In summary: it has to be win/win Are the operator's profits aligned with yours, the investors i.e. usually at the end on exit? Or are they lining their pockets upfront regardless of asset performance?

As much as I like appraisals, I must admit I love an experience realtor. They not only give you more comps than an appraiser, they know what's going on in the neighborhood. They know what people are looking for in houses in their area. But here again, you must tell the real estate in Marbella. not to give you a number just to make you happy. You want a price that the house will sell for in a reasonable time period.
Ask the real estate development. investors you have met and spoken to what you could do to help them. Many investors pay up to $1000 for each property you find that they buy. Just start by asking friends and family if they know of anyone who needs help and get that number. Call that person and check to see if they need to sell, if so, connect them to your group of investors and follow up.
Second real estate company or service. get a yard sign. People driving through neighborhoods they like will often see a sign and then note the address to search on MLS later. If you don't have a yard sign then people won't know your home is for sale.
As a professional developer, you will be doing this at the most fundamental level as it is essential to your success in this business! You will learn about and become very familiar with Qualitative, Quantitative research and market analysis.
The benalus real estate next best way to keep more cash in your pocket when selling real estate is to find a home buyer yourself and skip paying real estate commissions to an agent. This avenue is not for all home sellers. Real estate agents exist because they provide value and service. However if you have extra time, energy and are up to a challenge then selling your home for sale by owner could save you big dollars at the closing table.
Remember that investing in real estate property may cost money but with hard work and a little bit of luck, you may be able to recover you investment before you even know it. After that, everything is just profit.