Seth
Your approach to having inspections done but not relying on the inspection alone is wise and will go a long ways to minimize risk.As far hidden structural defects there are several simple and easy things you can do yourself to identify possible symptoms of structural problems that may need correction.
- Roof and floors; look for any obvious sagging.Sometimes you can feel a floor slope just by walking on it.Also as you are walking on a floor, be aware of any excessive movement. I was looking a two story SFR that as I walked across the floor you could actually see water sloshing in a fish aquarium.Also listen for floor squeaks. The fix on this particular house was not too bad.The nailing of the floor sheathing had not been done properly and needed to be redone.The big cost was in the removal and replacement of the carpets and floor tiles.
- Ceilings;look for cracks and excessive deflections. Cracks in the middle of rooms can be an issue
- Walls; look for cracking in the walls.Small hairline cracks a common and normally not a problem.Also small cracks above window and door openings are common.Larger cracks may be a sign of foundation movement or improper construction of the wall framing.
- Foundations; walk around the building to observe any apparent foundation movements.While not major problem in the area, this can be an expensive fix.Thousands of dollars.
- Others; doors and window not opening and closing properly.Several things may be the cause of this including foundation settlement and framing problems. Check for displacement cracking in the walls around the openings.
Finding the cause of a structural defect is kind of like going to a doctor because you have pain.You know something is wrong but you do not know what the cause is. That is where the doctor and testing hopefully can pin point the cause.In the case of a building, a structural engineer may be able to help you out if you or your inspector suspect that there may be a structural defect.I would suggest that you have an experienced investor friendly structural engineer on your team to help you diagnose possible structural defects that you may suspect.
This may sound like a lot but from my experience, most single and multi-family residences do not exhibit symptoms of structural distress.If you do find a property that you are interested in and it appears to have some hidden defects, this may be a great opportunity to negotiate a good deal.