Jack and pack piles

Hi, does anyone have any experience with jack and packing piles on an old house? We have a 100+ year old house and the floor has noticeably shifted at the front and has pockets of springiness in places. The earthquakes have made a big difference but typically EQC are pulling the historical card. Can anyone give me a rough idea of cost at all or advice before I start ringing round tomorrow?

If there's enough room to crawl underneath it should be an easy job if there are concrete piles in the ground already. Then it's just a matter of jacking up and cutting and putting in new jack studs. If a large part of the house has sunk you will need more jacks!
There are very likely to be all kinds of new rules these days.

Could find almost anything under there.

Simplest way is to disconnect everything & jack the house up to redo all the piles.
Doing it on the ground is a very time consuming & messy job but is easier in regards to permits etc

Either way is likely to require some redecoration inside once the floor has been leveled correctly.
The big advantages of lifting the house is a faster & more accurate job with ALL the piles replaced, plus you could have slightly taller piles put in if you want or extra piles if needed.

Might even be simpler to run some steel beams under it & lift it on to those, (on to an outside ring of piles) you can do a deck at the same time.

Disadvantage is that you have to live somewhere else while the job is done & council permits etc could be a nightmare.

This next bit needs clarifying with your local council .

Councils will let you do all sorts of things to a dwelling without too much hassle but the moment you "Move" a house (even just lifting it for repairs) & disconnect services, despite the fact you reconnect to the same exact connection points again, they try to treat it as a new build/ relocated building situation.

Eg: I have seen several buildings that have been gutted by fire & it was cheaper to rip out & replace the entire inside of the shell including the roof , floor, walls & windows, rather then demolish & build a new dwelling on the same exact spot.

Seen the same thing with a few commercial buildings as well

BUT, as I said above, check with your local council as to how each way of doing it will effect/ cost you