Residential permit applications

Contractors are required to have a valid license from a jurisdiction with an ICC equivalent exam, certificate of liability of insurance, workers compensation insurance (if applicable) and current registration with the Town of Castle Rock prior to applying for a building permit.

Visit eTrakiT for contractor registration and renewal information. Homeowners may act as their own contractor for residential additions, alterations or repairs.

Submitting applications

Residential building permit types are available through eTrakiT. The Town of Castle Rock Building Division supports Project Green. Project Green promotes an environmentally responsible and sustainable Town workforce, which includes paperless building permit applications. Applicants are strongly encouraged to submit their plans electronically in PDF format for review through eTrakiT.

Alternate methods

As an alternate to eTrakiT, applicants may send their building permit application packages:

Residential permits

Some permit types may not require a plan review and are marked as OTC  (over the counter). Please refer to the eTrakiT online checklist or contact the Building Division by email for questions regarding plan review.

Tankless water heaters require a plan review. Please provide the manufacturers specification sheet and load calculations with your submittal.

Drainage, erosion and sediment control (DESC) permits

The DESC Permit covers temporary land disturbing activities and site grading required for individual single-family or multi-family residential lots during building construction. 

DESC Bonding is temporarily unavailable.  We apologize for the inconvenience.  We anticipate reinstating this function by the end of the year.  DESC Bonding Hold Notice

DESC Permits are required for all new single-family tract, custom, multi-family and attached residences.

Residential Permits

Permit type
Residential detached tract home  
Residential attached (townhouses etc) home  
Custom Home  
Master Plans  
Basement finish
Deck and Porch Uncovered checklist
Covered deck, porch, patio,pergola checklist
Gas line for appliances
Gas line and sewer line repair
Residential air conditioning*
Residential attached garage
Residential detached garage
Residential electric
Residential furnace*

Residential hot tub, pool or spa


Residential miscellaneous


Residential retaining wall


Residential roof


Residential solar


Residential water heater*


Residential water heater - tankless**