Malton and Norton have unveiled a £250,000 scheme for new changing rooms and new kitchens to be built at their Gannock ground.
Club secretary Bill Laidler told BBC Radio York: "We have very big junior and mini sections and we just don't have enough room to cope.
"It's to build a new changing block, which will incorporate four changing rooms to cater for the numbers."
The plans will be put to a special general meeting on 28 November.
"We're busting at the seams now, both junior and mini-wise, and if we had an influx we couldn't cope," Laidler added.
"To fund it, we're looking to grants and a loan from the RFU and a few other grants that we can get from other places. We're very dependent on those.
"We are getting a few (juniors) coming through into the senior side. We've got a fairly successful under-19 side at the moment."
The club play in North 1 East and are firmly in mid-table following their promotion.
"We're doing quite well this season, although there's two or three games that we've lost by the odd point that could or should have gone the other way," Laidler said.
If all goes well and members approve the plans, work could start in January 2012 and be finished by the summer.