Building works - Not able to use my rented space

I live in a 1 bed flat with quite a large terrace/balcony area. I can’t find the exact dimensions, but the area of the balcony is a significant percentage of the total area of the property. I received a forwarded email from my landlord (he owns the property) that he received today, and immediately forwarded it to me. The email comes from the surveyors that are carrying out work on the whole building, giving me 4 days notice that my balcony needs to be cleared so they can install temporary scaffolding. Because of the size of this space, I have filled it with plants, planters, and an outdoor sofa, a lot of which is quite heavy. I don’t have space inside to store all of these things, nor do I have any other storage areas outside of the flat. The timescale for installing is 2 weeks, but they have not said an end date, only ‘once work has been completed’. Whilst the work is going on, they have said that I will not be able to access my balcony. Any idea on what I can do? I have emailed the surveyors myself asking them to elaborate, but I have yet to hear back. Any advise would be a huge help, Thanks!