Reliable Drainage Solutions for Residential, Commercial & Public Projects
AH Drainage delivers reliable, compliant, and high-quality drainage work across Auckland. With over 50 years’ experience, we handle every job with precision, accountability, and care — from small residential installations to large-scale commercial and public infrastructure.
Auckland Drainage Experts
Experience, Precision & Results You Can Rely On
For more than five decades, AH Drainage has delivered expert drainlaying and installation services for homes, businesses, and public works across Auckland.
Led by Senior Certifying Drainlayer Allen Harriman, our team combines practical skill with technical accuracy — managing every stage from design and installation through to Auckland Council inspections and Watercare approvals.
We take care of the details that keep projects moving: coordinating with Council, Watercare, architects, surveyors, and builders. With AH Drainage, you can expect prompt communication, efficient paperwork, and drainage work done right the first time.
Who We Work With
Trusted by homeowners, builders, and councils, AH Drainage provides certified drainage solutions for every scale of project — from private properties to large developments and public infrastructure. Every job is completed to New Zealand standards, on time, and without hassle.
Residential Drainlaying
Code-compliant drainage for homes, driveways, and private properties — including stormwater, sewer, subsoil systems, driveway channels, and waterproofing. Reliable workmanship that keeps your property dry and future-proofed.
Commercial Drainage Solutions
Full-scale drainage services for developments, industrial sites, and commercial projects. From design to installation and connection, we deliver compliant, efficient systems that stand up to heavy use.
Public Drainage Projects
Certified drainage services for council works, subdivisions, and public infrastructure. Trusted partners for compliant, on-time delivery and seamless coordination with Watercare and Auckland Council.
What We Do
Comprehensive Drainage Services Across Auckland
AH Drainage provides a full range of certified drainage services. From new installations and system upgrades to inspections, waterproofing, and flood remediation, we deliver practical, technically sound solutions designed for long-term performance.
Sewers
Installation, repair, and replacement of residential and commercial sewer systems. Our work ensures reliable wastewater flow, full compliance, and long-term performance.
Stormwater
Design and installation of efficient stormwater drainage systems to manage runoff, protect foundations, and prevent site flooding.
Subsoil Drainage
Targeted solutions for wet or unstable ground, preventing water build-up and protecting structures, lawns, and retaining walls.
Driveway Channels
Surface drainage systems designed to capture and divert water from driveways and paved areas, preventing pooling and surface damage.
CCTV Surveys
Comprehensive drainage inspections using advanced camera technology — allowing accurate diagnosis, reporting, and maintenance planning.
Flooding Solutions
Mitigation and repair services to address site flooding and water ingress, restoring functionality and preventing recurrence.
Waterproofing
Protective waterproofing solutions for below-ground areas and retaining walls — safeguarding properties against leaks and water damage.
Insurance Remediation
Assessment, repair, and reinstatement of drainage systems following flood or water-related damage, with full insurance reporting support.
Enquire with us
Talk to our team today about your drainage project.
Need a certified drainlayer for your next project? AH Drainage delivers prompt, professional service — from design and planning to installation and sign-off. We work efficiently with all parties to keep your project on track. Expect a reply within one business day.
Phone: 09 376 9880
Email: allen2harriman@gmail.com