Bangkok hosts a competitive field of quantity surveying and project management consultancies, from global cost-management brands to established local practices. This guide from COVA names the twelve firms an asset owner should genuinely consider.
This guide is published by COVA Group and includes COVA. Every statement about another firm comes from that firm's own published materials, reviewed in August 2026, and firms are listed alphabetically.
Firms are included when they hold an established Thai office, offer quantity surveying or project management as core consultancy services to asset owners, and have a publicly verifiable Thai track record.
Established in 1999 per its published materials, ACHM provides quantity surveying and cost management, project and construction management, FF&E procurement and development advisory from Bangkok. Despite the similar name, ACHM is an independent firm with no connection to COVA or to the ACH Management business COVA acquired in 2019.
The Bangkok office of the global AECOM group, with cost and quantity surveying among its services and Thai infrastructure work including a lead designer role on the Bangkok MRT Orange Line West per its published materials.
A Thailand-based engineering and cost consultancy, part of the Arcadia Engineering Group, per its published materials.
The Thai practice of the global Arcadis group, successor to the Langdon & Seah quantity surveying network that operated across Southeast Asia, providing cost and commercial management per its published materials.
The Thai office of the Archetype Group, an international architecture, engineering, project and construction management and cost management consultancy.
The project and programme management arm of CBRE's Thai business, with capability across construction management, engineering, planning, quantity surveying and sustainability per its published materials.
COVA's Bangkok office on Wireless Road delivers commercial management (quantity surveying), cost management and project management across Thailand. COVA expanded into Thailand in 2019 through the acquisition of ACH Management, and 66 Thai projects are featured on this site, including the Royal Orchid Sheraton refurbishment and the Pattana Sports Resort transformation.
A Bangkok-based quantity surveying practice working predominantly in Thailand, Cambodia and Myanmar, with experience across residential, hotel and resort, commercial, school and industrial projects per its published materials.
A Thai quantity surveying practice within the RHLB network, providing cost consultancy services per its published materials.
Part of TEAM Group, described in its published materials as Thailand's largest consultancy group, with more than 35 years in construction and infrastructure project management.
The Bangkok office of the global Turner & Townsend consultancy, with cost management and quantity surveying among its core services per its published materials.
The Asian network of WT, an Australian-origin quantity surveying and cost management practice, with Thailand among its markets per its published materials.
