Absolutely save yourself the future headache and get it done right the first go around. It's a no brainer.
Also, consider when you do resale not only will it show as a violation but the prospect buyer is going to offer less than your asking because now he/she will have to deal with the headache and out of pocket expense.
Codes are not meant to be broken.
Please please have the work done up to current codes. For two important reasons:
1. Failure to have the work done in accord with city codes could affect your homeowners coverage. Let's say a pipe was to burst and you get a flood in your home that causes damage to your flooring and walls. Your home owners insurance will send an adjuster out. If the adjuster determines you had pipes that are not up to code, they could actually use that as a rational to deny covering your loss.
2. If you for anyreason want to sale in the future you will have a mess on your hands. Maybe the requirement for the iron /copper has some health and safety implications. Maybe the water pressure in your part of town is too high for PEX tubing. If your buyer does an inspection and finds out you have PEX tubing , the deal could l fall apart or the buyer could insist you re-do the plumbing with the correct pipes.
I always stress to my clients, when it comes to: plumbing, roofing, or electrical work NEVER cut corners and alwasy follow the codes even if they do not make sense.
Best of Luck to You!!!
Kawain Payne, Realtor,
Material cost for a sink and hose bibs won't be more than a couple hundred dollars. If you have some tools already and the runs aren't long, should only be $100+. If you don't have the know how that's another issue.