The cost can sometimes be difficult to quote up front as it depends what's found, how long it takes to repair and what equipment is needed.
Which? conducted a survey in 2012 and came up with the following useful table.
NB: All of these prices include labour and materials but exclude VAT.
|Job||Details||Typical price quoted||Price range||Typical time to complete job|
|Survey conducted in July 2012|
|Replace light fitting||Remove standard rose and replace with new light fitting supplied by customer.||£37||£30-£50||0.5-1 hour|
|Perform an electrical inspection report||Safety check on electrical wiring in standard three-bed semi detached house.||£150||£120-£180||4–8 hours|
|Replace consumer unit||Supply and fit a new consumer unit for standard three-bed semi-detached house.||£350||£300-£433||0.5-1 day|
|Install electric shower||Supply and fit an 8.5kw electric shower.||£300||£240-£380||0.5-1 day|
|Install a light in loft||Supply and fit light in loft with switch outside loft hatch. Assuming no light already exists.||£95||£70-£140||2–3 hours|
|Replace old strip lighting in kitchen with LED downlighters||n/a||£330||£250-£400||5–8 hours|
|Install an outdoor power socket||Fit a double socket on an external wall.||£100||£79-£125||1-3 hours|
|Install two extra double sockets in lounge||Supply and fit two double sockets (white).||£120||£100-£160||2–4 hours|
|Replace standard light switch with a dimmer switch||n/a||£50||£35-£60||0.5-1 hour|
|Fit an electric cooker||Fit a single fan electric oven. Assuming all power is already in place. Customer supplying oven.||£45||£35-£60||1 hour|
|Repair a damaged power cable on vacuum cleaner or other similar appliance||n/a||£40||£30-£50||0.5-1 hour|
|Install an external security light||Supply and fit an external security light – movement sensitive.||£100||£79-£130||1–3 hours (dependent on how close light is to electrical supply and length of cable required)|
|Completely rewire average two-bed terraced house||Remove old wires and fittings, install new wiring and fittings – six rooms including kitchen and bathroom.||£2,500||£2,183-£3,000||5–8 days|
|Completely rewire average three-bed semi-detached house||Remove old wires and fittings, install new wiring and fittings - eight rooms including kitchen and bathroom.||£3,200||£2,838-£4,000||6–10 days|
|Completely rewire average four-bed detached house||Remove old wires and fittings, install new wiring and fittings - 10 rooms including kitchen and two bathrooms.||£4,000||£3,400-£5,000||10–15 days