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ADUs are allowed in Timnath
Types:DetachedInternal

Accessory Dwelling Unit (ADU) Rules for Timnath, CO

Is your property eligible for an ADU?

# of Properties
5,363
Owner-occupied
82%
Zoning districts
18
Median Lot Size
0.17 acres
Avg Income
$171,197
Residential Types:
5,363 housing units
Other
100%
Zoning Districts:
5,823 parcels · 18 districts
R-2
54%(3,138)
R-3
20%(1,154)
R-E
8%(440)
R-4
7%(410)
Other
12%(681)

ADU Rules

What can you build in Timnath, CO?

Timnath, CO follows state and local rules for Accessory Dwelling Units. Here is a concise overview of the local rules.

Interior / Attached ADU Size Limits

  • Maximum size of 850 sq ft on lots up to 10,000 sq ft or 1,000 sq ft on larger lots (attached ADU)
  • Maximum size equal to the principal building’s footprint (internal ADU)

Detached ADU Size Limits

  • Maximum size of 850 sq ft on lots 10,000 sq ft or less; 1,000 sq ft on lots 10,001 sq ft or more

Max Units

  • 1 ADU per single-family detached lot

Owner Occupancy

  • Owner-occupancy not required.

Parking

  • 0 spaces/ADU; if provided, must meet lot coverage/frontage standards; no separate driveway unless ADU is alley-accessed and the primary dwelling is street-accessed

Rental Restrictions

  • Short-term rentals require Town approval and a license; cap is 15 nights per month (3 reservations) and up to 6 guests; inspections and neighbor notice required; ADUs used for STRs must meet ADU standards.

ADU State Law

What can you build in Colorado?

  • ADUs must be approved based on objective standards; no discretionary hearings allowed.
  • Historic properties: Local historic review may still apply in designated historic districts.
  • Exempt parcels: ADUs are not required to be allowed on parcels without adequate water/sewer, in floodways, or on certain historic properties.
  • HOAs cannot prohibit ADUs: HOA rules that conflict with the state ADU law are void.
  • Parking exceptions exist: In rare cases, one parking space may be required if there is no existing off-street parking and on-street parking is prohibited.
  • Local rules still matter: Building code, fire code, utility capacity, and life-safety standards still apply.
  • More permissive is allowed: Municipalities may allow larger ADUs, multiple ADUs, or additional housing types beyond what the state requires.
  • Local zoning controls whether ADUs are allowed at all.
  • HOA rules may still apply.
  • More permissive local rules are allowed.

What's allowed on your lot?

These are the municipality-wide rules. What's allowed on a specific property also depends on state laws, setbacks, floor area ratio, lot coverage, environmental constraints, topography, and other property-specific factors. Search your address on FutureLot to see what's allowed on your property.

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Is your property eligible for an ADU?

ADU rules in other Colorado municipalities

Rules change at the town line. Check the municipality your property is actually in.

Larimer County

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