I am aware about the importance of accommodation for outcome of dependent visa by browsing similar threads.
I am wondering whether we have any way out to avoid renting a flat.... at the time of visa application

it would be around 3 months time for my fiancee to join me here.
now I am in shared accommodation.
This sounds wacky idea... but still a possibility
Would ask for post dated visa by showing hotel booking for us for worst case. Then move to flat at the time my spouse is joining me.
I have other requirements like bank statements, payslips, offer letter etc.
Your input is appreciated.