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Foundations, damp & lofts

Structural work: foundation repair and underpinning, damp and basement waterproofing, and turning the loft or attic into living space.

Cost guides in this topic

Foundation repair$20,000$15,600 – $26,000 Foundation crack repair$500$390 – $650 Basement waterproofing$8,500$6,650 – $11,100 Attic conversion$35,000$27,300 – $45,500

Articles

Foundation repair

Guide

Foundation pier types and costs: slab, push and helical piers

September 26, 2026 · 4 min read