I agree with you—the pre-made units available on the market are of poor quality, and building it yourself is much better, but building it yourself requires the following:

1- Land ready for construction.

2- The construction should not be financed through a land developer or a bank loan—meaning a mortgage where you buy land and build on it.

3- Ensure that the funds you have are sufficient to cover the construction costs so that you do not encounter delays in construction, which is a major problem.

5- If you encounter difficulties, you must have a source of liquidity to complete the construction.

6- The problem is that if you default, the bank will foreclose on the land and your salary will be garnished to cover the installments even though you haven’t moved in yet. If you fail to make payments, the land will be sold at auction. The problem is that if you’re renting, you’ll be paying both rent and the mortgage installment.

However, when you buy a ready-to-move-in unit, the financing amount is guaranteed, so you buy the house and move in immediately.

Best regards

‏ @mnfr10