The problem DeRent solves

In the real world, often we get to hear the news that a particular landlord increased house rent without prior notice or unduly before the estimated time, tenant barging into the property and claiming to be their own etc. In either case, the sufferer has to go through tedious court procedures as well as harassment from the wrong-doer. The aim of DeRent is to pave the first step towards solving these issues with the help of smart contracts.
Why blockchain?
Because it is immutable and distributed, thus ensuring security. Fast and efficient mode of maintaining the contractual relationship between the landlord and the tenant.

Challenges we ran into

Initially, it was difficult to code down the exact issues faced in the real world. Eventually, with the help of available resources over the internet, this issue could be resolved. We had to understand the exact laws of different countries that can protect both the landlord as well as the tenant.