Cosman Assist provides complete drainage, utility, and ducting solutions for projects of every scale. From deep drainage systems to essential service trenching, we deliver safe, accurate, and fully compliant installations. Our team ensures long-lasting performance, efficient water management, and secure routing for gas, water, electrical, and communications infrastructure.

Effective drainage and utility installation is essential for every modern development, and Cosman Assist is trusted for delivering safe, precise, and fully coordinated solutions. Our team handles deep foul and stormwater drainage, manholes, chambers, SuDS features, attenuation systems, and hydrobrake controls with exceptional attention to detail.
We also install gas, water, electrical and communications ducting, ensuring future-proof access and long-term performance. Safety is paramount—our engineers work under strict Permit to Break Ground procedures and use Vacuum Excavators around live services to prevent damage. With professional planning and quality materials, we ensure reliable infrastructure that stands the test of time.