National online estate agents nu:move are to start a crowdfunding campaign.
The business, which charges from £399 for lettings and £699 for sales, launches on Seedrs on March 3.
Its price packages are all charged on completion, with nothing to pay upfront, and include Rightmove and Zoopla listings, and sales progression.
The more expensive packages (£1,195 for sales) include escorted viewings.
The business, founded by members of the Batth family in 2013, also runs a franchise offering, which it wants to expand with the money raised, and has international ambitions.
It has not yet said how much it wants to raise but says all will be revealed when its campaign goes live.