A new platform designed to keep letting agents compliant with rent review rules has launched ahead of the Renters' Rights Act, with MarketRent co-founded by Rajeev Nayyar and Duncan Careless - the duo behind property maintenance platform Fixflo. The launch signals growing commercial pressure around rent review compliance as the legislative deadline approaches.
Why Rent Reviews Are Under the Microscope
The Renters' Rights Act (the incoming legislation that abolishes fixed-term tenancies and Section 21 "no-fault" evictions) will change how landlords and agents increase rents. Under the new framework, rent increases must follow a defined, evidence-based process. Get it wrong, and tenants have grounds to challenge the increase at a tribunal.
For your tenants, this is broadly positive. It means any rent increase they receive must be justified by market evidence, not simply imposed. For landlords and agents, the risk is procedural. A rent review that lacks proper documentation could be overturned, creating a void-risk scenario where a landlord is stuck on a below-market rent while a tribunal case drags on.
That compliance burden is exactly what MarketRent is targeting. The platform, according to PropertyWire (April 2026), is built to streamline the rent review process for letting agents facing increased regulatory scrutiny.
The founders know the sector. Nayyar and Careless built Fixflo into one of the most widely used property maintenance platforms in the UK before founding MarketRent. The same logic applies: take a high-friction, error-prone process and make it trackable and auditable.
What This Means in Practice for Agents and Landlords
In practice, a compliant rent review under the Renters' Rights Act will need to show: the proposed new rent, comparable market evidence, and the correct notice period. Miss any step and the review is open to challenge.
Letting agents managing large portfolios face the biggest operational challenge. Running rent reviews manually - across dozens or hundreds of tenancies - creates audit risk at scale. A platform that systematises the process reduces that risk, and reduces the time each review takes.
For landlords, yield impact is real here. A delayed or overturned rent review means staying below market rate for longer. Use the Property Filter stress test calculator to model how a rent freeze of six or twelve months affects your returns, particularly if you are refinancing.
Agents advising landlords should also be pointing clients to free resources on the Renters' Rights Act now - before implementation - rather than scrambling when the Act is in force.
The Property Filter investment strategy guides cover how different landlord structures are adapting to the new regulatory environment, including the shift toward longer tenancies and relationship-based letting.
Key takeaways
MarketRent has launched a platform to help letting agents manage rent reviews compliantly under the Renters' Rights Act
Co-founders Rajeev Nayyar and Duncan Careless previously built property maintenance platform Fixflo
Rent increases under the new Act must follow an evidence-based process or face tribunal challenge
Agents managing multiple properties face the greatest operational risk from manual review processes
Landlords should model yield impact now using a rent stress test calculator
