- Trimmer
- Truss
- Tub trap
- Turnkey
- Turpentine
- UL (Underwriters' Laboratories)
- Undercoat
- Underground plumbing
- Underlayment
- Union
- Utility easement
- Valley flashing
- Valley
- Valuation
- Valuation fee
- Vapor barrier
- Variable rate
- Veneer
- Vent
- Vermiculite
- Veterans Administration (VA)
- Visqueen
- Void
- Voltage
- W C
- Wafer board
- Walk Through
- Wall out
- Warping
- Warranty
- Waste pipe and vent
- Water board
- Water closet
- Water meter pit (or vault)
- Water table
- Water tap
- Water repellent preservative
- Weatherization
- Weatherstrip
- Weep holes