Nampa, ID Development Impact Fees (2026)
A new single-family home in Nampa, Idaho pays about $13,760 in total development impact and water/sewer connection fees per unit as of Jun 16, 2026 — about $10,094 in impact/development fees plus $3,666 in water & sewer connection (tap/SDC) fees. Every figure below is normalized per dwelling unit by category, with a link to its official source.
What a single-family home pays in Nampa
$13,760 total per unit across 6 fee categories.
- Transportation / roads$4,933
- Parks & recreation$3,133
- Water connection (tap / SDC)$1,851
- Sewer connection (tap / SDC)$1,815
- Fire / EMS$1,267
- Police$761
At $13,760, Nampa is below the Idaho tracked median of $19,153 — relatively affordable to build in.
Full fee schedule — single-family detached
Impact / development fees
| Fee (local term) | Basis | Amount | Source · effective |
|---|---|---|---|
Parks & recreation Parks Impact Fee — City of Nampa development impact fee, effective for building permit applications submitted on/after Jan 1, 2026. VERIFIED against PDF table: 2026 SF Parks = $3,133. | per dwelling unit | $3,133 | City of Nampa Building Safety Department Jan 1, 2026High |
Police Police Impact Fee — City of Nampa development impact fee, 2026 schedule. VERIFIED: 2026 SF Police = $761. | per dwelling unit | $761 | City of Nampa Building Safety Department Jan 1, 2026High |
Fire / EMS Fire Impact Fee — City of Nampa development impact fee, 2026 schedule. VERIFIED: 2026 SF Fire = $1,267 (down from $1,658 in 2024 per the same table). | per dwelling unit | $1,267 | City of Nampa Building Safety Department Jan 1, 2026High |
Transportation / roads Streets (Transportation) Impact Fee — City of Nampa 'Streets' development impact fee = the transportation impact fee, collected at building permit. VERIFIED: 2026 SF Streets = $4,933, Total $10,094. Nampa Highway District No.1 levies no separate transportation impact fee inside city limits. | per dwelling unit | $4,933 | City of Nampa Building Safety Department Jan 1, 2026High |
Transportation / roads Streets Impact Fee (2024 schedule - superseded) — SUPERSEDED prior schedule, kept for reference. VERIFIED: 2024 SF total $8,194 (Parks $2,476 / Police $639 / Fire $1,658 / Streets $3,421); applies only to permit applications submitted before Jan 1, 2026. Correctly excluded from total. alternative · not added to total | per dwelling unit | $3,421 | City of Nampa Building Safety Department Jul 1, 2024High |
Water & sewer connection fees
| Fee (local term) | Basis | Amount | Source · effective |
|---|---|---|---|
Sewer connection (tap / SDC) Wastewater (Sewer) Connection / Hookup Fee — Wastewater hookup/connection fee per the 2026 bulletin (labeled '2024 Fee (current)' - still in effect). VERIFIED verbatim. | per dwelling unit | $1,815 | City of Nampa Building Safety Department Jan 1, 2026High |
Water connection (tap / SDC) Domestic Water Connection / Hookup Fee — City domestic water connection/hookup capacity fee. VERIFIED verbatim. Physical meter-set/tap costs billed separately. Outdoor demand served by separate pressurized irrigation system. | per dwelling unit | $269 | City of Nampa Building Safety Department Jan 1, 2026High |
Water connection (tap / SDC) Pressurized Irrigation Hookup Fee (1in service) — ADDITIVE to domestic water fee; Nampa requires new residential to connect to its pressurized (non-potable) irrigation system, billed by service size. 1in is the typical single-family connection (representative). VERIFIED verbatim. | per meter | $1,582 | City of Nampa Building Safety Department Jan 1, 2026High |
Water connection (tap / SDC) Pressurized Irrigation Hookup Fee (1.5in service) — Larger irrigation service variant; mutually exclusive with the 1in residential primary. VERIFIED verbatim. Correctly excluded from total. alternative · not added to total | per meter | $3,165 | City of Nampa Building Safety Department Jan 1, 2026High |
Water connection (tap / SDC) Pressurized Irrigation Hookup Fee (2in service) — Larger irrigation service variant; mutually exclusive with the 1in residential primary. VERIFIED verbatim. Correctly excluded from total. alternative · not added to total | per meter | $5,062 | City of Nampa Building Safety Department Jan 1, 2026High |
Water connection (tap / SDC) Pressurized Irrigation Hookup Fee (3in service) — Larger irrigation service variant; mutually exclusive with the 1in residential primary. VERIFIED verbatim. Correctly excluded from total. alternative · not added to total | per meter | $10,124 | City of Nampa Building Safety Department Jan 1, 2026High |
Multifamily (per unit) impact fees in Nampa
About $8,658 per unit ($6,627 impact + $2,031 water/sewer connection).
Impact / development fees
| Fee (local term) | Basis | Amount | Source · effective |
|---|---|---|---|
Parks & recreation Parks Impact Fee (Multifamily) — Multifamily (duplex and greater) per-unit rate, 2026 schedule. VERIFIED: 2026 MF Parks = $2,450. | per dwelling unit | $2,450 | City of Nampa Building Safety Department Jan 1, 2026High |
Police Police Impact Fee (Multifamily) — Multifamily per-unit rate, 2026 schedule. VERIFIED: 2026 MF Police = $595. | per dwelling unit | $595 | City of Nampa Building Safety Department Jan 1, 2026High |
Fire / EMS Fire Impact Fee (Multifamily) — Multifamily per-unit rate, 2026 schedule. VERIFIED: 2026 MF Fire = $886. | per dwelling unit | $886 | City of Nampa Building Safety Department Jan 1, 2026High |
Transportation / roads Streets (Transportation) Impact Fee (Multifamily) — Multifamily per-unit Streets impact fee, 2026 schedule. VERIFIED: 2026 MF Streets = $2,696, Total $6,627. | per dwelling unit | $2,696 | City of Nampa Building Safety Department Jan 1, 2026High |
Water & sewer connection fees
| Fee (local term) | Basis | Amount | Source · effective |
|---|---|---|---|
Sewer connection (tap / SDC) Wastewater (Sewer) Connection Fee (Multifamily, per EDU) — Multifamily wastewater connection fee per equivalent dwelling unit (EDU). VERIFIED verbatim. | per dwelling unit | $1,815 | City of Nampa Building Safety Department Jan 1, 2026High |
Water connection (tap / SDC) Domestic Water Connection Fee (Multifamily, per EDU) — Multifamily domestic water connection fee per EDU. VERIFIED. Separate additive fire flow fee of $54 per Equivalent Fire Unit (EFU) also applies per the table. | per dwelling unit | $216 | City of Nampa Building Safety Department Jan 1, 2026High |
Coverage & caveats
FOUND (City of Nampa, all from official Dec 4, 2025 bulletin GA-11-2025-35, high confidence): Parks, Police, Fire, and Streets (transportation) development impact fees per dwelling unit for both single-family/townhouse and multifamily; wastewater (sewer) connection/hookup fees; domestic water connection fees; and pressurized irrigation hookup fees. 2026 single-family impact-fee total = $10,094 ($3,133 parks + $761 police + $1,267 fire + $4,933 streets). 2026 multifamily total = $6,627 per unit.
Does not exist / not applicable
(1) NO SCHOOL IMPACT FEE - Idaho Code 67-8203 limits impact fees to police, fire, streets, and parks; schools are not an eligible public facility statewide. (2) NO separate highway-district transportation impact fee within Nampa - it is in Canyon County; Nampa Highway District No.1 is property-tax funded and levies no impact fee; Canyon County / Highway District No.4 transportation impact fee applies only to the Mid-Star (Star/Middleton) service area, not inside Nampa city limits. The City's own 'Streets' impact fee is the transportation fee. (3) NO standalone drainage, library, open-space, affordable-housing, or general/capital impact fee categories - Idaho law does not authorize these and Nampa publishes none. (4) Stormwater/drainage handled via site design and permit review, not a per-unit impact fee.
Adu / mobile home
bulletin treats single-family, townhouse, and mobile/manufactured homes under one 'Single Family/Townhouse/Mobile' category (confirmed in the Impact Fee Category table). No separate ADU tier; exemptions include additions that do not increase service units and replacing one residential unit with another on the same lot. ADUs adding a service unit are assessed at applicable per-unit rates.
Verify
confirmed 18 of 18 rows; dropped 0. All 18 fee rows cite sourceIndex 0 (the bulletin PDF), which was re-downloaded and text-extracted; every amount and every sourceQuote was confirmed present verbatim or as an accurate rendering of the table layout (2026 SF: Parks 3133/Police 761/Fire 1267/Streets 4933/Total 10094; 2026 MF: Parks 2450/Police 595/Fire 886/Streets 2696/Total 6627; Wastewater SF and MF/EDU 1815; Water SF 269, MF/EDU 216; Irrigation 1in 1582, 1.5in 3165, 2in 5062, 3in 10124; 2024 superseded SF Streets 3421/Total 8194). excludeFromTotal corrections: NONE NEEDED - the three larger irrigation sizes (1.5/2/3in) and the 2024 superseded Streets row are correctly flagged excludeFromTotal=true; the 1in irrigation and all 2026 SF/MF impact + connection rows are correctly included. Representative SF impact total recomputes to exactly $10,094 with no double-counting (irrigation and water/sewer connection fees are distinct components, not duplicated). Note: source 3 (Idaho Code 67-8203) and source 4 (Idaho Reports article) back the school/non-applicability narrative only and gate no numeric fee row; the Idaho Legislature page timed out twice during re-fetch but the statutory scope (parks/police/fire/streets only) is well established and does not affect any confirmed fee. Population is a ~2025 estimate (2020 census was 100,200).
All figures verified against the City of Nampa's official Bulletin GA-11-2025-35, the "2026 Development Impact Fee Schedule," dated December 4, 2025 (PDF re-downloaded and text-extracted during verification). Impact fees (Parks, Police, Fire, Streets) were revised by City Council effective Jan 1, 2026; applications submitted before that date use the 2024 schedule (included as an excluded reference row). The wastewater, water, and pressurized-irrigation connection/hookup fees are shown in the same bulletin as the current fees (labeled "2024 Fee (current)") and remain in effect. For a representative single-family home, the four CITY impact fees total $10,094 ($3,133 parks + $761 police + $1,267 fire + $4,933 streets), plus connection fees: wastewater $1,815 + domestic water $269 + pressurized irrigation (1in) $1,582. The impact fees are flat per dwelling unit (NOT tiered by home square footage). Irrigation is priced by service size (1in = residential default, included; 1.5/2/3in excluded as mutually-exclusive variants). Multifamily 2026 impact-fee total = $6,627/unit; the water fire-flow fee ($54/EFU) is an additive component on top of the $216/EDU multifamily domestic water fee.
Sources
5 official sources · 17 high-confidence figures.
- 1Bulletin GA-11-2025-35: 2026 Development Impact Fee Schedule (Impact Fees + Wastewater/Water/Irrigation Connection Fees)City of Nampa Building Safety Department · fee schedule · effective Jan 1, 2026 · retrieved Jun 16, 2026
- 2Development Impact Fees - City of Nampa Official WebsiteCity of Nampa · municipal webpage · retrieved Jun 16, 2026
- 3Rates and Resolutions (Water/Wastewater/Irrigation Hookup Fee Resolutions)City of Nampa · municipal webpage · retrieved Jun 16, 2026
- 4Idaho Code Section 67-8203 (Development Impact Fees - definitions / eligible public facilities)Idaho Legislature · ordinance · retrieved Jun 16, 2026
- 5Impact fees for schools introduced in Senate committee (confirms schools not currently eligible in ID)Idaho Reports / Idaho Public Television · news article · retrieved Jun 16, 2026
Nampa impact fees — FAQ
- How much are development impact fees in Nampa, ID for a single-family home?
- As of 2026-06-16, total development fees for a single-family detached home in Nampa are about $13,760 per unit — roughly $10,094 in impact/development fees plus $3,666 in water/sewer connection fees. Figures are normalized from official sources; verify with the jurisdiction before relying on them.
- What are the impact fees per multifamily unit in Nampa, ID?
- Total development fees for a multifamily unit in Nampa are about $8,658 per unit as of 2026-06-16.
- Are impact fees in Nampa the same as building permit fees?
- No. Impact fees (and water/sewer connection fees) fund off-site capital — roads, parks, schools, utilities — and are charged per new dwelling unit. Building permit and plan-review fees are separate and are not included here.
- How often do Nampa's impact fees change?
- Most jurisdictions adopt fees by ordinance and escalate them annually (often by a construction cost index), with occasional mid-year updates. Always confirm the current adopted schedule with the jurisdiction. ImpactFeeAtlas last verified Nampa on 2026-06-16.
Compare impact fees in nearby Idaho jurisdictions
Cities with a similar fee burden
Jurisdictions in other states with total single-family fees close to Nampa’s $13,760 per home.