Extensions Glossary: A-Z of Terms Every Homeowner Should Know

Category: Extensions & Structural

Author: Central Scotland Tradesmen

Published: 2026-03-15

A comprehensive A-Z glossary of building extension terms explained in plain English. Understand what your extension builders are talking about before, during and after the job.

Use the interactive A-Z filter below to look up any extension building term you don't understand. This glossary is written for homeowners, not tradesmen, so every definition is in plain English.