Gem State Developmental Center

Exceptional Service For Extraordinary People

Who We Are

Gem State Developmental Center, Inc.opened in 1983 and was the first privately owned and operated Developmental Disability Agency (DDA) in Idaho.


The owners, Martin & Rosalie Landholm owned and operated several ICF/MR group homes in the area for several years prior to opening the DDA.

We Will Make A Difference

We provide individualized, continual, and uninterrupted services and supports to children and adults with developmental disabilities.


We encourage individuals to maximize their skills and strengths for greater independence, self–direction and positive social behaviors.


In a supportive family–oriented environment, we are compassionate at assisting, helping, and equipping others to manage their day–to–day activities for optimum success.