Assessor’s Office

Notices of property valuation for the current tax year are mailed to all property owners by April 1st. It is important that property owners review the valuation figures on the Notice of Value because this is the last step in the review process. The value on the notice is what will be used to calculate the taxes you will pay after your local government agencies and school districts set their budgets and the tax rates are adopted. 

Taxable value on real and personal property is one-third of the total appraised value, minus any allowable exemptions, such as head-of-household or veteran's exemptions. Property in New Mexico is classified as residential or non-residential and is taxed at different rates.

Socorro County Assessor

Socorro County Assessor Julie Griego is serving her second term beginning in 2023. Her Chief Deputy is Elaine Briggs

The Socorro County Assessor's Office determines the property value of homes, businesses, and other taxable properties within the county for ad valorem tax purposes. The office also prepares the tax rolls for the County Treasurer for real property (land and improvements), personal property (business equipment), livestock, and mobile homes.

Julie Griego


Phone: 575-835-0714

Julie Griego

Chief Deputy Assessor

Elaine Briggs was appointed by Ms. Griego as Chief Deputy Assessor.

Elaine Briggs

Chief Deputy

Phone: 575-835-0714 

Elaine Briggs

Assessor’s Forms

Assessor Websites

Rio Grande Estates FAQ

Rio Grande Estates is a subdivision located in northern Socorro County. The subdivision was created in the 1960s with thousands of one acre lots and marketed throughout the east coast. Located below is a location map for Rio Grande Estates, a summarized plat of the Units. The original 1960s advertisement may be seen here.

If you are interested in selling or buyer parcels in the Rio Grande Estates and Tierra Grande areas, please visit our buyer/seller exchange page.