Castle Rock, CO Development Impact Fees (2026)

What a single-family home pays in Castle Rock

$83,007 total per unit across 8 fee categories.

Castle Rock’s $83,007 is about 2.2× the Colorado tracked median of $38,504 — among the higher-cost places to build in the state.

Full fee schedule — single-family

Full fee schedule — multifamily

Coverage & caveats

SOURCE: Town of Castle Rock adopted 2026 Fee Schedule PDF (effective Jan 1, 2026), pages 4-5, the current authoritative document; confirmed against the Town's System Development Fees webpage which shows identical 2026 numbers. High confidence on all figures. WHAT EXISTS (residential): Town development impact fees — Parks & Recreation, Municipal Facilities, Fire, Police, Transportation (these vary by home square footage except Transportation which is flat) plus a separate Stormwater development impact fee (varies by drainage basin). System Development Fees (SDFs, i.e., tap/capacity/connection fees) — Water System, Renewable Water (aka Water Resources), and Wastewater, charged by water meter size/SFE. These water/sewer SDFs are LARGE (a standard 3/4" single-family connection totals $51,890 = $9,931 water + $35,829 renewable + $6,130 wastewater). NORMALIZATION: (1) Impact-fee primary row uses the 2,000-2,499 sq ft single-family tier as the representative ~2,000-2,500 sq ft home; the <2,000 and 2,500-2,999 and >5,000 tiers are included as excludeFromTotal=true reference rows. (2) Water/Renewable/Wastewater SDF primary rows use the base residential 3/4" meter (1.00 SFE); the smaller 3/5"x3/4" (0.60 SFE) and 5/8"x3/4" (0.67 SFE) variants are excluded reference rows. (3) Stormwater primary = Cherry Creek Basin; the Plum Creek Basin variant is an excluded mutually-exclusive alternative. Renewable Water is ADDITIVE on top of Water System (PDF shows Water + Renewable + Wastewater summing to the $51,890 Total), so it is included in the total, not excluded. (4) Multifamily rows are a separate land-use group (per dwelling unit), not variants of the SFD primary, so they are not flagged excludeFromTotal and do not double-count. WHAT DOES NOT EXIST HERE: (a) NO standalone school impact fee — Colorado does not permit a per-permit school impact fee (Bd. of County Comm'rs of Douglas County v. Bainbridge, Colo. Supreme Court 1997); school needs are addressed via land dedication / fee-in-lieu negotiated at the subdivision/plat stage — deal-specific, not a published fixed per-unit fee. (b) NO separate library, open-space, police-only-beyond-impact, or affordable-housing impact fee is published in the Town schedule. (c) NO general/capital impact fee beyond "Municipal Facilities" (which IS reported). SEPARATE-DISTRICT CAVEATS: (1) Wastewater SDF is NOT charged by the Town for the Cobblestone Ranch Subdivision — that subdivision's wastewater is served by the separate Pinery Water and Wastewater District (confirmed by PDF footnote on page 5). (2) An equipment surcharge per wastewater connection applies only to certain (Macanta) connections. (3) Douglas County and the Douglas County School District may impose their own platting-stage dedications/fees not in the Town schedule. UPCOMING CHANGE (caveat): In April 2026 the Town Council reportedly approved a revised method to calculate water System Development Fees based on home square footage, reducing costs for smaller homes. That revised method is NOT reflected in the current effective Jan 1, 2026 meter-based schedule reported here; builders should confirm whether the new structure has taken effect for their permit date. NOTE: the Denver Gazette article cited for this caveat (sourceIndex 4) returned HTTP 403 (paywall/bot-block) on re-fetch and could not be independently re-confirmed; it backs no reported fee amount and is retained only as a forward-looking caveat. VERIFY: confirmed 24 of 24 rows; dropped 0. All impact-fee, stormwater, and water/renewable/wastewater amounts matched the 2026 Fee Schedule PDF (pages 4-5) exactly, and the 3/4"/0.60/0.67 SFE SDF figures were additionally cross-confirmed against the Town System Development Fees webpage (identical numbers). excludeFromTotal corrections: none — the three non-representative SFD square-footage tiers (<2,000, 2,500-2,999, >5,000), the Plum Creek Basin stormwater variant, and the two smaller meter-size SDF variants (0.60 and 0.67 SFE) were all already correctly flagged excludeFromTotal=true; the multifamily land-use rows were correctly left un-flagged (separate land use, no double-count); Renewable Water correctly left additive/included. Representative SFD all-in total (impact $29,852 + Cherry Creek stormwater $1,265 + SDF $51,890) = $83,007, which is internally consistent with the PDF subtotals and not double-counting. Minor non-blocking note: the two excluded meter-variant rows are labeled "Water System Development Fee" with amount = the Water-System-only column ($5,959 / $6,654) while their notes describe the combined meter total; since these rows are excluded from the total this does not affect any computed figure.

All figures from the Town of Castle Rock Development Impact Fee & System Development Fee tables in the adopted 2026 Fee Schedule (effective Jan 1, 2026), pages 4-5. Residential development impact fees (parks, municipal facilities, fire, police) are tiered by home square footage; transportation is flat per single-family unit. Water/Renewable Water/Wastewater System Development Fees are charged by water meter size / single-family-equivalent (SFE). A complete representative single-family detached home pays: the 2,000-2,499 sq ft impact-fee tier + Cherry Creek Basin stormwater + 3/4" meter (1.00 SFE) water/renewable-water/wastewater SDF (combined SDF total $51,890). INDEPENDENTLY VERIFIED: all impact-fee and SDF amounts confirmed against the PDF; the 3/4", 0.60, and 0.67 SFE water/renewable/wastewater amounts additionally double-confirmed against the Town's System Development Fees webpage (identical 2026 numbers).

Sources

5 official sources · 21 high-confidence figures.

Castle Rock impact fees — FAQ

How much are development impact fees in Castle Rock, CO for a single-family home?

As of 2026-06-16, total development fees for a single-family detached home in Castle Rock are about $83,007 per unit — roughly $31,117 in impact/development fees plus $51,890 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 Castle Rock, CO?

Total development fees for a multifamily unit in Castle Rock are about $23,108 per unit as of 2026-06-16.

Are impact fees in Castle Rock 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 Castle Rock'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 Castle Rock on 2026-06-16.