Sounds a bit condescending, if it was "in the bag" as you say I would have stated permission had been granted by my landlord and I needed to finalise building regulations/planning permission.
My apologies I'm not being condescending in the slightest, I'd read the thread bit by bit and, let's say, lost track of where you are with it. I thought you'd spoken with the HA and got 'aproval in principal' and were having to do the follow up paper work.
As someone who works for several significant housing associations, mostly putting right what their tenants have messed up, I'm in a fairly good position to offer my opinions based on my experiences with them.
Surely this is a clause you would have in your tenancy agreement and the need for additional monies from your tenant is taking the biscuit. I'm talking about a housing society here, not someone with a few buy to lets.
Yes of course it's in the clauses but that's based on repairing the damage, not rebuilding alterations. At the end of the day my insurance will go some way towards repairs but there is no way they will cover this sort of thing. I don't want the expense of reinstating fire routes either. If I were to give a tenant permission to do this sort of alteration there would be very little chance of reclaiming costs from them when they leave. I would ensure they pay an additional, refundable and ringfenced, deposit to cover the repair.
I make no apology for only owning a few buy to lets.
The windows are the same upstairs, so the whole escape issue is the same throughout house.
In that case call you HA and ask them to put it right, you should have at least one additional escape route and the window installers will have known that for a rental property.
I always ask for
all of the upstairs windows to be escape windows. The additional cost has only been about £5 per opener and well worth it for peace of mind.
Please don't criticise when you are offered some very sensible advice from people with a wealth of experience to draw upon, I know you were only asking about the switch so I'll apologise for pointing out some of the other aspects that you are likely to encounter.
Oh and by the way large HA's are far more likely to refuse the permission or add the additional clauses than someone with a few buy to lets.
I wish you all the best with your project, genuinely.