Income Imputed From Asset: Primary Home

I had a review of my current child support arrangement and it went up. I noticed in the findings write-up that my income was reported at a higher value than I claimed on the financial disclosure form. The only possible reason I can ascertain for this is having income imputed via asset: my new primary home that I purchased last year. I have a mortgage with only 5% down. Can judges/court commissioners in Milwaukee, WI impute income from your primary residence/home? It's hard for me to understand how this could be, since my home does not generate income (unlike a trust fund or annuity). Any insights are greatly appreciated.