Does an income unit add to what my Milton house appraises for?

An income unit adds to a Milton appraisal only when it is permitted and the appraiser can document legal rental income, not simply because a second kitchen exists. Unpermitted space is typically excluded from square footage and from any rent an appraiser will credit, so the paperwork matters as much as the layout. Getting the permit history in order before an appraisal is ordered protects the value you are trying to claim. Joel Boss can tell you what Milton's permit record shows before you list.