Thanks JMBroad...you answered one of my questions as I was typing it
No Problem - welcome to the forums
As for your other question: INCC was always the standard way of working in Brazil as mortgages weren't available to the general population. On the 15th of October 2007, the first 25 year mortgage was introduced and as part of the PAC (Brazilian growth plan) banks started lowering interest rates, extending the duration of mortgages and making them more widely available to the population.
That has now (18 months later) resulted in mortgages for 30 years being available at as low as 9% interest per annum on some properties - which makes the INCC option mostly (but not totally) outdated and irrelevant. Today it is more important for developers to have their development approved for mortgages by one of the local banks.
INCC is still a viable option when the buyer needs financing but can't get a local mortgage (like foreigners for example). However most foreigners would object to paying that much interest.