[Gwythaint]

@Michele, I was already looking at independent income! @Varyon, making the perk leveled to represent improvements is exactly what I was thinking!
In game, the local beauracracy is happy to give deeds (for points) to PC's to prevent further dilapidation of a neighborhood where there were a number of cult murders, and too many vacant homes to support local, taxable businesses. Additionally, a cluster of druids are seeking to build a park in an area where there was a street collapse (spell failure opened a temporary gate in the dungeon below it); the street collapse directly abuts the PC's properties.
Revitalization in this city is an initiative due to massive population loss from plague; the beauracracy cannot flourish without some kind of revenue from taxation, so settlement is encouraged.