Active job

Sloped floor needs releveling

The front end of my house slopes forward and also to the right in one corner. You can see joists (rimu I think) are sloped from the view under the house (quite a bit of room under there) as per pic. Have been told it's due to settlement as I live on sand and this is a 50s house. May need to be jacked up and some joists replaced. Or it could need more? One builder suggested fixing from inside the house. Solid home otherwise. Would appreciate anyone who has experience with foundations in case it's a more serious issue. My house is built on a concrete slab and the section is sloped. Not wanting the job done during winter. I think it would be good to see due to weather if I notice any more settling. Could be a Spring time job? But be good to get it looked at maybe with a laser level to see if you see a change between now and when the problem is remedied. And to chuck us a quote. Cheers.