This 2x4 will hold up that sagging/rotted floor joist
And I'll leave all this old wood for the termites

Temperature Pressure Relief Valve Drain Pipe
Right at face level

Builder forgot about the bottom cover of Bay Window. Left the interior wall open to weather, bugs, reptiles, and rodents for 6 years!

Don't use the fireplace

Water ponding on roof at chimney and siding, a little moss, some rust, and roofing mastic. So that's where the water was coming in.

Not only did the HVAC contractor cut a roof rafter and ceiling joist but then he failed to properly fasten the furnace vent pipe sections together.