You buy property worth from $180,000
The property must remain in your ownership for all 4 years
Within 3–6 months you receive a 4-year residence permit
Residence status must be maintained: you need to spend at least 14 days in the country over any 2-year period
After that you may apply for naturalisation, provided that:
RESIDENCE PERMIT IN BRAZIL
How to obtain residence — and what comes after