Buying an apartment  requires careful planning and research. Here are some steps and tips that might help you:

Hire a reputable real estate lawyer to assist you with the legal aspects of the transaction. A title search on the property is very important as many areas are not registered.

Negotiate a price with the seller and sign a sale agreement as a conditional preliminary contract. You will need to pay a deposit of at least 10% of the purchase price (or such other amount as may be agreed by both parties) upon signing.

Conduct due diligence on the property and the seller to ensure there are no hidden issues or liabilities. Your lawyer can help you with this process

Pay the full balance of the purchase price in exchange for the completion documents from the seller on the completion date. The completion period can vary depending on whether you are buying a completed property (ready for occupation), land or an off-plan property.

Arrange for stamp duty assessment by a government valuer and stamping of transfer documents by your lawyer. Stamp duty rates vary.

Register your ownership of the property at the relevant land registry office.

I hope this information helps you make an informed decision about buying an apartment in Kenya. Good luck!