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Jan Marzec
Associate Director
Real Estate Dispute Resolution
Jan has over 20 years’ experience of advising clients on disputed matters, including cases resolved at mediation, arbitration, First Tier Tribunal and the County and High Courts. A number of the cases he has acted on have led to reported decisions.
The matters he acts on include:
- Residential and commercial lease covenant disputes, including covenants against alterations, sub-letting and assignment, and repairing covenants
- Opposed and unopposed claims for a new lease under the Landlord and Tenant Act 1954
- Forfeiture of commercial leases and interim possession orders against squatters of commercial property
- Housing possession claims
- Real property disputes arising from rights of way, restrictive covenants, adverse possession and dispute boundaries.
Work highlights
EMERGENCY INJUNCTION
Led team on successful application to High Court for emergency injunction to restrain sale of clients’ property by LPA receiver. Subsequently assisted client in uncovering web of fraudulent mortgage agreements, and brought claim to dispute clients’ liability, leading to court order setting aside some dozen fraudulent agreements. Successfully applied for recovery of clients’ costs.
UNDUE INFLUENCE
Brought claim in Business and Property Court on behalf of elderly client seeking to unwind sale by herself of her home, on grounds of undue influence or mistake. Managed mediation leading to substantial compensation being paid.
Recent articles
Announcements
DMH Stallard has reinforced its position as the South East's leading law firm with another strong performance in the Chambers and Partners 2027 legal rankings.
20/10/2026
Insights
The Private Rented Sector Database (PRS) is a government register for all private landlords in England, and their rental properties.
19/10/2026
Events
As we take a festive break from our usual Property and Planning breakfast seminars, join us in Brighton this December for a special festive quiz edition, hosted by our Real Estate and Planning teams.
Events
As we take a festive break from our usual Property and Planning breakfast seminars, join us in Gatwick this November for a special festive quiz edition, hosted by our Real Estate and Planning teams.