Baptiste Lanini focuses his practice on all areas related to land, real estate, and construction. He advises private and institutional clients on these various aspects and assists them before the relevant civil and administrative courts.

His areas of expertise in private law include construction and subcontracting contracts, architect and engineer contracts, legal mortgages for artisans and contractors, real estate purchase promises and sales, rights of first refusal, preemption, and redemption, acquisition of real estate by foreign nationals (Lex Koller), brokerage agreements, real estate development agreements, rental and lease agreements, co-ownerships, condominiums (PPE), neighbor disputes, rights in rem and building rights.

In public law, Baptiste Lanini handles matters such as land-use planning, building regulations, construction permits, environmental law (contaminated sites, noise control), secondary residences (Lex Weber), nature and landscape law, expropriations, and public procurement.