Stacey Wood has been appointed to the role, joining from Coventry Building Society where she was business development manager for the Midlands Region.
Prior to this, Ms Woods spent five years working as a financial adviser.
In her role at PMS Mortgage Club and Sesame Network, Ms Wood will work with mainstream and specialist lenders on innovations in the new build and first time buyer space.
In addition, she will work with builders, housing associations and local government to improve the adviser process.
PMS and Sesame saw its mortgage completions reach the highest level for a decade in 2018 after rising 12 per cent.
The housing market experienced a rocky time in the run up to Brexit but was bolstered by first-time buyers.
Meanwhile the Chancellor announced £3bn in funding for affordable homes in his spring statement in March. Philip Hammond MP said a £3bn guarantee scheme would support the delivery of about 30,000 affordable homes.
He also pledged £717m from the infrastructure fund to "unlock" up to 37,000 new homes in West London, Cheshire, Didcot and Cambridge.
Jane Benjamin, director of mortgages at Sesame and PMS, said: "Our group is already very active in this sector, but we want to invest and grow this further. The creation of this new role reflects the importance of new build for advisers and the growth opportunities ahead.
"At PMS and Sesame we strongly believe that having a full suite of dedicated support across all mortgage market segments is vital. Our group has enhanced its support in the later life lending market, and we’re now complementing this at the other end of the spectrum.
"We’re opening up more opportunities for members to support first-time buyers and assist with intergenerational lending, so that all age groups and customers are looked after.
"With her knowledge of the market from both an adviser and lender perspective, Stacey has the credentials and experience to make a real difference in this exciting new role."
Jeremy Duncombe, director of intermediary distribution at Accord Mortgages, said: "New build is a critical area of focus at Accord, and in the wider intermediary market.
"We’re delighted to see that Sesame Bankhall Group share this vision with the appointment of Stacey, and look forward to working with Stacey and the wider team at PMS and Sesame to drive forward the new build agenda."