Planning & Zoning

Please contact the Planning and Zoning Department prior to purchasing land or commencing any land use activity in Costilla County.
Click here to access the 2018 Building Code (IRC - International Residential Code)
Costilla County Design Criteria 2018 Building Code (IRC - International Residential Code)

To apply for permits on-line click here.

To submit a complaint to Code Enforcement click here.


Costilla County Offices are open to the public.  If you cannot appear in person, payments can be made by calling the Treasurer's Office (719-937-7672) or by mail.

Costilla County Treasurer

PO Box 348

San Luis, CO 81152


Planning and Zoning Office number: (719) 937-7668

Email Permit Applications to:





Email Soil Evaluations to:




Special Review and other big projects email:



Please read the document below before occupying a parcel or beginning any development activities. 

Residential Development Procedures


For more information on permits, the Land Use Code, Planning Commission, etc., visit the Planning and Zoning Resources Page

Planning and Zoning Office
P.O. Box 130
400 Gaspar Street
San Luis, CO 81152
Phone: (719) 937-7668
Office Hours:
7:00 a.m.  5:30 p.m.
Monday - Thursday
No closure for lunch

Need A Physical Address? Please Contact the Planning and Zoning Office. You will need the Legal Description of the property and the owner's name that is registered in the Costilla County Assessor's office. This information is needed to properly address the property. A Physical Address will NOT be issued to Vacant Land. There is a $20.00 fee for this process.

County Wide:

Snow Load: 30lbs/square foot

Wind Load: 90miles/hour

* Manufactured Homes must be 1976 or newer to be allowed in Costilla County *

Visit Costilla County's Assessor page for information on property such as Ownership, Legal Description, or Values.