Practical Wastewater Solutions, Designed for Your Site

BM Design provides specialist OSET and wastewater design services for residential, commercial and community projects across New Zealand.

Need any help?

+64 27 296 9878

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Years of Industry Experience

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BOP & WAIKATO

APPROVED OSET DESIGNER

NZ-WIDE

PROJECT SUPPORT

Practical Wastewater Solutions, Designed for Your Site

Based in Tauranga, BM Design has been supporting projects across New Zealand since 2021. We specialise in OSET and wastewater design, providing practical, compliant and site-specific solutions for residential, commercial and community developments.

From the initial site evaluation through to design, reporting and consent management, our team provides clear guidance and reliable support throughout the process.

With more than 600 projects completed and counting, we bring technical knowledge, practical industry experience and a strong commitment to customer service to every project.

Specialist Services From Site Evaluation to Final Consent

Practical wastewater and OSET solutions tailored to your site, project requirements and long-term needs.

Wastewater design

We specialise in OSET/Wastewater design for residential to commercial projects. Our services include site meetings, OSET reports, schedule 5, site evaluations, CAD site plans and details, wastewater disposal designs and options to suit your site, building and resource consent management, evaluating existing systems to remedial solutions.

Structural Engineering Droughting Projects

We provide structural draughting services backed by extensive building industry experience. Our services include detailed CAD drawings, structural documentation, building plans and technical drafting solutions designed to support construction, engineering requirements and consent applications.

Engineering Observations & Inspections

We provide professional site inspections and engineering observations for residential and commercial projects. Our services include onsite assessments, construction observations, compliance checks, reporting and practical recommendations, working alongside Licensed Building Practitioners and project teams.

Consultancy Services

We provide professional consultancy and project support across wastewater, engineering, building and development projects. Our services include technical advice, project assessments, design reviews, consent support, problem solving and ongoing assistance to help keep your project progressing efficiently.

Recent Projects

Practical expertise and tailored solutions, delivering quality, efficient outcomes for every project.

yurt accommodation facility

Taukoro Road

AS BUILT - Matahui School

Pyes Pa Road

Pukehina Parade

Ainsworth Road Ecocycle System

Waiorakei Way

Why Choose B M Designs?

Practical expertise and tailored solutions, delivering quality, efficient outcomes for every project.

Approved & Experienced

OSET-approved wastewater designer recognised by the Bay of Plenty and Waikato Regional Councils.

Tailored Solutions

Every wastewater design is developed around the specific conditions and requirements of your site.

North Island Coverage

Providing wastewater and consulting services across the North Island, with particular experience in Bay of Plenty and Waikato.

Ongoing Support

Continued guidance, advice and project assistance available beyond the initial wastewater design stage.

Let's Find the Right Solution for Your Site

From wastewater design and geo consulting to structural draughting and site inspections, B M Designs provides practical professional services for residential, rural and commercial projects.

Need any help?

+64 27 296 9878

From Initial Assessment to Final Design

We keep the process straightforward, providing practical guidance from the initial assessment through to design and project support.

Step 1

Tell Us About Your Project

Get in touch and provide us with the details of your property, development or project requirements.

Step 2

Site Assessment

We assess the site and relevant project information to understand the conditions, constraints and requirements involved.

Step 3

Design & Documentation

Our team develops the appropriate wastewater, structural, geo or consulting solution and prepares the required documentation.

Step 4

Review & Refinement

We work through any required changes and ensure the design is practical, suitable and aligned with the relevant requirements.

Step 5

Project Support

Once your design is complete, we remain available to assist with inspections, observations, consultation and any further project needs.

What Our Clients Say

Trusted by clients for practical advice, quality design and reliable project support.

Thank you for your extensive work and excellent design. Your knowledge, professionalism and attention to detail made the whole process easy. Legend!

Excellent service from start to finish. B M Designs provided practical advice and a well-considered solution that suited our property perfectly.

Professional, knowledgeable and great to deal with. The team made the design and consent process straightforward and kept everything moving efficiently.

We were extremely happy with the service and quality of the work. The design was practical, detailed and delivered exactly what we needed.

Frequently Asked Questions

Find answers to common questions about our services, wastewater design, project process and consultancy support.

What areas does B M Designs service?

We provide wastewater design and consulting services throughout the North Island, with particular experience across the Bay of Plenty and Waikato regions.

What is OSET wastewater design?

OSET (On-Site Effluent Treatment) design involves assessing your property and developing a suitable onsite wastewater treatment and disposal system based on the site conditions and project requirements.

Are you approved for wastewater design?

Yes. B M Designs is OSET approved by the Bay of Plenty Regional Council and Waikato Regional Council.

Do you work on residential and commercial projects?

Yes. We provide services for residential, rural and commercial properties, from individual homes through to larger development and upgrade projects.

Do you provide site inspections?

Yes. We provide onsite inspections, engineering observations and assessments for both residential and commercial projects.

Our Trusted Business Partners & Consultants

Trusted industry partnerships delivering greater expertise, reliable solutions and stronger project outcomes.

Professional Advice. Practical Solutions.

Get in touch with B M Designs today to discuss your wastewater, consulting, draughting or project requirements.

Professional Advice. Practical Solutions.

Get in touch with B M Designs today to discuss your wastewater, consulting, draughting or project requirements.