This document discusses using spatial microsimulation to estimate household characteristics at small area levels. It describes using survey data constrained by census data to model characteristics like time use, income, expenditures, and internet access at local area unit (LAU) levels. Examples are provided showing the method estimated characteristics like income deprivation, telephone bills, and water expenditures at LAU levels with correlations to other data sources from 0.77 to 0.84. Future work discussed includes modeling health behaviors, broadband access, and relative deprivation over time at LAU levels.