Santhaya & Associates (S+A) is an architectural and engineering consultancy firm based in Bangkok.

S+A provides design and project/construction management services in the fields of architecture, interior design, landscape and building engineering.

Established in 1963, S+A has over 50 years of experience and is one of the oldest and most outstanding firms in the profession in Thailand.

Staffed with a multi-disciplinary team of architects, interior designers, engineers and construction managers, S+A is capable of handling an extensive range of project types and scales, from residential projects to airports constructions.