Contoversial - but the only way to be 100% sure etc in an inspection is to test everything - which is all sockets all lights floorboards up, knowing the routing of concealed wires etc. Cheaper to rip out and start again.
A high percentage of the system can be hit quickly at the CU with continuity/insulation/RCD/Bonding/Earthing. Remaining circuits Zs can be easy - though always a guess/compromise on the end of line with lighting. I don't test every light. A Zs check on all sockets and visual on accessories and exposed wiring is not that time consuming. For a 3/4 bed house I reckon on 2.5/3hours testing with 45-60 write up. £100 max. This is with results sheet correctly filled out and sufficient tests to give a high degree of confidence in the system. Also no inflation of C3 to C2 and C2 to C1 which seems to be the way of things down here. What am I missing out?
i must be too slow and expensive then.
I like to check rings circuit continuity and R1+R2 circuits. From your description i think i might be a lot more thorough. If i am testing a circuit i will get the result however long it takes, i dont compromise to race against the clock.
8-10 circuits 30-40 mins per circuit is getting over 4 hours without the paperwork.
for me it can take a while sometimes to move furniture, wait for customer to move items, dogs, children etc. Other day it took me 15 mins to move a fridge so i could unplug it from a circuit.
sometimes replacing one accessory can take a while due to location, state of how it was originally installed , correcting things along the way like sleeving, exposed conductor, twisted wires.
some places have complicated light fittings throughout the entire house.
So to earn your days money would you book 2 in one day?
what if the first takes longer? do you then get to the 2nd late? or do it another day?
you say 3 hours to test, if 9 circuits then 20 mins to test each circuit.
Even if you do complete one in 4 hours, time to travel to the next job does not leave a lot of time left in the day.
Delivering value at a fair price - arguably it is a race! If the house and CU are in good condition then 4 hours is certainly feasible.
What is your definition of properly?
100% testing is the only proper test - and even then problems can be created by re-installing.
So 50%? 10%? Check consealed cables? Go in the loft? It's about a reasonable degree of confidence that all is safe.
A very high degree of confidence can be gained within 4 hours if you work consistently - and you can do that with respect thank you very much as that doesn't cost anything!
Taking care and and respecting someones property can cost time, a lot of time.
You can keep the £100 customers, I will stick to the ones paying £200-300