About
Independent specialists in commercial energy compliance.
We help building owners, occupiers and developers meet every UK energy regulation — and use compliance as a springboard to genuine carbon reduction.
15+ years' experience delivering multi-site property, compliance and energy projects across national estates.
Our story
Oak Tree Rule was founded by chartered surveyors and energy engineers tired of seeing compliance reports filed and forgotten. We deliver every TM44, EPC, ESOS and SBEM job to the standard our regulators demand — but we also leave clients with a practical roadmap they can actually use.
Our Managing Director brings rare client-side strategic experience, having previously led the construction function — heading up a team of building surveyors, engineers and facilities managers — with responsibility for capital projects, energy, compliance and sustainability across an 800+ site portfolio within a multi-billion-pound group. That means we've sat in your seat — owning the budgets, the board reporting, contractor frameworks and the regulatory risk — and we bring that operational perspective to every engagement.
Today we work across the UK with single-property owners, multi-site occupiers, property funds and main contractors.
Accredited
CIBSE, Elmhurst, CIOB members
Team
20+ assessors UK-wide
Carbon
18kt CO₂e saved for clients
Focus
Commercial property only
Our values
Independence
We don't sell equipment. Our advice is impartial and based purely on what's right for your building.
Pragmatism
Every recommendation is costed, ranked and tied to a real business outcome.
Accountability
Lead Assessor sign-off on every report, with a named project lead from day one.
Accreditation
CIOB Chartered Building Consultancy
Oak Tree Rule is a member of the Chartered Institute of Building's Chartered Building Consultancy scheme — an independent mark of professionalism, ethical standards and technical competence in the built environment. Clients can be confident every engagement is delivered under the CIOB's Code of Professional Conduct.
Who we work with
We support organisations responsible for multi-site property, from national operators to single-asset landlords.
Automotive estates
Retail portfolios
Industrial property
Commercial landlords
Multi-site occupiers
Ready to start your project?
Get a tailored quote within one working day.