The move will reunite Parr with ex-Precise Mortgages director of bridging and current MT Finance commercial director Gareth Lewis.
Knowledge Bank added second charges and bridging to its live feed as an increasing number of lenders change products or pull lending in these sectors.
The borrower's purchase was under threat due to COVID-19 implications.
The company is accepting applications up to £1m at a maximum 62.5% LTV for residential and residential light refurb projects.
Colliers International has become an associate member of the Association of Short Term Lenders.
The association has yet to be issued with government guidance for the short-term lending community.
The ASTL has deferred its quarterly meeting until a later date.
The transaction will lead to a £15m development finance facility on a £25m GDV.
Stevens will assist the bridging lender access capital markets.
This partnership is with immediate effect.