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Professional Home Addition Service
Add square footage with BOOTMARK's licensed contractors. Room additions, second-story builds, sunrooms, and accessory dwelling units (ADUs).
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Small expansion
Single-room addition
Second-story or ADU
Contact us for commercial properties or special requirements
Plan 4 to 8 months from design to completion, with permitting alone often taking 1 to 3 months. Start the design and approval process well ahead of when you want construction to begin.
Answers from the providers who do this work every day.
Priced per square foot and highly regional, but generally more than new construction per foot because of tie-in work — matching foundation, roofline, siding, and extending existing systems.
For anything structural or multi-room, yes, and many jurisdictions require stamped drawings. An engineer is separately required where you are altering load paths or adding a second storey.
Usually, though expect dust, noise, and periods without power or water at the tie-in points. If the addition touches the kitchen or the only bathroom, plan alternatives for those weeks.
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