Combi boiler replacement
£1,800–£3,200
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Budget combi (supply & fit)£1,800–£2,200
Mid range combi£2,200–£2,800
Premium / Worcester, Vaillant£2,800–£3,500
Typical time1 full day
Like-for-like replacement in same location. Relocating the boiler adds £300–£600. Flue extension, magnetic filter and inhibitor typically included in quoted price.
New combi boiler install (from scratch)
£2,400–£4,500
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Converting from back boiler£2,400–£3,500
New build / extension£2,800–£4,500
Typical time1.5–2 days
Includes all pipework, flue, programmer, room thermostat and gas connection. Removal of old system adds half a day.
Radiator installation
£150–£400
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Replace existing (like for like)£150–£220
New rad, existing pipework£200–£300
New rad, new pipework run£300–£450
Double panel rads cost a little more to supply. Downstairs extension or conservatory runs add pipework cost. Always flush system after adding new rads.
Full bathroom refit (plumbing only)
£900–£1,800
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Labour only, 3-piece suite£900–£1,200
With some rerouting£1,200–£1,800
Typical time2–3 days
Plumbing only — tiling, electrics and decoration separate. Includes bath, basin, WC, waste connections and isolation valves. Wet room tanking adds 1 day.
Toilet replacement
£120–£220
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Close-coupled, labour only£120–£180
Wall-hung (frame already fitted)£180–£280
Wall-hung (new frame & fit)£400–£650
Supply and fit price depends hugely on whether customer supplies the toilet or you do. Agree upfront on supply.
Shower installation
£200–£600
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Electric shower (labour only)£120–£200
Mixer shower over bath£200–£320
Shower enclosure & tray (full)£350–£600
Electric showers require an electrician for the supply. Always worth packaging this up with an electrical partner to offer the client a complete job.
Outdoor tap installation
£100–£200
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Standard external tap£100–£160
With double-check valve£140–£200
Water regs require a double-check valve on outdoor taps to prevent backflow. Many customers don't know this — worth mentioning upfront.
Power flush (central heating)
£350–£600
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Up to 10 radiators£350–£450
11–15 radiators£450–£600
Typical timeFull day
Required before fitting a new boiler on an old system. Many boiler warranties are void without it. Always quote as a separate line item.
Day rate — 1 plumber
£350–£480
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Callout / first hour£80–£130
Half day (up to 4hrs)£180–£260
Full day£350–£480
Gas Safe registered plumbers command a small premium over non-gas plumbers. Emergency callout rates (evenings/weekends) typically run 1.5–2x day rate.