2022, Appendix D "GC – Regional Storm Drainage System Projects Identification", printed page 193 / PDF page 198 · source document ↗
Where it applies

“4316 Old Model Colony - Regional Storm Drains Impact Accounts for revenues from developer-paid impact fees for the construction of storm drain infrastructure projects that serve a larger, regional area in the Old Model Colony (OMC) or General City.”

AB 1600 Development Impact Fee Annual Report, FY ended June 30 2025, "Development Impact Fee (DIF) Fund Number, Description, and Schedule", printed page 6 / PDF page 8 · source document ↗
When it was adopted

2003-07-01

“On July 1, 2003, the City Council adopted Ordinance Nos. 2779 and 2780 approving the collection of Development Impact Fees (DIF) in the City of Ontario to mitigate the impacts of future development. In accordance with the provisions of Ordinance Nos. 2779 and 2780, the City began collecting DIF on September 1, 2003.”

AB 1600 Development Impact Fee Annual Report (Unaudited), For Fiscal Year Ended June 30, 2025, "AB 1600 Development Impact Fee Annual Report – Introduction", printed page 1 · source document ↗
Who adopted it

Ordinance Nos. 2779 and 2780

“On July 1, 2003, the City Council adopted Ordinance Nos. 2779 and 2780 approving the collection of Development Impact Fees (DIF) in the City of Ontario to mitigate the impacts of future development. In accordance with the provisions of Ordinance Nos. 2779 and 2780, the City began collecting DIF on September 1, 2003.”

AB 1600 Development Impact Fee Annual Report (Unaudited), For Fiscal Year Ended June 30, 2025, "AB 1600 Development Impact Fee Annual Report – Introduction", printed page 1 · source document ↗
When it is paid

at building permit

“GENERAL CITY (GC) DEVELOPMENT IMPACT FEES EFFECTIVE 07/01/2026 / COLLECTED AT BUILDING PERMIT ($)”

General City (GC) Development Impact Fees Effective as of July 1, 2026, sheet header · source document ↗
Who collects it

City of Ontario, the agency that levies it

“The City of Ontario assesses certain Development Impact Fees (DIF) upon new development projects to recover the costs to the City for the future construction of public infrastructure, facilities, and improvements necessitated by increased development. DIF are collected at Building Permit issuance to ensure the City collects sufficient monies to construct the additional infrastructure needed to accommodate the growth of new residents and businesses.”

City of Ontario, Development Impact Fees page, body text · source document ↗
Credits and offsets

“From time to time the City may require an applicant of a private project to construct an improvement (or portion thereof) that is on the list of required improvements at the end of this Chapter. This is often done to expedite the project for the applicant/developer. The developer should receive a credit for any money expended on this required improvement against their calculated storm drainage impact fee.”

Development Impact Fee Calculation and Nexus Report, July 15 2022, Chapter 6, following Table 6-2, printed page 79 / PDF page 84 · source document ↗
How it changes

“SECTION 5. This Resolution, including the updated fee amounts contained in "Exhibit A" and "Exhibit B" attached hereto and incorporated herein, shall be effective for all new development projects occurring in the City, when applicable, sixty (60) days following its adoption.”

Resolution No. 2025-010, adopted March 18 2025, Section 5, page 3 of 5 · source document ↗

Every published rate

Land useApplies toBasisEffectiveAmount
General City
Single-family detached detached dwellingthis home per DU 1 Jul 2026 $350.00

“General City – Maximum Regional Storm Drainage Facilities Development Impact Fees by Land Use — Proposed Land Use | Fee Per Unit or S.F. | Fee Per Acre (NOTE) ... Detached Dwellings | $ 350/Unit | -”

Resolution No. 2025-010, adopted March 18 2025, "EXHIBIT B" — City of Ontario Development Impact Fee Schedule 07.01.26, PDF page 19 · source document ↗
Mobile home Mobile Home Dwellings per DU — $204.00
the line this rate was read from

“General City – Maximum Regional Storm Drainage Facilities Development Impact Fees by Land Use ... Mobile Home Dwellings | $ 204/Unit | -”

the levying document · source document ↗
Single-family attached Attached Dwellings per DU — $113.00
the line this rate was read from

“General City – Maximum Regional Storm Drainage Facilities Development Impact Fees by Land Use ... Attached Dwellings | $ 113/Unit | -”

the levying document · source document ↗
Multi-family High Density Dwellings per DU — $95.00
the line this rate was read from

“General City – Maximum Regional Storm Drainage Facilities Development Impact Fees by Land Use ... High Density Dwellings | $ 95/Unit | -”

the levying document · source document ↗

About these figures

Quoted, not summarized. Every amount and fact on this page is copied from the official document it links to. If we couldn’t find something in a document, we leave it blank instead of guessing.

Before any discounts. Some fees offer credits, waivers or phase-ins. They’re listed above but not subtracted, because whether you qualify depends on your project.

Check the date. Fees change. This page shows what was in force on the date at the top, with a link to the document that set it, so you can confirm the current amount yourself. How all of this is put together.

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