You have made a grave mistake in not specifically asking about Social Housing provision on a new housing development.
This is just one of the many
QUESTIONS all potential new home buyers should ask before they reserve.
Virtually ALL new developments with homes offered for private (owner-occupied) sale will have a planning requirement for social housing.
In recent times the social houinsg requirement is inter-mingled with private sale homes so it can be possible to have a tenant on housng benefit living next door to you.
As you discovered these homes do indeed tend to be the ones that are all "Sold" and the sales advisors tend to not be that open about who they are "sold" to!
Having said this, Persimmon should have made it crystal clear on the site plan in the sales brochure where exactly, the social and/or affrodable housing is.
It would also appear that the sales advisor knowlingly did not disclose thie information to you, which both he/she and Persimmon are legally required to do under the:
Consumer Protection from Unfair Trading Regulations 2008 and the Business Protection from Misleading Marketing Regulations 2008.
In addition, the Property Misdescriptions Act 1992 also requires house builders (and others) to disclose all known material facts about a property offered for sale.
You are right, it will most definitely affect any future sale price -(assuming you even get offers!).
It is quite common to see up to 30% of homes back on the market just 6 months after a develepment is completed and it can be obvious which homes are the social housing too.
You need to take this up with Persimmon straight away. The CEO is
mike.farley@persimmonhomes.com
I would expect the only acceptable solution for you would be to get your money back together will all moving and purchasing expenses reinbursed.
You should also report this breach of the regulations to your local trading standards office.