Also, when do I tell the bank I am selling so I can pay back the mortgage?
Your solicitor will look after this as part of the conveyancing process.
I would recommend picking a solicitor before you put the apartment up for sale.
And are there usually extra fees associated with repayment of mortgage?
Is it on a fixed or variable rate?
If fixed, there might be a break fee.
Otherwise the only charge is a fee for taking up the title deeds - usually about 63 euro.
Could someone assist me in breaking down the costs associated with the sale - Eg Are estate agents fees negotiable? And apart from solicitor is there anything else I need to factor in
It depends on when the apartment was purchased. If it was never registered with land registry, then you will need a plan of the apartment block showing which is yours, etc. This is something that the OMC will look after I understand. You will also need copies of the OMCs annual accounts, etc. If you pick a good solicitor, they'll provide you a list of all of these 3rd party costs that they will need, with an estimate.
In terms of other costs, I'd budget a few hundred to get a skip to 'declutter', always helps to sell a property. And take advice from EA on whether a quick paint to freshen it up might make it more attractive to sell, or if there are any other small maintenance jobs that need to be looked at. You want to appeal to as many potential buyers as possible. You'd be surprised how much people can be put off by something small like a dripping tap, or a cupboard door off it's hinges!
EA fees are negotiable as mentioned. I'd recommend getting 'professional' photos taken; this will be extra, and arranged via estate agent. There's nothing more off putting that a listing on a website where the photos were obviously taken on the EAs mobile phone. From memory when I sold I think the 'marketing' budget was about 800, that included photos, listings on websites, 'for sale' sign outside, and the printed brochures. Your EA will have a standard 'menu' for you to choose from.
If you go with an EA that has recent success selling apartments in the same block, they might already have potential buyers on their books.