DevFeeFinder
TransportationSet by county fee ordinanceCitation SJC Code 9-1203

Traffic Impact Mitigation Fee (TIMF)

Levied by San Joaquin County (Board of Supervisors) on new development in San Joaquin County (unincorporated). Authorized under the Mitigation Fee Act - Gov. Code Sec. 66000 et seq. Collected at building permit.

What one house pays

$1,880

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 zone, so see the full schedule below.

Share of San Joaquin County (unincorporated)'s total
7%
Total one-time fees here
$27,881
Adjustment
Adjusts yearly · ENR construction cost index · July
what the document says

ENR-CCI annual, in effect on July 1 of each year. The authorising clause (SJC Code s. 9-1203.2(b)) names the index and NO month; the July comes from the 2022 TIMF Update, which states that the published ENR May figure is applied in the first week of June for a July 1 effective date.

Next expected change
1 Jul 2027

The record

Why it exists

“The Traffic Impact Mitigation Fee (TIMF) is collected to finance transportation facilities needed to accommodate new or expanded development within the unincorporated areas of San Joaquin County. In January 1989, the Board of Supervisors adopted Ordinance 3452 establishing an infrastructure-financing program for the County TIMF.”

TIMF Program Annual Report FY ending 2025-06-30, November 2025, s. I PROGRAM BACKGROUND, printed p. 1 · source document ↗
What it pays for

“A Public Facilities Fee for Traffic Impact Mitigation is hereby established for new development in the unincorporated area of San Joaquin County to pay for public facilities to mitigate the impact related to the new developments, including but not limited to traffic signalization, roadway improvements, and bridge construction or reconstruction.”

San Joaquin County Ordinance Code Title 9, Division 12, Chapter 9-1203, s. 9-1203.2(a) PUBLIC FACILITIES FEES (Ord. 3675), printed p. 563 · source document ↗
Where it applies

“A Public Facilities Fee for Traffic Impact Mitigation is hereby established for new development in the unincorporated area of San Joaquin County”

SJC Ordinance Code Title 9 Div. 12, s. 9-1203.2(a) (Ord. 3675), printed p. 563 · source document ↗
When it was adopted

1990-02-20

“1. Resolution 90-304, adopted February 20, 1990, established the County TIMF program which applies to all new development, residential and commercial/industrial, within the Unincorporated Area of San Joaquin County. The Resolution became effective April 23, 1990.”

San Joaquin County Traffic Impact Mitigation Fee Program Annual Report, fiscal year ending June 30, 2025, prepared November 2025, s. I PROGRAM BACKGROUND, printed p. 1 · source document ↗
Who adopted it

Resolution 90-304

“1. Resolution 90-304, adopted February 20, 1990, established the County TIMF program which applies to all new development, residential and commercial/industrial, within the Unincorporated Area of San Joaquin County. The Resolution became effective April 23, 1990.”

San Joaquin County Traffic Impact Mitigation Fee Program Annual Report, fiscal year ending June 30, 2025, prepared November 2025, s. I PROGRAM BACKGROUND, printed p. 1 · source document ↗
When it is paid

at building permit

“(d) Payment of Fees. The fees to be collected under this Chapter shall be collected prior to the issuance of a building permit or approval of any discretionary permit if no building permit is required. The amount of fee to be paid will be the amount indicated in the Resolution, as augmented pursuant to Section 9-1203.2(c), at the time of actual tender of the fee.”

SJC Ordinance Code Title 9 Div. 12, s. 9-1203.2(d) (Ord. 3675), printed p. 564 · source document ↗
Who collects it

San Joaquin County Department of Public Works — same levying agency

“The fees to be collected under this Chapter shall be collected prior to the issuance of a building permit or approval of any discretionary permit if no building permit is required.”

SJC Ordinance Code Title 9 Div. 12, s. 9-1203.2(d) (Ord. 3675), printed p. 564 · source document ↗
Who is exempt

“d. Resolution 15-180, adopted December 8, 2015, introduced new language for Agricultural Exemptions to be applied to development having minimal impact on county roadways.”

TIMF Program Annual Report FY ending 2025-06-30, November 2025, s. I PROGRAM BACKGROUND item 2.d, printed p. 1 · source document ↗
Credits and offsets

“Whenever a developer is required, as a condition of approval of a development permit, to design and/or construct a public facility described in a Resolution adopted pursuant to Section 9-1203.2, which facility is determined by the County to have supplemental size, length, or capacity over that needed for the impacts of that development, and when such construction or equipment is necessary to ensure efficient and timely construction of the facilities network, a reimbursement agreement with the developer and a credit against the fee, which would otherwise be charged pursuant to this ordinance on the development project, may be offered.”

SJC Ordinance Code Title 9 Div. 12, s. 9-1203.4 DEVELOPER CONSTRUCTION OF FACILITIES (Ord. 3675), printed pp. 564-565 · source document ↗
How it changes

Adjusted annually by the ENR Construction Cost Index in effect on July 1.

“The TIMF schedule is adjusted annually to reflect market changes in the construction cost of similar projects. The Engineering News-Record Construction Cost Index, in effect on July 1 of each year, is used to adjust the TIMF rate. Table 1 reflects the updated fee schedule”

San Joaquin County Department of Public Works, "Traffic Impact Mitigation Fee Program Annual Report" for 2024, p. 9 Table 1 and the narrative above it. Downloaded 2026-09-10 and read with pdftotext -layout. · source document ↗

Every published rate

Land useApplies toBasisEffectiveAmount
1 Delta Thornton
Multi-family none per sq ft 1 Jul 2026 $1.63
the line this rate was read from

“Traffic Impact Mitigation Fee Schedule By Use Type | Effective July 1, 2026 | New fee at +2.4% || Area | Single Family (SF) | Multi-Family (SF) | Office (1KSF) | Retail Service (1KSF) | Warehouse (1KSF) | Service Comm. (1KSF) | Manufacturing (1KSF) || 1 Delta Thornton | 1.41 | 1.63 | 2,341.09 | 2,306.18 | 360.00 | 1,986.55 | 1,480.37”

San Joaquin County Department of Public Works, "Traffic Fees" page, "FEE SCHEDULE" section, table "Traffic Impact Mitigation Fee Schedule By Use Type / Effective July 1, 2026 / New fee at +2.4%". This page is the programme's own `link_schedule`; fetched 2026-09-21 (HTTP 200, 65,357 bytes, Chrome identity) and byte-identical to the copy already held in `sources`. · source document ↗
3 Escalon Linden Ripon
Multi-family none per sq ft 1 Jul 2026 $1.63
the line this rate was read from

“Traffic Impact Mitigation Fee Schedule By Use Type | Effective July 1, 2026 | New fee at +2.4% || Area | Single Family (SF) | Multi-Family (SF) | Office (1KSF) | Retail Service (1KSF) | Warehouse (1KSF) | Service Comm. (1KSF) | Manufacturing (1KSF) || 3 Escalon Linden Ripon | 1.41 | 1.63 | 2,341.09 | 2,306.18 | 360.00 | 1,986.55 | 1,480.37”

San Joaquin County Department of Public Works, "Traffic Fees" page, "FEE SCHEDULE" section, table "Traffic Impact Mitigation Fee Schedule By Use Type / Effective July 1, 2026 / New fee at +2.4%". This page is the programme's own `link_schedule`; fetched 2026-09-21 (HTTP 200, 65,357 bytes, Chrome identity) and byte-identical to the copy already held in `sources`. · source document ↗
Zones 1 & 3 (Delta-Thornton; Escalon-Linden-Ripon)
Single-family detached per sq ft 1 Jul 2026 $1.41
the line this rate was read from

“Traffic Impact Mitigation Fee Schedule By Use Type | Effective July 1, 2026 | New fee at +2.4% || Area | Single Family (SF) | Multi-Family (SF) | Office (1KSF) | Retail Service (1KSF) | Warehouse (1KSF) | Service Comm. (1KSF) | Manufacturing (1KSF) || 1 Delta Thornton | 1.41 | 1.63 | 2,341.09 | 2,306.18 | 360.00 | 1,986.55 | 1,480.37 || 3 Escalon Linden Ripon | 1.41 | 1.63 | 2,341.09 | 2,306.18 | 360.00 | 1,986.55 | 1,480.37”

San Joaquin County Department of Public Works, "Traffic Fees" page, "FEE SCHEDULE" section, table "Traffic Impact Mitigation Fee Schedule By Use Type / Effective July 1, 2026 / New fee at +2.4%". This page is the programme's own `link_schedule`; fetched 2026-09-21 (HTTP 200, 65,357 bytes, Chrome identity) and byte-identical to the copy already held in `sources`. · source document ↗
2 Lockeford Lodi Stockton
Multi-family none per sq ft 1 Jul 2026 $1.09
the line this rate was read from

“Traffic Impact Mitigation Fee Schedule By Use Type | Effective July 1, 2026 | New fee at +2.4% || Area | Single Family (SF) | Multi-Family (SF) | Office (1KSF) | Retail Service (1KSF) | Warehouse (1KSF) | Service Comm. (1KSF) | Manufacturing (1KSF) || 2 Lockeford Lodi Stockton | 0.94 | 1.09 | 1,562.18 | 1,539.28 | 240.01 | 1,325.46 | 988.36”

San Joaquin County Department of Public Works, "Traffic Fees" page, "FEE SCHEDULE" section, table "Traffic Impact Mitigation Fee Schedule By Use Type / Effective July 1, 2026 / New fee at +2.4%". This page is the programme's own `link_schedule`; fetched 2026-09-21 (HTTP 200, 65,357 bytes, Chrome identity) and byte-identical to the copy already held in `sources`. · source document ↗
4 Lathrop Manteca Tracy
Multi-family none per sq ft 1 Jul 2026 $1.09
the line this rate was read from

“Traffic Impact Mitigation Fee Schedule By Use Type | Effective July 1, 2026 | New fee at +2.4% || Area | Single Family (SF) | Multi-Family (SF) | Office (1KSF) | Retail Service (1KSF) | Warehouse (1KSF) | Service Comm. (1KSF) | Manufacturing (1KSF) || 4 Lathrop Manteca Tracy | 0.94 | 1.09 | 1,562.18 | 1,539.28 | 240.01 | 1,325.46 | 988.36”

San Joaquin County Department of Public Works, "Traffic Fees" page, "FEE SCHEDULE" section, table "Traffic Impact Mitigation Fee Schedule By Use Type / Effective July 1, 2026 / New fee at +2.4%". This page is the programme's own `link_schedule`; fetched 2026-09-21 (HTTP 200, 65,357 bytes, Chrome identity) and byte-identical to the copy already held in `sources`. · source document ↗
Zone 4 (Lathrop-Manteca-Tracy) and Zone 2 (Lockeford-Lodi-Stockton)
Single-family detached this home per sq ft 1 Jul 2026 $0.94

“Traffic Impact Mitigation Fee Schedule By Use Type | Effective July 1, 2026 | New fee at +2.4% || Area | Single Family (SF) | Multi-Family (SF) | Office (1KSF) | Retail Service (1KSF) | Warehouse (1KSF) | Service Comm. (1KSF) | Manufacturing (1KSF) || 2 Lockeford Lodi Stockton | 0.94 | 1.09 | 1,562.18 | 1,539.28 | 240.01 | 1,325.46 | 988.36 || 4 Lathrop Manteca Tracy | 0.94 | 1.09 | 1,562.18 | 1,539.28 | 240.01 | 1,325.46 | 988.36”

San Joaquin County Department of Public Works, "Traffic Fees" page, "FEE SCHEDULE" section, table "Traffic Impact Mitigation Fee Schedule By Use Type / Effective July 1, 2026 / New fee at +2.4%". This page is the programme's own `link_schedule`; fetched 2026-09-21 (HTTP 200, 65,357 bytes, Chrome identity) and byte-identical to the copy already held in `sources`. · 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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