Bespoke plumbing design solutions for m&e projects & residential needs
We can design your plumbing & heating system
At 123 Plumb, we manage every stage of plumbing system design, whether for residential homes, commercial buildings, or large industrial complexes. Our team leverages advanced 2D CAD and 3D modelling technology to craft highly accurate and detailed plans. By working closely with architects, engineers, and contractors, we ensure each design is tailored to the specific requirements of the project.
Heat Pump Heating Design is often overlooked with installation but its the most important part of the project. We have the Knowledge through our training and on site experience due to having installed over 40 Heat Pump retrofits so far.
A full room by room Heat loss survey is where it all starts. Due to our background in different aspects of the building industry we understand the fabric differences of a home in much more depth and therefore can be sure the Heat loss survey is accurate.

Our Process
- 1. Initial Consultation
- 2. Site Assessment
- 3. Design Phase
- 4. Client Review
- 5. Permitting & Compliance
- 6. Implementation
- 7. Quality Assurance
- 8. Post-Installation Support

Our team specialises in:
Plumbing Layouts:
We handle all aspects of plumbing design, from water supply systems to efficient drainage solutions, ensuring optimal flow and functionality.
Heating System:
Our expertise includes designing heating systems such as underfloor heating and central heating, prioritising comfort and energy efficiency.
Sustainability Solutions:
We focus on innovative approaches to water conservation and energy efficiency, helping clients reduce their environmental impact.
Design Audits
Our thorough audits of existing plumbing designs ensure compliance with local regulations and identify opportunities for optimising system performance and efficiency.
On-Site Services
Our experienced engineers are available for site inspections, condition surveys, and as-built drafting. These services guarantee that every aspect of the plumbing system is implemented to the highest standards, providing peace of mind to our clients.
Sustainability
123 Plumb is dedicated to implementing sustainable practices in every plumbing project.
Our team provides thorough documentation and reporting to fulfil planning authority requirements for both new and redevelopment initiatives. We prioritise innovative technologies and solutions, including water conservation methods and energy-efficient designs. Additionally, we conduct detailed assessments to maximise resource efficiency and minimise environmental impact, ensuring our plumbing solutions not only serve our clients' needs but also contribute to a more sustainable future.