About Us | Construction Cost Planning & Project Management

Simplifying the biggest struggles with everyday construction projects

CM3 Consultancy provides cost planning and project management services for the construction industry. Based in Chelmsford, Essex, we work across the Southeast of England, supporting projects from concept through to completion.

CM3 Consultancy gave us clarity, confidence, and control from day one. Their Masterclass and cost planning helped us avoid costly mistakes, make informed decisions, and navigate our self-build with confidence. What could have been overwhelming became structured, manageable, and even enjoyable.

Andy & Sinead Great Waltham Self Build

When our project began to drift and costs escalated, CM3 stepped in and completely transformed the experience. Adrian brought clarity, control, and calm – creating a clear cost plan, managing contractors directly, and delivering significant savings. What had become stressful and uncertain turned into a confident, well managed build. Engaging CM3 was one of the best decisions we made.

Mr & Mrs Crowther Self-Build Family Home

Positive Clients

1000 +

The business is Led by Adrian Gibbs, an RICS trained professional with over 30 years’ experience, CM3 has worked across residential development, affordable housing, commercial projects, and bespoke private homes. Our mantra is ‘Make it Simple’. Bringing clarity, structure, and commercial control to construction projects that can otherwise feel complex and overwhelming.

CM3 Consultancy offers a full suite of services, from Starting Line Cost Plans at concept stage, through design-stage Cost Development, to full project delivery, including Project Management, Construction Management, Open-Book Construction, and acting as Principal Contractor. Our role is to support your team and make your project a success.

Our Services

Experienced Support. Clear Advice. Better Outcomes.

At CM3 Consultancy, we combine technical expertise with practical insight. We focus on what genuinely matters to the success of a construction project.

Whether you are planning a new project or require experienced oversight on an existing scheme, we provide professional support that protects your investment and keeps your project moving.

Years Of Experience

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Property Developers

Commercially focused cost planning and project management to support viable, deliverable, and profitable schemes.

Self‑Builders and Private Clients

Clear guidance, cost control, and professional oversight to reduce risk and uncertainty throughout the build.

Architects

Reliable cost and delivery advice that supports design development, planning submissions, and client confidence.

Building Contractors

Independent support with tenders, cost management, planning, and delivery where experienced project oversight is required.