Our House

Hi, I hate to ask for help. We have been informed that the house we currently rent is going up for sale. We have been given the option to buy it luckily but we would need to find the deposit amount in around 4 weeks time to be able to secure it. The landlord is currently looking at selling to us or to our local council which will not guarantee us a place here once that has went through. We have looked at all our options on how to make some money in this time so this is a last resort. I know this is a lot to ask and I appreciate anyone who helps.