that declaration also needs to be signed on that particular day or can it be done beforehand.
Beforehand is fine, as long as its within a reasonable timeframe, that week say.
Also wondering if there are 3 apartments in the one house do I need 3 individual declarations or will 1 which is copied suffice.
If you have three tenants, I would serve notice to each tenant.
Maybe my best bet is to email rtb.
They'll just copy and paste from the website at best.
In the meantime anyone else who has done the statutory declaring can you advise please.
IANAL
The above is the approach I have taken.
My bit of advice is to add at least two more weeks to your notice period; use several methods of delivery if you think your tenants will act the maggot.
It is courtesy in my view to speak to your tenants first & let them know what is happening, that its 6 months notice & that the paper work will follow. At the end of the day, they are losing their home, a bit of empathy will go a long way.
Yes your tenants could bring a complaint to the RTB, but unless you've acted egregiously the worst outcome is that the RTB will tell you your notice was incorrect. In which case you correct it & start again.
Whilst that will cost you time; in the current market your sale price will likely have increased.
The biggest risk, in my view, is that your tenants will stop paying the rent during the notice period. So keep up your checks & inspection routine.
IANAL