I have experience of rewiring for a council, only six weeks coz they sacked me for being too slow.
There is a vast difference between council house rewiring and private market house requiring.
Firstly, the private customer is begrudgingly spending £2000+ (or should be) of their money.
Council tenants have no choice and are not paying.
In a council require everything is specified, ie number and type of circuits, number of sockets for which rooms and what lighting control where.
In a tenanted council house there's no choice, they get what they get there's very little room for change or options.
With the best intention in the world private customers always change their mind half way through or suddenly remember they want an extra socket or two way lighting when you clearly highlighted this at the design/quotation stage.
Then there's the whole environment, are you comfortable with going in to another persons home and just smashing through to get the job done a s a ****ing p to "get it done" using quotes such as "that'll do" me personally, I don't think it's acceptable to go in and do the job as quickly as possible with no after thought for issues which will affect the long term quality of the install.
And that's why I win less rewires.
For me personally a week on my own would be impossible, with a good mate, further experience and good equipmemt/strategies yes, with another spark.
I did a three bed with large sun room extension, fully chased, 26 double sockets, 2 single sockets, (one in attic) an aerial install with three outlets, 32a kitchen rad, x2 ring circuits, x2 lighting circuits with three two way and 11 one way, three smokes, outside lights x 2, 16a rad for combi, new bonding and earthing, new CU, hard wired door bell, new cooker circuit in three weeks on my tod.
Chasing took a day in the kitchen and sun room as it was all rendered and like granite!!
A learning curve and pretty hard week, 21 days in total. That's to a very high standard.
Good luck