Whether a bungalow is more expensive or cheaper than a gable roof single-family house is purely a matter of interpretation. Before we decided on a bungalow, we had planned to build a gable roof single-family house. At that time a builder said: 1.5 or 2 stories is more expensive than a bungalow because almost all trades have to work on 2 floors. Now we want to build a bungalow, another builder says: a bungalow is expensive because ... justification .... Conclusion: you get charged more or ripped off no matter what you build. you want to go to an architect, that’s good so you first get an orientation before you find a plot of land. But I would first collect as much information myself, for example builders mostly advise without obligation. With appointments and talks with builders or architects, if you expect a non-binding consultation, please make that clear and explicit at the beginning of the conversation, and if it has to be paid, ask for the prices. As soon as you ask an architect something and get a factual answer, whether immediately and orally, by phone or by mail and email, that means you have commissioned him. Just for info to avoid unpleasant surprises ;-).