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Apartment Owners Subletting Without Consent

Tackling Unauthorised Subletting

Saint Natius property management expertise - resolving unauthorised short-lets with concierge

Quick Snapshot


Location: Greenwich

Client: Residential Developer of a newly built development

Challenge: Leaseholder attempted unauthorised Airbnb sublet, causing risk and distress

Outcome: Subletting stopped, leaseholder warned, ongoing monitoring implemented

“Action was taken quickly and decisively, ensuring the estate remained safe and secure. We finally have confidence in management." — Leaseholder, Greenwich

The Challenge

The concierge reported a distressed individual requesting keys to access an apartment. There was no digital authorisation or ID verification, nor had the leaseholder provided direct instructions. It became apparent the person had attempted to book the apartment on Airbnb, claiming they had permission.


This raised serious concerns: unauthorised subletting is a lease breach and can cause noise, security risks, and disputes among residents. During investigation, we found a growing pattern of short-term lets, music videos, and parties - one involving over 200 people on a single occasion.


The Obstacles

  • Unauthorised occupancy and illegal activity within the estate

  • Leaseholder initially uncooperative

  • Risk of disruption and potential safety/security issues

  • Need to balance enforcement with clear communication to residents and leaseholders


Our Approach

  • Immediately contacted the leaseholder formally, explaining the breach and issuing a warning

  • Advised the individual that their arrangement was illegal and could not proceed

  • Initiated monitoring of short-term rental platforms (Airbnb, Booking.com, etc) to identify other violations

  • Conducted external inspections of apartments suspected of unauthorised use

  • Updated the concierge, estate security, and local police to ensure vigilance and swift response

  • Established a regular reporting system and documentation for the developer and investors


The Outcome

The immediate subletting issue was stopped, preventing further risk to residents. Ongoing monitoring detected other potential breaches early, and warnings were issued where necessary. The leaseholder understood the consequences of unauthorised subletting and compliance improved significantly. Residents and the estate management were reassured that issues were being actively managed.


What If We Hadn’t Stepped In?

Without intervention, unauthorised sublets could have escalated, leading to disruptive parties, security risks, potential insurance claims, and strained resident relationships. Long-term non-compliance would have undermined the integrity of the estate.


Ready to prevent subletting issues?

Unauthorised tenants or short-term lets causing risk? We act promptly, enforce lease terms, and safeguard your property.


Saint Natius, Property Management, Leaseholder Compliance, Short-Term Lets, Unauthorized Subletting, Apartments

Preventing unauthorised short-term lets, safeguarding communal harmony, and supporting leaseholders to remain compliant.

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