Are you considered a residential remodeler? (addition, alteration, and renovation)
Or handyman construction services?
Home improvement/home renovation?
etc?
If so, see if 236118 is close to anything that you do.
Scroll down the long list here of everything included in that category 236118:
https://www.census.gov/cgi-bin/sssd/naics/naicsrch?code=236118&search=2017%20NAICS%20Search
I see you started another thread at the link below where you provided a little more info. You said it is maintenance of commercial property for a realtor. The info I provided above was for residential services.
I left some info about commercial services (code 236220) in your other thread. See if that is close. Here's your other thread.
<a rel="nofollow" target="_blank" href="https://ttlc.intuit.com/questions/4467718-my-husband-does-maintenance-for-a-realtor-on-commercial-property">https://ttlc.intuit.com/questions/4467718-my-husband-does-maintenance-for-a-realtor-on-commercial-property</a>