The new structure is designed to spread the cost of lettings and property management services over the course of a tenancy, rather than requiring landlords to pay fees at the outset.
KFH said the change reflects evolving market conditions following the implementation of the Renters' Rights Act, which introduced reforms to the private rented sector, including periodic tenancies.
The agency, which operates more than 50 branches across London, said the move is intended to improve cash flow flexibility for landlords and reduce initial costs associated with letting a property.
John Ennis, chief revenue officer at Lomond, said: "London property remains one of the strongest long term investments in the UK, and our services should reflect how the market is evolving.
"The Renters' Rights Act makes tenancies periodic, so it's only right our fees move to a monthly model too, removing upfront cost barriers and giving landlords greater cash flow flexibility.
"This isn't just a pricing update. It's a signal of how seriously we take landlord partnerships."
