I've got a situation where my deck is level with my back door, and when it rains the water will run into/under my back door. I've never seen water on the floor in the house, but the floor is slightly softer and more springy next to the back door. Additionally, the back door is a bay window configuration and technically attached to the house as part of the deck. At some point someone identified that the joist under the back door had water damage as they put steel plates/reinforcement around it. During my original home inspection before I bought the house, the inspector said the deck should've been built 6" below the back door (and the water damage is being caused by that oversight).
My question for you guys is is there anything I can do to fix this besides rebuilding the deck and dropping it 6"? Building a deck myself is outside of my comfort zone, but spending a ton of money having a deck built probably wouldn't make a lot of sense financially as my house and neighboring houses are valued at ~130k. If I was planning on living here forever I'd be more willing to spend a lot of cash making it how I want, but I'm tentatively planning on renting this house out when we move to a bigger/different house.