Property Line Encroachment and Negligent Construction Liability

A property owner sued a neighbor, alleging that the latter's construction of a retaining wall encroached upon their land and that the wall's foundation caused damage to their own adjacent building by undermining its support. The neighbor argued that the construction was done in accordance with the authorized building permit and that the resulting damage was a consequence of the pre-existing poor condition of the plaintiff's structure. The court affirmed the lower court's decision, reasoning that while the construction adhered to the permit, the evidence demonstrated a direct causal link between the foundation work and the damage to the neighboring property, thus establishing liability for the resulting prejudice under general tort principles, irrespective of compliance with administrative regulations.