This covers most of the NPCs that the PCs will come across. Just about every Level-1 NPC class NPC commoner fall into the 3-10 gp/month cost of living range - which equates to 1-3 sp/day. However, remember this section covers a range of different skills and incomes, in general terms, the lower the skill set, the lower the quality of the home, and the smaller the settlement, the lower the quality of the home. The floor plans and descriptions are examples of houses at this standard, be inventive - if it suits you.

A skilled Warrior who lives in a Thorpe, might have the same (or lower) standard of living that an unskilled commoner who lives in a village.

Building Description	Basic floor plan
The Hut and Shack are simple buildings, known around the world, which appear just about everywhere from a city's favelas to the wildest countryside. They can be larger, and hold more people, but I probably wouldn't go past 5x residents and the area of a common room. They make reasonable accommodation, especially when there is a chance that your home will be destroyed, and you would have to rebuild. Most unskilled commoners are able to build a home of this type.
The Creel Cottage is a simple one-roomed house based on the PF Downtime Common Room. NPCs on the 3gp/month standard of living are used to this sort of shared accommodation. It is an open building, tall enough that a second story can be installed between the rafters and the thatch later. While smaller than some, it is based on RL buildings: Saxon Long House; Creel Houses; and Black Houses. It has a fire pit in the middle, for cooking while one end is used as a living area and the other for storage. There is no chimney, smoke filters away through the thatched roof. Once the frame is up, an unskilled commoner will be able to complete the build.
Workers Cottages are more common close to the larger settlements. You might find a pair, occasionally, in a Hamlet, but that is probably a sign that it expects to grow. While it appears tiny by modern standards there are precedences for small two-roomed homes that accommodate a small working family. Based in a lodging and a garden, split between two homes, Workers Cottages always come in pairs, and are a decent way for a richer character to invest in rented accommodation, they are often the home of skilled workers, with the home tied to as local business. Cooking is done over a brazier, and there is a bit of privacy - although not all that much. Needs input from a skilled builder to start with, but can be completed by unskilled commoners.
Simple Cottages are based on the PF Lodgings and can provide basic accommodation for up to ten people. However, they also make homes for smaller families where the main bread winner is skilled Expert, Adept or Warrior. This example hase a ccouple of small bedrooms and a storage area, while the rest of the space is given over to a general living area. Needs input from a skilled builder to start with, but can be completed by unskilled commoners.