I may not have explained myself clearly, so I apologize if there was any confusion.You are absolutely right that to carry out tangible commercial activities in Spain, such as real estate projects, it is necessary to establish an SL (Sociedad Limitada).

Of course when doing the 1031 exchange your basis will carry forward into your replacement property.Where you have a potential issue is establishing your intent to hold those properties but immediately selling one or more them as soon as you have them ready. 

The reality is the opposite - if it's not in writing then the PMC doesn't have to provide the service or can charge extra for it!

These should be reflected in the purchase price or negotiated as part of the terms, such as the seller carrying some of the renovation burden.Use seller financing to your advantage by proposing a price closer to $225,000-$250,000 with terms such as 20% down, a low interest rate (4-5%), or interest-only payments for 3-5 years, with a balloon payment once renovations are complete and cash flow stabilizes.If the seller is firm on price, consider negotiating higher down payment terms to reduce the financed amount, paired with interest-only terms or a price reduction tied to renovation milestones.Key questions to address include the condition of the septic system, which can be a significant expense if it fails.

The pet fee or deposit for the move in of 2 cats (you did charge one, I hope) should have just about covered the extra anyway.

Anyways, on my latest project, the title came back yesterday and revealed two extra parcels of land deeded to the seller under the property I was under contract for.

The reality is the opposite - if it's not in writing then the PMC doesn't have to provide the service or can charge extra for it!

Any taxes not owed, a seller merely file a tax return with the state, just like any other tax returns filed for extra taxes a government has with held. 

Any ideas on what I could turn it into to help generate some extra profit?

Does anyone know of any real estate brokers in California that offers the MLS-only membership as I don't want to pay all the extra fees to be a part of CAR/NAR.