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Home Addition Cost Estimator

Answer a few quick questions. See your estimate immediately after submit – and get a free concept design.

What type of addition are you planning?
Home Expansion
Standard ground-level bump-out
Second Story Addition
Structural + stairs
Garage Addition
Attached or detached
Garden Suite
Coach house / ADU
Other
We will refine in design
Approximate size?
~300 sq.ft.
Small addition
~450 sq.ft.
Typical
~700 sq.ft.
Larger footprint
Interior finish level?
Builder Grade
Good value
Standard
Balanced mix
Premium
Upgraded selections
Any key features?
New Bathroom
Rough-in + finishes
Kitchenette
Garden suite / ADU
HVAC Upgrade
Capacity + ducts
Foundation Work
Footings / slab
Exterior complexity?
Simple
Basic cladding
Standard
Mix of materials
Architectural
Custom details
Professional services (optional)
Design + 3D
Concept to DD
Engineering
Struct./mech. review
Permits
Prep + submission