Renting a small 1920's house - noticing floor is "soft" under foot on enclosed sun porch and kitchen with some sloping - how and what do I do to investigate/evaluate for my nice 70 year old land lady - I might even attempt to enlist my carpenter spouse in an apporved fix - or is it likely to be too large/expensive to attempt as a diy?
If you can get under to see the extent of the damage, you may be able to determine the cause.
We have had that problem with the porch at the restaurant, because the original owner NEVER used any treated lumber. I have had the "fun" of replacing joists including sistered joists as well. Not to mention roofs and rafters.
By your address, I suspect you are in the Gulf Coast, too. So between our high humidity, and the native insect population, it is a challange to keep a wooden structure together.
Island I'm betting our little wood eating friends are all through that porch. Job one would be look for termite damage. Job two would be to figure out where water is coming from. Down from the top or from under the porch. It could just be very old wood and the humidity got it. If the labor is free the job probably wouldn't be that much money. Depends how big a porch and how much damage.
Kitchen sounds scary. Is the kitchen and porch right next to the porch?
I take it the house has a crawl space? Brick or wood?