What Northern Westchester Architects Actually Charge in 2026

A $600,000 addition might run $42K from a solo architect, $68K from a boutique studio, and $108K from a full-service firm — and all three numbers can be reasonable. Here is what northern Westchester architects really charge in 2026, what each fee structure buys, and the additional services that quietly add 3 to 8 percent on top.