Will plumbing and electric rewiring increase value

[Stephen Kunen]

We recently purchased a 6 unit building and are in the process of rehabbing it. Because it’s a very old building (more than 100 years), turned out there is more work needed than our initial scope. Most notably, it looks like we will need to re-do all the plumbing to replace into pvc pipes, and also converting the gas heat into electric so we can separately meter the electricity and also replacing and modernizing up from knob and tube wiring. We’ve heard that these improvements will increase the appraised value. Can someone confirm this? What is the best way to convince the appraisers? Does showing separate sub metering for electric and water help? Thanks in advance!