Rental Checker

Rental Checker
Rental Checker
Robust, impartial evidence for market rent determinations
Your solution to Section 13 of the Renters' Rights Act 2025

Join other agents who have already signed up and now use The LonRes Rental Checker:
Rental Checker

What is Rental Checker?
The LonRes Rental Checker is the ideal solution for market rent determinations across London. Through LonRes, agents are joining forces to create an independent, reliable source of rental data that accurately reflects the market and achieved rents, helping clients avoid costly, time-consuming tribunals and let properties quickly at the best possible price.
Rental Checker confirms the need for an agent in the letting process and makes you indispensable to landlords.
The Renters' Rights Act 2025
Determining market rents
The Renters' Rights Act 2025 has raised specific concerns, namely around the rise in unreliable evidence for rent reviews and the consequential distortion of the market. Following the new legislation, landlords and agents will now be required to set out an initial asking rent for their property. Importantly, they will be legally prohibited from requesting or accepting offers above the advertised rent.
Pricing Inaccuracies
To follow the rule preventing accepting offers above the advertised rent, asking rents are likely to become inflated across major consumer portals, creating a skewed representation of the market and unreliable evidence of actual rent achieved, for market rent determinations. The LonRes Rental Checker reports on the achieved rent, giving you accurate data.
Rise in Disputes
Rent increase demands can be made annually by serving a Section 13 notice on the tenant. The rent increase demanded must be in line with 'market' rents.
Without access to reliable market data, tenant objections to proposed rent increases are likely to rise. Furthermore, since any extra income from a new agreed-upon rent cannot be collected retrospectively, it may be seen to be in the tenants interest to challenge a Section 13 notice in order to delay any increase.
Lengthy Tribunal Delays
A surge in disputes will inevitably see more applications to the First-Tier Property Tribunal. Typically, this means a further delay in proceedings of several months.
Lost Earnings
Since you will not be able to claw back lost earnings after the tribunal, landlords and agents will lose out on lost monies.
The need for a more reliable, independent source of market evidence is clear.


Why is this needed now?
The Renters' Rights Bill has raised specific concerns, namely around the rise in unreliable evidence for rent reviews and the consequential distortion of the market. Following the new legislation, landlords and agents will now be required to set out an initial asking rent for their property. Importantly, they will be legally prohibited from requesting or accepting offers above the advertised rent.
Pricing Inaccuracies
To follow the rule preventing accepting offers above the advertised rent, asking rents are likely to become inflated across major consumer portals like Rightmove, Zoopla, and OnTheMarket, creating a skewed representation of the market and unreliable evidence of actual rent achieved, for rent reviews.
Rise in Disputes
Rent increase demands can be made annually by serving a Section 13 notice on the tenant. The rent increase demanded must be in line with 'market' rents.
Without access to reliable market data, tenant objections to proposed rent increases are likely to rise. Furthermore, since any extra income from a new agreed-upon rent cannot be collected retrospectively, it may be seen to be in the tenants interest to challenge a Section 13 notice in order to delay any increase.
Lengthy Tribunal Delays
A surge in disputes will inevitably see more applications to the First-Tier Property Tribunal. Typically, this means a further delay in proceedings of several months.
Lost Earnings
Since you will not be able to claw back lost earnings after the tribunal, landlords and agents will lose out on lost monies.
The need for a more reliable, independent source of market evidence is clear.

How does Rental Checker help agents?
The LonRes Rental Checker allows agents to deliver exceptional service to their clients by providing real-time, accurate market rent information based on achieved rents, ensuring timely responses and minimising delays.
Also, should the market rent determination go to the First-Tier Tribunal (Property Chamber), Rental Checker data will be used to justify any rental increase and must be reviewed by the tribunal.*
LonRes has been used as a reliable source of property data for over 25 years, and has been handling rental data since 2005.
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Access to evidence-backed market rents
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Reducing the risk of disputes and tribunals
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Making agents indispensable in the lettings process
*Arrowdell vs Coniston 2005
How can I access The LonRes Rental Checker?
Only agents contributing data are able to benefit from this service.

Connect your CRM
We'll create a live feed of relevant data connecting your CRM to Rental Checker.
Log in to LonRes
Get immediate access to reports in the Lettings section of your LonRes platform.
Easy report generation
Leverage real-time, independent rental evidence to efficiently support rent reviews.
You remain in full control of your data
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Your data is automatically sent to Rental Checker as “invisible,” with properties anonymised
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Only minimal details appear in the Rental Checker system and reports
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Your Rental Checker properties are not live for commission sharing
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If the tribunal requires full details, these can only be revealed with your permission