Interior Remodeling & Custom Spaces in Oakland County, Michigan | Explore our portfolio of custom interior remodeling projects completed throughout Oakland County, Michigan and the greater Metro Detroit area. As a licensed and insured general contractor, Costello & Co Construction transforms laundry rooms, mudrooms, home offices, living rooms, dining rooms, and whole-home interiors into functional, thoughtfully designed spaces tailored to modern living. From mudroom remodels in Bloomfield Hills to home office renovations in Birmingham and full home transformations in Royal Oak, our work reflects careful planning, expert craftsmanship, and attention to architectural detail. Whether refreshing a single room or completing a full interior renovation, we focus on maximizing layout efficiency, improving organization, and increasing long-term property value.