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Leah Horn is a Partner in CMS’s Infrastructure, Construction & Energy Disputes team, specialising in high value, technically complex domestic construction disputes.
Leah acts for developers, Tier 1 contractors and professional consultants across the full lifecycle of contentious construction matters, with particular expertise in litigation and adjudication arising from major developments. Her work frequently involves disputes relating to time, cost and defects, including fire safety and structural issues.
She has developed a strong specialism in claims arising under the Building Safety Act 2022 and related legislation, advising on both upstream and downstream exposure. Leah regularly assists clients with Defective Premises Act claims, Building Liability Orders, remediation disputes and associated strategic considerations across large portfolios.
Leah has played a key role in some of the most significant building safety litigation to come before the courts, including acting for URS Corporation Limited in the landmark Supreme Court case URS Corporation Ltd v BDW Trading Ltd, which examined the interpretation and retrospective effect of the Building Safety Act.
In addition to building safety work, Leah advises on disputes arising from high end residential, mixed use, infrastructure and data centre projects, and is experienced in managing complex multi party proceedings in the Technology and Construction Court.
She is a member of the Building Safety Act focus group at CMS and contributes to the firm’s Building Safety Act Annual Review. Leah is also an active member of the Technology and Construction Solicitors’ Association and the Society of Construction Law.
