As a lawyer, I can provide you with some basic information about purchasing real estate in Egypt. If you are considering buying a Blue Tree New Cairo apartment, there are a few legal and practical issues that you should be aware of.

First of all, it is important to verify the ownership of the property and ensure that the seller has the legal right to sell it. This can be done by reviewing the property's title deed and other relevant documents. You may want to hire a real estate lawyer or agent to assist you in this process.

You should also be aware of any restrictions or conditions on the property, such as zoning regulations or homeowner association rules. It is important to fully understand these restrictions before signing a purchase agreement.

When it comes to financing your purchase, you may need to obtain a mortgage from a local bank or financial institution. It is important to shop around for the best rates and terms, and to carefully review the terms of any loan agreements before signing.

Once you have completed your due diligence and secured financing, you can move forward with purchasing the Blue Tree New Cairo apartment. Depending on the terms of the purchase agreement, you may need to pay a deposit or down payment, and you will likely need to work with a real estate agent or broker to finalize the transaction.

Overall, purchasing real estate in Egypt can be a complex process, but with the right legal and professional guidance, you can make an informed decision about buying a Blue Tree New Cairo apartment.