All of RonJohn's reasons to say no are extremely valid. There are also two more.

First, the cost of a mortgage is not the only cost of owning a house. You have to pay taxes, utilities, repairs, maintenence, insurance. Those are almost always hundreds of dollars a month, and an unlucky break like a leaking roof can land you with a bill for many thousands of dollars.

Second owning a house is a long term thing. If you find you have to sell in a year or two, the cost of making the sales can be many thousands of dollars, and wipe out all the 'savings' you made from owning rather than renting.

I would suggest a different approach, although it depends very much on your circumstances and doesn't apply to everybody. If there is someone you know who has money to spare and is concerned for your welfare (your mention of a family that doesn't want you to work for 'academic reason' leads me to believe that might be the case) see if they are prepared to buy a house and rent it to you. I've known families do that when their children became students. This isn't necessarily charity. If rents are high compared to house prices, owning a house and renting it out can be very profitable, and half the battle with renting a house is finding a tenant who will pay rent and not damage the house. Presumably you would qualify. You could also find fellow-students who you know to share the rent cost.

All of RonJohn's reasons to say no are extremely valid. There are also two more.

First, the cost of a mortgage is not the only cost of owning a house. You have to pay taxes, utilities, repairs, maintenence, insurance. Those are almost always hundreds of dollars a month, and an unlucky break like a leaking roof can land you with a bill for many thousands of dollars.

Second owning a house is a long term thing. If you find you have to sell in a year or two, the cost of making the sale can be many thousands of dollars, and wipe out all the 'savings' you made from owning rather than renting.

I would suggest a different approach, although it depends very much on your circumstances and doesn't apply to everybody. If there is someone you know who has money to spare and is concerned for your welfare (your mention of a family that doesn't want you to work for 'academic reason' leads me to believe that might be the case) see if they are prepared to buy a house and rent it to you. I've known families do that when their children became students. This isn't necessarily charity. If rents are high compared to house prices, owning a house and renting it out can be very profitable, and half the battle with renting a house is finding a tenant who will pay rent and not damage the house. Presumably you would qualify. You could also find fellow-students who you know to share the rent cost.