The goal of saving about 40,000 in equity in 4 years makes me a bit suspicious.
So, with a monthly income of €5,500, you should be able to save €2,000 or more.
That means €50,000 in 2 years is no problem.
You also have no idea about building.
I always advise young people the following. Buy a suitable plot immediately and pay for it with equity or a small loan.
Location and size should fit.
Then save a little more and build in 3 - 4 years. You can already start, for example, by planting little trees or building a fence.
Those who have some time to build save a lot of money, a great deal of money.
I did it that way too and built without a penny of loan.
Therefore, today I only work 25 hours a week and enjoy my life.
A small example.
Those who build with 36 cm Poroton plan bricks can do a lot by themselves.
You don’t need expensive Styrofoam external insulation, which is rubbish anyway.
Lime cement plaster is cheap and is worlds better.
Homeowners are always amazed when I tell them how much the stones for a whole house cost. €5,000 for an entire house.
A little adhesive, a little mortar, and a few lintels. Any questions?
Roof tiles cost around €1,000 glazed for an entire roof.
You can get windows in good Schüco quality also cheaply. But as I said, it takes time and patience.
You can build expensively but you don’t have to.
I know very good solid construction companies in the WÜ / SW area that also build inexpensively in top quality.
But as I said, first buy a plot.