Is it possible to add washer and dryer connections to 5er?

Much easier and cheaper to add W/D if pre wired and plumbed. You need electric, drain, and venting. Plus nice to have pan drain under W/D. We were paying about $45 a month to use RV park W/Ds. Sometimes those machines were filthy. We like having a W/D in our RV. We had the factory add ours. Was cheaper than CW sales price.