KnowRemodeling

Foundation & Structural

Room Additions & Framing

Discover expert guides on room additions & structural framing to plan, excavate, frame, sheath, & connect expanded living spaces

Framed bump-out addition cantilevered off a house wall with new floor joists, sheathing, and a shed roof tie-in under construction
ExteriorRoom Additions & Framing12 min read

Bump-Out Additions Explained: Cantilevers, Roofs, and Real Costs

A practical guide to bump-out additions: how cantilevered floor joists work, the two-to-one rule, roof tie-ins, cost per square foot, and what a DIYer can own.

Small room addition under construction with concrete stem wall, framed floor deck, and partially framed wall tied into a house
ExteriorRoom Additions & Framing13 min read

Plan a Room Addition From Footings to Framing

A step-by-step guide to planning a room addition: setbacks and permits, footing depth, tying into the existing house, and which phases a DIYer can own.