Dog Daycare centre without planning permission.

[Dr Strangelove]

Some excellent ideas on this thread. OP would be well advised to pursue multiple avenues at the same time:

1. Local authority noise complaint
2. Local authority change of use
3. Civil legal route
4. Animal welfare

All of the above operate largely independently of each other. Not all may succeed but one could be enough to shut this down.

Keep written records of absolutely everything- something like an email to self every day with a record of noise may well have evidential value.

 

[T McGibney]

OP would be well advised to pursue multiple avenues at the same time:
....
4. Animal welfare

Unless the OP has specific animal welfare concerns - and they haven't mentioned any - they should try to avoid dragging animal welfare workers into a possibly fruitless fishing expedition here.

Animal welfare resources in this country are very tightly stretched as it is, evidenced by at least one absolute horror story relating to dogs, which was covered by the media relatively recently, and which continued for longer than it should have because the local authority in question lacked sufficient resources to tackle it. If staff are being diverted to situations where there are no specific welfare concerns, this problem will only worsen.

Going by their description of the situation, the OP has multiple other avenues to pursue without this. Best wishes to them.

 

[llgon]

it's a huge site, just a huge site in the middle of lots of homes.

What does the site currently have planning permission for and was this in place before the homes were built?

This is likely to have a significant influence on the current application.