Just as a fun exercise let's take a look at the house on Zillow's mobile app splash screen. Do we see any potential issues? I'm seeing a yellow flag at the foundation area. If we zoom in a little (see photo below) we see a concrete slab sticking out beyond the siding. The foundation is not supposed to stick out this way, so what is happening here? Evidence suggests this slab was an old porch/patio and the owners decided to build an addition into this area--peeking through the window it looks like it was renovated into a large open plan kitchen and dining area. I would look for confirmation of this in the crawlspace/basement- there probably isn't any access under this area. Here are a few reasons why this is an important observation:
1. Typically siding should be installed to direct water away from the framing but in this case the siding terminates right at the foundation slab. The slab is level and not sloped away from the house and water will sit there decaying the siding, sheathing and framing. I would scrutinize the outside and inside perimeter for water damage.
2. Patio slabs are usually not adequate for addition foundations. Patio surfaces are often sloped, thinner and do not have water proofing, insulation or conduits/chases for electrical/plumbing and ductwork. We do not know for certain this is the case but I would be looking for more evidence to support this theory (based on experience there is a high probability this is the case) Depending on what other defects I find I may ask the buyer to verify the construction permits for this addition.
3. I would be looking closely at how heating/cooling, electricity, and plumbing is provided to this area. I would also be looking at the framing, insulation and ventilation of the attic area. If the general contractor was careless enough to build a kitchen/dining room on a patio slab they probably made other amateurish errors and I would be looking closely for them.
Feel free to send me any other high profile house pictures that may have issues- this was fun! As always, if you are buying, selling, or maintaining a home be sure to hire a Home Inspector with renovation experience that can recognize patterns like this.