Replace a toilet seat
Save £40–80 in 20 mins — no plumber needed
Most people call a plumber for this. You probably don't need to.
Last updated: March 2025
Only basic tools needed — most homes already have them.
Before you start
This is one of the easiest jobs in the house. No tools needed beyond a screwdriver for most modern seats.
Measure your toilet pan before buying a replacement — pan shapes vary (round, D-shape, square-front). Check the distance between the hinge bolt holes too.
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Tools & materials
- ✓Screwdriver (cross-head)— most hinge bolts use cross-head fixings
- ✓Adjustable spanner or pliers— to grip the nut under the pan if needed
- !Replacement toilet seat— buy — measure your pan first
Want everything in one go?
Prices shown on retailer sites. Always check current pricing before purchasing.
Remove the old seat
Open the hinge covers on top of the seat (they flip up or prise off). Unscrew the bolts — usually cross-head screws on top, plastic wing-nuts underneath. Lift the old seat off.
Most people get this done in under 5 minutes.
Where beginners go wrong
Buying a seat without measuring — pan hole spacing and pan shape vary between manufacturers.
Overtightening the wing-nuts — this can crack the ceramic, which is an expensive mistake.
Not checking the seat is centred before tightening — it looks obviously wrong once fitted.
Stop and call a plumber if...
There are cracks in the ceramic pan around the bolt holes
The pan fixing points are broken and cannot hold bolts
Cost breakdown
Recommended starter kit
Five tools that cover most home repairs.
- →Adjustable spannerAmazon·Screwfix
- →Screwdriver setAmazon·Screwfix
- →PTFE tapeAmazon·Screwfix
- →Spirit levelAmazon·Screwfix
- →Tape measureAmazon·Screwfix
Want everything in one go? Get it on Amazon
What you just learned
You can now fit any standard toilet seat and understand pan sizing. This transfers to replacing the cistern lid, fitting a bidet seat, and other bathroom fitting work.
What this unlocks
You can now tackle other bathroom fitting tasks: replacing a towel rail, fitting a toilet roll holder, or replacing a basin pop-up plug mechanism.
Most people would pay a tradesperson for this.
⚠️ Watch out if you rent
Landlords are responsible for providing a working toilet seat. Report a broken seat in writing. Replacing it yourself is usually fine — but keep the receipt and tell your landlord, so it is not deducted from your deposit.