Castle Rock, CO vs Erie, CO: Development Impact Fees Compared (2026)
A single-family home pays about $83,007 in Castle Rock vs $94,679 in Erie — Erie is $11,672 (14%) higher. Every figure below is normalized per dwelling unit by category, with links to each jurisdiction’s official sources.
Town
Castle Rock, CO
$83,007
Total per single-family home
impact + connection fees
$31,117
Impact / development fees
roads, parks, schools…
$51,890
Water & sewer connection
tap / capacity / SDC
$23,108
Per multifamily unit
total fees / unit
Impact / development fees
| Fee (local term) | Basis | Amount | Source · effective |
|---|---|---|---|
Parks & recreation Parks & Recreation Impact Fee — Representative 2,000-2,499 sq ft single-family tier (PDF page 4, subtotal $29,852). Tiered by home square footage. | per dwelling unit | $9,980 | Town of Castle Rock, CO Jan 1, 2026High |
General government / capital Municipal Facilities Impact Fee — Municipal/general government capital facilities. Representative 2,000-2,499 sq ft tier (PDF page 4). | per dwelling unit | $525 | Town of Castle Rock, CO Jan 1, 2026High |
Fire / EMS Fire Impact Fee — Representative 2,000-2,499 sq ft single-family tier (PDF page 4). | per dwelling unit | $1,484 | Town of Castle Rock, CO Jan 1, 2026High |
Police Police Impact Fee — Representative 2,000-2,499 sq ft single-family tier (PDF page 4). | per dwelling unit | $803 | Town of Castle Rock, CO Jan 1, 2026High |
Transportation / roads Transportation Impact Fee — Flat per single-family unit, identical across all square-footage tiers (PDF page 4). | per dwelling unit | $17,060 | Town of Castle Rock, CO Jan 1, 2026High |
Drainage / stormwater Stormwater Impact Fee (Cherry Creek Basin) — Primary basin (PDF page 4 Stormwater table). Plum Creek Basin alternative ($2,839) is a mutually-exclusive variant, included separately as excludeFromTotal. | per dwelling unit | $1,265 | Town of Castle Rock, CO Jan 1, 2026High |
Parks & recreation Parks & Recreation Impact Fee (<2,000 sq ft tier) — Smaller home tier (<2,000 sq ft) reference row. Full <2,000 subtotal (parks+muni+fire+police+transp) = $27,414. alternative · not added to total | per dwelling unit | $8,080 | Town of Castle Rock, CO Jan 1, 2026High |
Parks & recreation Parks & Recreation Impact Fee (2,500-2,999 sq ft tier) — Larger home tier (2,500-2,999 sq ft) reference row. Full 2,500-2,999 subtotal = $31,033. alternative · not added to total | per dwelling unit | $10,901 | Town of Castle Rock, CO Jan 1, 2026High |
Parks & recreation Parks & Recreation Impact Fee (>5,000 sq ft tier) — Largest home tier (>5,000 sq ft) reference row. Full >5,000 subtotal = $37,424. alternative · not added to total | per dwelling unit | $15,884 | Town of Castle Rock, CO Jan 1, 2026High |
Drainage / stormwater Stormwater Impact Fee (Plum Creek Basin variant) — Mutually-exclusive basin alternative to the Cherry Creek Basin primary row; a parcel is in only one basin (PDF page 4). alternative · not added to total | per dwelling unit | $2,839 | Town of Castle Rock, CO Jan 1, 2026High |
Water & sewer connection fees
| Fee (local term) | Basis | Amount | Source · effective |
|---|---|---|---|
Water connection (tap / SDC) Water System Development Fee (3/4" meter, 1.00 SFE) — Standard residential 3/4" meter (1.00 SFE), PDF page 5; double-confirmed on Town System Development Fees webpage. Smaller meter variants (0.60 and 0.67 SFE) included as excluded reference rows. | per meter | $9,931 | Town of Castle Rock, CO Jan 1, 2026High |
Water connection (tap / SDC) Renewable Water (Water Resources) System Development Fee (3/4" meter, 1.00 SFE) — ADDITIVE renewable-water/water-resources capital charge on top of the base Water System fee (PDF Total column = $51,890 = water+renewable+wastewater). Standard 3/4" meter, 1.00 SFE; double-confirmed on webpage. | per meter | $35,829 | Town of Castle Rock, CO Jan 1, 2026High |
Sewer connection (tap / SDC) Wastewater System Development Fee (3/4" meter, 1.00 SFE) — Standard residential 3/4" meter (1.00 SFE), PDF page 5; double-confirmed on webpage. NOT charged for Cobblestone Ranch Subdivision (served by Pinery Water and Wastewater District for wastewater, per PDF footnote). | per meter | $6,130 | Town of Castle Rock, CO Jan 1, 2026High |
Water connection (tap / SDC) Water System Development Fee (3/5"x3/4" meter, 0.60 SFE variant) — Smallest meter variant (0.60 SFE). amount = Water-System-only column ($5,959); combined water+renewable+wastewater total at this meter = $31,134. Excluded as a mutually-exclusive meter-size variant of the 3/4" primary; double-confirmed on webpage. alternative · not added to total | per meter | $5,959 | Town of Castle Rock, CO Jan 1, 2026High |
Water connection (tap / SDC) Water System Development Fee (5/8"x3/4" meter, 0.67 SFE variant) — Meter variant (0.67 SFE). amount = Water-System-only column ($6,654); combined water+renewable+wastewater total at this meter = $34,766. Excluded as a mutually-exclusive meter-size variant of the 3/4" primary; double-confirmed on webpage. alternative · not added to total | per meter | $6,654 | Town of Castle Rock, CO Jan 1, 2026High |
Town
Erie, CO
$94,679
Total per single-family home
impact + connection fees
$16,329
Impact / development fees
roads, parks, schools…
$78,350
Water & sewer connection
tap / capacity / SDC
$9,216
Per multifamily unit
total fees / unit
Impact / development fees
| Fee (local term) | Basis | Amount | Source · effective |
|---|---|---|---|
Parks & recreation Parks & Recreation Impact Fee | per dwelling unit | $2,803 | Town of Erie, CO Jan 1, 2026High |
Police Police Facilities Impact Fee | per dwelling unit | $686 | Town of Erie, CO Jan 1, 2026High |
General government / capital Public Facilities Impact Fee — General/municipal capital facilities impact fee. | per dwelling unit | $4,276 | Town of Erie, CO Jan 1, 2026High |
Drainage / stormwater Storm Drainage System Impact Fee | per dwelling unit | $1,862 | Town of Erie, CO Jan 1, 2026High |
Transportation / roads Transportation Facilities Impact Fee (standard area) — PRIMARY transportation rate; applies to property outside the Town Center PD and Historic Old Town (covers most new residential development). | per dwelling unit | $6,402 | Town of Erie, CO Jan 1, 2026High |
Transportation / roads Transportation Facilities Impact Fee (Town Center / Old Town) — Mutually-exclusive geographic variant (Town Center PD / Historic Old Town OTR/NMU/DT/MR zones); excluded from total in favor of the townwide standard rate. Verified verbatim on live 2026 page. alternative · not added to total | per dwelling unit | $4,546 | Town of Erie, CO Jan 1, 2026High |
Other Tree Impact Fee — Per-dwelling-unit tree/urban-forestry impact fee; same $300 for all dwelling types (page shows 'All other dwelling units $300'). | per dwelling unit | $300 | Town of Erie, CO Jan 1, 2026High |
Water & sewer connection fees
| Fee (local term) | Basis | Amount | Source · effective |
|---|---|---|---|
Water connection (tap / SDC) Potable Water Tap Fee (3/4 inch residential) — Base 3/4" residential meter (typical single-family). Fees double for parcels outside Town limits. Confirmed by Ordinance 039-2024 ($17,290). | per meter | $17,290 | Town of Erie, CO Jan 1, 2026High |
Water connection (tap / SDC) Fee in Lieu of Water Dedication / Raw Water Fee (single-family residential) — SEPARATE, ADDITIVE one-time fee on top of the water tap fee (Ordinance 039-2024: 'separate and distinct fees'). Single largest residential charge. VERIFIED at $52,200 verbatim on the live 2026 fee schedule (sourceIndex 0). NOTE: Ordinance 039-2024 and the Water Dedication Guide state the 2025 fee-in-lieu was $31,400/SFE; the fee escalated to $52,200 for 2026. The 2026 amount is NOT supported by the Water Dedication Guide (which still shows $31,400) — confirmation rests on the live 2026 fee schedule only. | per dwelling unit | $52,200 | Town of Erie, CO Jan 1, 2026High |
Sewer connection (tap / SDC) Wastewater (Sewer) Tap Fee (3/4 inch) — Base 3/4" residential. Fees double for parcels outside Town limits. Confirmed by Ordinance 039-2024 ('Wastewater tap fee: ¾ inch 8,860.00'). | per meter | $8,860 | Town of Erie, CO Jan 1, 2026High |
Water connection (tap / SDC) Potable Water Tap Fee (1 inch) — Larger meter variant; excluded in favor of the base 3/4" residential meter. Confirmed by Ordinance 039-2024. alternative · not added to total | per meter | $28,820 | Town of Erie, CO Jan 1, 2026High |
Sewer connection (tap / SDC) Wastewater (Sewer) Tap Fee (1 inch) — Larger meter variant; excluded in favor of the base 3/4" residential meter. Confirmed by Ordinance 039-2024 ('1 inch 14,767.00'). alternative · not added to total | per meter | $14,767 | Town of Erie, CO Jan 1, 2026High |
What drives the difference
Erie’s $94,679 per single-family home is $11,672 (14%) above Castle Rock’s $83,007. The largest single difference is in water connection (tap / sdc): Erie charges about $69,490 there versus $45,760 in Castle Rock — a $23,730 swing that accounts for much of the overall gap. The two also differ in how much falls on water and sewer connection charges: $51,890 in Castle Rock versus $78,350 in Erie.
Keep comparing
Castle Rock vs Erie impact fees — FAQ
- Which has higher impact fees, Castle Rock or Erie?
- Erie, CO is higher. A single-family home pays about $94,679 per unit in Erie versus $83,007 in Castle Rock, CO — $11,672 (14%) more, as of 2026.
- How much more does it cost to build a home in Erie than in Castle Rock?
- About $11,672 more per single-family home — $94,679 in Erie, CO versus $83,007 in Castle Rock, CO, a difference of 14% in total development impact and connection fees.
- What's the difference between impact fees in Castle Rock and Erie for a single-family home?
- Castle Rock, CO charges about $83,007 per single-family home ($31,117 impact + $51,890 water/sewer connection), while Erie, CO charges about $94,679 ($16,329 impact + $78,350 connection). Figures are normalized from official sources for 2026.