Martin County impact fees by project type
Where in Martin County are you building?
Each jurisdiction applies its own fee schedule. Pick yours. = one or more fees are unconfirmed or have no published amount; the figure shown may not be the complete cost.
Unincorporated Martin County: Single-Family Impact Fees
A new single-family home in unincorporated Martin County pays $17,580.39 per unit in impact fees (rates sourced July 14, 2026). All of it is levied by Martin County.
The largest line items are County Impact Fee (Martin County) ($8,203.00), Sewer Capital Facility Charge (Martin County Utilities) ($2,100.00) and Water Capital Facility Charge (Martin County Utilities) ($1,710.00).
School Impact Fee (Martin County School District) is shown at the last published amount but has not been confirmed with the jurisdiction; it is included in the totals here. Verify before budgeting.
Some fees are tiered by unit size or building type; amounts reflect the representative tier noted in the schedule below.
View the full fee schedule
- Water Capital Facility Charge (Martin County Utilities)$1,710.00Martin County Utilities and Solid WasteCONFIRMED (re-verified 7/12/2026). Martin County Utilities Rates, Table 12 — Capital Facility and Distribution Line Charges, effective June 1, 2025 (still the current posted schedule). Single Family & Commercial per ERC = $1,710. SFR = 1.0 ERC. MCU is a regional utility serving unincorporated Martin County, the Town of Sewall's Point, and Ocean Breeze. North River Shores Area V adds a $560/ERC distribution line charge; other areas at cost.
- Sewer Capital Facility Charge (Martin County Utilities)$2,100.00Martin County Utilities and Solid WasteCONFIRMED (re-verified 7/12/2026). Martin County Utilities Rates, Table 12 — Capital Facility and Distribution Line Charges, effective June 1, 2025 (still the current posted schedule). Single Family & Commercial per ERC = $2,100. SFR = 1.0 ERC. MCU serves unincorporated Martin County, Sewall's Point, and Ocean Breeze.
- City Impact Fee (Martin County - Unincorporated)$0.00CONFIRMED $0 — Martin County Unincorporated is not an incorporated municipality and has no city government; no city-level impact fees apply. County-level fees are captured on the County records.
- County Impact Fee (Martin County)$8,203.00Martin County Board of County CommissionersCONFIRMED (re-verified 7/12/2026) against LDR Art. 6 Exhibit B, Figure 6.1, Table 1 (Residential), effective 1/1/2026. ITE LUC 210 Single Family, 1,101-2,300 sq ft = $8,203/du (Transportation $3,519 + Public Buildings $547 + Correctional/Law Enf $944 + Fire Rescue $708 + Parks & Rec $1,674 + Conservation/Open Space $170 + Library $520 + 1.5% admin $121). Other tiers: <=800 sf $4,421; 801-1,100 sf $5,790; >2,300 sf $11,443. Phase-in: 1/1/2027 = $8,654; 1/1/2028 = $9,103. Applies to UNINCORPORATED Martin County.
- School Impact Fee (Martin County School District)$5,567.39Requires confirmationMartin County School DistrictAmount matches the schedule the county currently posts, but the schedule is old. Re-verified 7/12/2026: the only school impact fee schedule published by Martin County is still 'School Impact Fee Schedule, Effective October 1, 2008'. Tiers by dwelling unit size: <=800 sf $3,609.37; 801-1,100 sf $5,355.08; 1,101-2,300 sf $5,567.39 (entered); 2,301+ sf $5,756.12. UNCONFIRMED: whether the 2008 rate is still the operative adopted rate (18 years old) and whether it is collected countywide including inside municipalities. Contact: Martin County School Board (772) 219-1200 x30272.
Where in Martin County are you building?
Each jurisdiction applies its own fee schedule. Pick yours. = one or more fees are unconfirmed or have no published amount; the figure shown may not be the complete cost.
Unincorporated Martin County: Multifamily Impact Fees
A new multifamily unit in unincorporated Martin County pays $12,569.08 per unit in impact fees (rates sourced July 14, 2026). All of it is levied by Martin County.
The largest line items are County Impact Fee (Martin County, MF) ($5,309.00), Sewer Capital Facility Charge (Martin County Utilities, MF) ($1,050.00) and Water Capital Facility Charge (Martin County Utilities, MF) ($855.00).
School Impact Fee (Martin County School District, MF) is shown at the last published amount but has not been confirmed with the jurisdiction; it is included in the totals here. Verify before budgeting.
Some fees are tiered by unit size or building type; amounts reflect the representative tier noted in the schedule below.
View the full fee schedule
- Water Capital Facility Charge (Martin County Utilities, MF)$855.00Martin County Utilities and Solid WasteCONFIRMED per-unit (re-verified 7/12/2026). Martin County Utilities Rates, Table 12, eff. June 1, 2025. Table 12 gives an explicit MF per-unit rate — 'Multi-Family, One meter two units / Per Unit' AND 'Multi-Family, Master Meter / 3 or more units in one building' are BOTH $855.00 per unit (= 0.5 x the $1,710 SFR ERC rate). The per-unit basis is published, so no ERC-factor assumption is needed. MCU serves unincorporated Martin County, Sewall's Point, and Ocean Breeze.
- Sewer Capital Facility Charge (Martin County Utilities, MF)$1,050.00Martin County Utilities and Solid WasteCONFIRMED per-unit (re-verified 7/12/2026). Martin County Utilities Rates, Table 12, eff. June 1, 2025. Both MF configurations — 'One meter, two units / Per Unit' and 'Master Meter / 3 or more units in one building' — are $1,050.00 per unit (= 0.5 x the $2,100 SFR ERC rate). Per-unit basis is published; no ERC-factor assumption needed.
- City Impact Fee (Martin County - Unincorporated, MF)$0.00CONFIRMED $0 — Martin County Unincorporated is not an incorporated municipality and has no city government; no city-level impact fees apply. County-level fees are captured on the County records.
- School Impact Fee (Martin County School District, MF)$5,355.08Requires confirmationMartin County School DistrictPriced off $0 on 7/12/2026. The posted 'School Impact Fee Schedule, Effective October 1, 2008' brackets by DWELLING UNIT SIZE, not by housing type — it is not an SFR-only schedule, so multifamily units fall on the same table. The canonical MF unit (2BR/2BA, 1,000 sq ft) falls in the 801-1,100 sq ft tier = $5,355.08 (entered). Other tiers: <=800 sf $3,609.37; 1,101-2,300 sf $5,567.39; 2,301+ sf $5,756.12. UNCONFIRMED: (a) currency of the 2008 rate, (b) that MF is in fact assessed off this size table rather than a separate MF rate. Martin County School Board (772) 219-1200 x30272.
- County Impact Fee (Martin County, MF)$5,309.00Martin County Board of County CommissionersCONFIRMED (re-verified 7/12/2026) against LDR Art. 6 Exhibit B, Figure 6.1, Table 1 (Residential), eff. 1/1/2026. ITE LUC 220/221 Multi-Family = $5,309/du flat, all MF types regardless of unit size or building height (Transportation $2,836 + Public Buildings $340 + Correctional/Law Enf $330 + Fire Rescue $260 + Parks & Rec $1,038 + Conservation/Open Space $105 + Library $322 + 1.5% admin $78). Phase-in: 1/1/2027 $5,658/du; 1/1/2028 $6,004/du. Applies to UNINCORPORATED Martin County only. No unit-size tiering for MF, so a single default record is correct.
Where in Martin County are you building?
Each jurisdiction applies its own fee schedule. Pick yours. Totals shown are for a 50,000 sq ft building, including one-time water/sewer fees (assuming a 1-inch meter). = one or more fees are unconfirmed or have no published amount; the figure shown may not be the complete cost.
Unincorporated Martin County: Commercial Impact Fees
Commercial development in unincorporated Martin County pays $8.02 per square foot in impact fees, plus $3,810.00 in one-time water and sewer connection fees (rates sourced July 14, 2026).
For a 50,000 sq ft building, that comes to about $405,010.00. The calculator below adjusts to your exact square footage.
The largest line items are Sewer Capital Facility Charge (Martin County Utilities) — 1 ERC ($2,100.00 one-time), Water Capital Facility Charge (Martin County Utilities) — 1 ERC ($1,710.00 one-time) and County Impact Fee (Martin County, Commercial) ($8.02/sq ft).
View the full fee schedule
- Water Capital Facility Charge (Martin County Utilities) — 1 ERC$1,710.00 one-timeMartin County Utilities and Solid WasteMartin County Utilities rate schedule, eff. 6/1/2025, Table 12 (Capital Facility and Distribution Line Charges): 'Single Family & Commercial per ERC' = $1,710.00 water. NONRES ERC BASIS CONFIRMED ON AUDIT 2026-07-14: Martin County LDR Art. 4, Div. 6, Subd. 1, Sec. 4.181 (Definitions) — 'For nonresidential use ... one equivalent residential connection shall equal 250 gallons per day.' ERC = factor converting average daily flow (ADF) to equivalent units; nonres ERC count = ADF / 250 gpd. The published 1-ERC charge is entered as the default. MCU publishes NO meter-size ladder for the capital facility charge — the per-ERC figure IS the whole fee; the meter/lateral connection charges (Table 10) are separate and additive. The $/ERC figure is shared across customer classes (single-family and commercial identical) — shared-ladder precedent, NOT residential contamination. Distribution line charge is separate, at cost, waived where the developer installs the lines. Resolves the prior 'multiplier unconfirmed' flag.
- Sewer Capital Facility Charge (Martin County Utilities) — 1 ERC$2,100.00 one-timeMartin County Utilities and Solid WasteMartin County Utilities rate schedule, eff. 6/1/2025, Table 12 (Capital Facility and Distribution Line Charges): 'Single Family & Commercial per ERC' = $2,100.00 sewer. NONRES ERC BASIS CONFIRMED ON AUDIT 2026-07-14: Martin County LDR Art. 4, Div. 7, Subd. 1, Sec. 4.262 (Definitions) — 'For nonresidential units, one equivalent residential connection shall equal 250 gallons per day (250 gpd).' Nonres ERC count = average daily flow / 250 gpd; the published 1-ERC charge is entered as the default. MCU publishes NO meter-size ladder for the sewer capital facility charge — the per-ERC figure IS the whole fee. Shared $/ERC across customer classes (single-family and commercial identical) — shared-ladder precedent, NOT residential contamination. Industrial waste charge (Table 14, $46.84 per 1,000 gal of contracted capacity) is a recurring charge, not a capital fee. Resolves the prior 'multiplier unconfirmed' flag.
- City Impact Fee (Martin County - Unincorporated, Commercial)$0.00N/A — unincorporated area$0 CONFIRMED — unincorporated Martin County is not an incorporated municipality and has no city government, so no city-level impact fee can apply. All development impact fees in the unincorporated area are county fees (Martin County LDR Art. 6) and are captured on the County records.
- County Impact Fee (Martin County, Commercial)$8.02/sq ftMartin County Board of County CommissionersMartin County LDR Art. 6 (Ord. No. 562), Exhibit B, Figure 6.1, Table 7 (Retail), effective 1/1/2026. Schedule row: ITE 821 Retail/Shopping Center (40,000-150,000 sfgla) = $8,024 per 1,000 sfgla — the tier containing the canonical 50,000 sq ft. BASIS IS GLA (sfgla), NOT GFA. Components: Transportation $6,149 + Public Buildings $689 + Correctional/Law Enf $668 + Fire Rescue $399 + 1.5% admin $119. Other tiers: ITE 822 (<40,000 sfgla) $5,659; ITE 820 (>150,000 sfgla) $8,300. PHASE-IN: 1/1/2027 = $8,826; 1/1/2028 = $9,626 — re-read each 1/1. County nonres schedule has NO Parks, Conservation/Open Space or Library columns (residential-only components); school impact fees are per dwelling unit and do not reach nonres.
Where in Martin County are you building?
Each jurisdiction applies its own fee schedule. Pick yours. Totals shown are for a 50,000 sq ft building, including one-time water/sewer fees (assuming a 1-inch meter). = one or more fees are unconfirmed or have no published amount; the figure shown may not be the complete cost.
Unincorporated Martin County: Industrial Impact Fees
Industrial development in unincorporated Martin County pays $2.70 per square foot in impact fees, plus $3,810.00 in one-time water and sewer connection fees (rates sourced July 14, 2026).
For a 50,000 sq ft building, that comes to about $138,710.00. The calculator below adjusts to your exact square footage.
The largest line items are Sewer Capital Facility Charge (Martin County Utilities) — 1 ERC ($2,100.00 one-time), Water Capital Facility Charge (Martin County Utilities) — 1 ERC ($1,710.00 one-time) and County Impact Fee (Martin County, Industrial) ($2.70/sq ft).
View the full fee schedule
- Water Capital Facility Charge (Martin County Utilities) — 1 ERC$1,710.00 one-timeMartin County Utilities and Solid WasteMartin County Utilities rate schedule, eff. 6/1/2025, Table 12 (Capital Facility and Distribution Line Charges): 'Single Family & Commercial per ERC' = $1,710.00 water. NONRES ERC BASIS CONFIRMED ON AUDIT 2026-07-14: Martin County LDR Art. 4, Div. 6, Subd. 1, Sec. 4.181 (Definitions) — 'For nonresidential use ... one equivalent residential connection shall equal 250 gallons per day.' ERC = factor converting average daily flow (ADF) to equivalent units; nonres ERC count = ADF / 250 gpd. The published 1-ERC charge is entered as the default. MCU publishes NO meter-size ladder for the capital facility charge — the per-ERC figure IS the whole fee; the meter/lateral connection charges (Table 10) are separate and additive. The $/ERC figure is shared across customer classes (single-family and commercial identical) — shared-ladder precedent, NOT residential contamination. Distribution line charge is separate, at cost, waived where the developer installs the lines. Resolves the prior 'multiplier unconfirmed' flag.
- Sewer Capital Facility Charge (Martin County Utilities) — 1 ERC$2,100.00 one-timeMartin County Utilities and Solid WasteMartin County Utilities rate schedule, eff. 6/1/2025, Table 12 (Capital Facility and Distribution Line Charges): 'Single Family & Commercial per ERC' = $2,100.00 sewer. NONRES ERC BASIS CONFIRMED ON AUDIT 2026-07-14: Martin County LDR Art. 4, Div. 7, Subd. 1, Sec. 4.262 (Definitions) — 'For nonresidential units, one equivalent residential connection shall equal 250 gallons per day (250 gpd).' Nonres ERC count = average daily flow / 250 gpd; the published 1-ERC charge is entered as the default. MCU publishes NO meter-size ladder for the sewer capital facility charge — the per-ERC figure IS the whole fee. Shared $/ERC across customer classes (single-family and commercial identical) — shared-ladder precedent, NOT residential contamination. Industrial waste charge (Table 14, $46.84 per 1,000 gal of contracted capacity) is a recurring charge, not a capital fee. Resolves the prior 'multiplier unconfirmed' flag.
- City Impact Fee (Martin County - Unincorporated, Industrial)$0.00N/A — unincorporated area$0 CONFIRMED — unincorporated Martin County has no city government, so no city-level impact fee applies. All development impact fees here are county fees (LDR Art. 6) — see County records.
- County Impact Fee (Martin County, Industrial)$2.70/sq ftMartin County Board of County CommissionersMartin County LDR Art. 6 (Ord. No. 562), Exhibit B, Figure 6.1, Table 9 (Industrial), effective 1/1/2026. Schedule row: ITE 110 General Industrial = $2,698 per 1,000 sf. Components: Transportation $2,269 + Public Buildings $175 + Correctional/Law Enf $198 + Fire Rescue $16 + 1.5% admin $40. Other industrial rows: ITE 140 Manufacturing $1,694; ITE 150 Warehousing $1,094; ITE 151 Mini-Warehouse $622. PHASE-IN: 1/1/2027 = $2,926; 1/1/2028 = $3,158 — re-read each 1/1.
Where in Martin County are you building?
Each jurisdiction applies its own fee schedule. Pick yours. Totals shown are for a 25,000 sq ft building, including one-time water/sewer fees (assuming a 1-inch meter). = one or more fees are unconfirmed or have no published amount; the figure shown may not be the complete cost.
Unincorporated Martin County: Office Impact Fees
Office development in unincorporated Martin County pays $3.52 per square foot in impact fees, plus $3,810.00 in one-time water and sewer connection fees (rates sourced July 14, 2026).
For a 25,000 sq ft building, that comes to about $91,685.00. The calculator below adjusts to your exact square footage.
The largest line items are Sewer Capital Facility Charge (Martin County Utilities) — 1 ERC ($2,100.00 one-time), Water Capital Facility Charge (Martin County Utilities) — 1 ERC ($1,710.00 one-time) and County Impact Fee (Martin County, Office) ($3.52/sq ft).
View the full fee schedule
- Water Capital Facility Charge (Martin County Utilities) — 1 ERC$1,710.00 one-timeMartin County Utilities and Solid WasteMartin County Utilities rate schedule, eff. 6/1/2025, Table 12 (Capital Facility and Distribution Line Charges): 'Single Family & Commercial per ERC' = $1,710.00 water. NONRES ERC BASIS CONFIRMED ON AUDIT 2026-07-14: Martin County LDR Art. 4, Div. 6, Subd. 1, Sec. 4.181 (Definitions) — 'For nonresidential use ... one equivalent residential connection shall equal 250 gallons per day.' ERC = factor converting average daily flow (ADF) to equivalent units; nonres ERC count = ADF / 250 gpd. The published 1-ERC charge is entered as the default. MCU publishes NO meter-size ladder for the capital facility charge — the per-ERC figure IS the whole fee; the meter/lateral connection charges (Table 10) are separate and additive. The $/ERC figure is shared across customer classes (single-family and commercial identical) — shared-ladder precedent, NOT residential contamination. Distribution line charge is separate, at cost, waived where the developer installs the lines. Resolves the prior 'multiplier unconfirmed' flag.
- Sewer Capital Facility Charge (Martin County Utilities) — 1 ERC$2,100.00 one-timeMartin County Utilities and Solid WasteMartin County Utilities rate schedule, eff. 6/1/2025, Table 12 (Capital Facility and Distribution Line Charges): 'Single Family & Commercial per ERC' = $2,100.00 sewer. NONRES ERC BASIS CONFIRMED ON AUDIT 2026-07-14: Martin County LDR Art. 4, Div. 7, Subd. 1, Sec. 4.262 (Definitions) — 'For nonresidential units, one equivalent residential connection shall equal 250 gallons per day (250 gpd).' Nonres ERC count = average daily flow / 250 gpd; the published 1-ERC charge is entered as the default. MCU publishes NO meter-size ladder for the sewer capital facility charge — the per-ERC figure IS the whole fee. Shared $/ERC across customer classes (single-family and commercial identical) — shared-ladder precedent, NOT residential contamination. Industrial waste charge (Table 14, $46.84 per 1,000 gal of contracted capacity) is a recurring charge, not a capital fee. Resolves the prior 'multiplier unconfirmed' flag.
- City Impact Fee (Martin County - Unincorporated, Office)$0.00N/A — unincorporated area$0 CONFIRMED — unincorporated Martin County has no city government, so no city-level impact fee applies. All development impact fees here are county fees (LDR Art. 6) — see County records.
- County Impact Fee (Martin County, Office)$3.52/sq ftMartin County Board of County CommissionersMartin County LDR Art. 6 (Ord. No. 562), Exhibit B, Figure 6.1, Table 6 (Office), effective 1/1/2026. Schedule row: ITE 710 Office = $3,515 per 1,000 sf. Components: Transportation $2,713 + Public Buildings $339 + Correctional/Law Enf $311 + Fire Rescue $100 + 1.5% admin $52. (ITE 720 Medical Office = $7,842 — alternate land-use row, not entered per guide.) PHASE-IN: 1/1/2027 = $3,832; 1/1/2028 = $4,148 — re-read each 1/1. County nonres schedule has NO Parks, Conservation/Open Space or Library columns; school impact fees do not reach nonres.
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How impact fees work in Florida
Florida impact fees are one-time charges on new development, governed by Section 163.31801, Florida Statutes (the Florida Impact Fee Act). The statute requires fees to be based on the most recent and localized data, spent on the infrastructure category they were collected for, and adopted by ordinance.
Since 2021, the law also limits how fast fees can rise: increases up to 25% phase in over two years, increases of 25–50% phase in over four years, and increases above 50% are allowed only with a demonstrated extraordinary-circumstances study and at least a two-thirds vote of the governing body.
Counties and cities can both levy impact fees. Inside an incorporated city, a project typically pays the county's countywide fees plus any municipal fees the city has adopted, which is why totals differ between a city and the unincorporated county around it.
Frequently asked questions
What are single-family impact fees in Martin County, Florida?
A new single-family home in unincorporated Martin County pays $17,580.39 per unit in impact fees (rates sourced July 14, 2026). This figure includes amounts that have not been confirmed with the jurisdiction; verify before budgeting. Inside city limits, fees are set by each city's own schedule and may be completely different. See the city pages for their rates.
How much are multifamily impact fees in Martin County?
Multifamily development in unincorporated Martin County pays $12,569.08 per unit in impact fees (rates sourced July 14, 2026). This figure includes amounts that have not been confirmed with the jurisdiction; verify before budgeting. Rates inside city limits depend on the municipality. Pick your city on this page.
How much are commercial impact fees in Martin County?
Commercial development in unincorporated Martin County pays $8.02 per square foot in impact fees, plus $3,810.00 in one-time water and sewer connection fees, about $405,010.00 for a 50,000 sq ft building.
Do cities in Martin County charge their own impact fees?
Yes. Every incorporated city applies its own fee schedule. 5 of 5 cities in Martin County levy municipal impact or utility fees; each city page shows the full schedule that applies inside its limits.
Can Florida impact fees increase at any time?
No. Section 163.31801, Florida Statutes limits increases to 50% at most, phased in over two to four years, unless the local government makes extraordinary-circumstances findings and approves the increase by at least a two-thirds vote.
Fee amounts on this page are compiled from official published schedules and are provided for planning purposes only. Rates change, and project specifics (unit size, meter size, location within special districts) can alter what applies. Always verify current fees with the jurisdiction and utility before relying on them.