If you want to get on the property ladder now whilst living with parents...
1. Ask your parents if they can give you a few grand.
2. Go to a few reputable mortgage lenders and ask how much they will lend you based on your available funds and earnings.
3. Look for a property, house or flat, in that price range that you like even if its in a dodgy area.
4. Put a deposit on it and get a mortgage.
5. Rent it out so it pays itself and if you get more rent than the monthly mortgage payment put the remainder into savings.
6. You could also pay off some of mortgage early if you save a few grand whilst living with parents.
A few years later....
6. Property you bought should increase in value.
7. Hopefully grandma is still alive and well at this stage so don't take it for granted that you will be buying her house when you're 30ish
8. Your wage may have increased by then or you have a different job which pays more...you don't know as yet.
9. You may have met the love of your life and want to live together.
10. Get tenants to leave, move into your property and put up with dodge neighborhood for a few years.
11. By this time you would've been on the property ladder a few years and can look to upscale with or without a partner.
This is what I did (without a partner) and I now live in a nice semi in a cul de sac in a nice area. My previous house was in a rough area but managed to live there for nearly 25 years. And my earnings aren't that great either but I manage.