ORHT is a leading consultant to the construction and property industry. Founded in 1945 ORHT possess experience of all building types and market sectors.


O’Reilly Hyland Tierney + Associates (ORHT) is one of the longest established Chartered Quantity Surveying practices in Ireland. Since its inception in 1945, ORHT has established a reputation for timely, professional and independent cost advice on a portfolio of projects which encompasses the entire spectrum of construction activity.

Our extensive clientele includes government departments, state councils and agencies,  the Health Service Executive and local authorities.

We also act for major British and Irish property development companies, financial institutions, industrialists, hotel groups and large private developers.