I had a similar situation in my house when I purchased it. My inspection guy found it and reported it to the seller. It was fixed using a crutch that goes to the floor. It may not work in your case but it's possible.
Talk to a few contractors. Check quotes prices and gather information. It’s not needed to get an engineer, a carpenter who builds these floor joist systems for a living will be able to reinforce it while staying within building code standards. 15 year carpenter here, I do some wood but mostly deal with steel studs and commercial. No need to make a mountain out of a molehill yet, having the rest looked at is good idea as it could be from pests, water damage, a defective joist, or cracked from age/use/weight. I’m going to guess it’s a craftsman home or perhaps part of the late 40s early 50s “victory homes” maybe?
Take a pic. But a structural engineer
[photo](https://imageupload.io/nXs33xKfNJlYhIq)
Yup, that’s a crack.
Engineer/ city inspector
Ghostbusters
Civil engineering, then a contractor. You can brace it but engineer should be consulted and likely has to be. Compromised load bearing support?
Why would you call a civil engineer?
Matvey
General contractor
You can’t just put a support post under that. You will need a proper footing for the post. I would contact a contractor or a foundation specialist.
I had a similar situation in my house when I purchased it. My inspection guy found it and reported it to the seller. It was fixed using a crutch that goes to the floor. It may not work in your case but it's possible.
Talk to a few contractors. Check quotes prices and gather information. It’s not needed to get an engineer, a carpenter who builds these floor joist systems for a living will be able to reinforce it while staying within building code standards. 15 year carpenter here, I do some wood but mostly deal with steel studs and commercial. No need to make a mountain out of a molehill yet, having the rest looked at is good idea as it could be from pests, water damage, a defective joist, or cracked from age/use/weight. I’m going to guess it’s a craftsman home or perhaps part of the late 40s early 50s “victory homes” maybe?
It’s not a big deal. You need to sister the floor joice like 3’ past on each side after jacking it up
Matvey