Should I be afraid on being single again?

So im 28y and been in a relationship with this girl now for over 2 years now. She is amazing in many ways, super loyal and my main reason for choosing her is that she would be an amazing mother. She is ready for kids, and i am aswell only that i wanna buy a house first. We have been looking for a house now for some months and we got this very good deal with a building company. Its not the biggest house but its new and would be safe for our economy for many years to come.. problem is that we can't come to an agreement, she isn't interested in the new house.. she have dreamed on pinterest for so many years before she met me so she has the dream to renovate. And has all these pictures she wants to make our future home but i dont agree to buy some old crappy house to spend my next 10-15years renovating... Because i know im the one who have to do 90% of the work.. she is so back and forth and she admits constantly that she dont know what she wants and she doesn't understand the building consepts when im explaining.. we have had our ups and downs like every relationship, and now i feel this is gonna be the end of us if we can't find an agreement. and im afraid of becoming a single 28y man who wants a family and house in the next coming years and i wouldn't be able to buy a house alone within the next 5 years probably...
Should I be afraid on being single again?
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