Based in the south western UK town of Bath, the developer is reported to have made a six figure contribution to the company, which provides quotes to vendors for their property.
According to media reports the developer, Chris Bamford, is now a site director.
His investment was made in line with the Enterprise Investment Scheme (EIS), a UK government initiative which provides generous tax benefits to individuals and selected trustees who supply funds to smaller, unquoted companies.
"The popularity of price comparison websites has grown enormously in recent years, with an increasing number of consumers enjoying being able to find reliable information on commoditised services quickly and conveniently,” Bamford is quoted as saying.
"As such, a company disrupting the estates agency market provided a strong investment opportunity, especially taking into account its extraordinary growth."
According to Insider Media the company is planning a digital and media advertising campaign aimed at increasing its visibility in the UK housing market.
NetAnagent was founded in 2012 by Alexander Thorpe, Josh De Haan and Lloyd Nicholson-Taylor.
The site works by enlisting local and online agents to provide quotes for vendors who have posted basic details of their property to the website.
Vendors then select agents they prefer and may request a valuation. Once an agent is selected the site also informs any others who have shown interest that they have been unsuccessful.