What we do.

Drawing on over 40 years' in-depth experience in multiple sectors, we create sustainable, effective building environments that work for people and processes.

Working in the home counties and London, but also northern territories if required, RHB can provide solutions for you in all sectors. Any size of project from individual homes to £100m + projects can be carried out by our dedicated teams.

Design & Feasibility

We are experienced in the design and feasibility analysis of the following electrical, mechanical, fire safety and security designs.

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Electrical design

  • Electrical power and distribution

  • UPS - Uninterruptible power supplies

  • SCADA LV distribution control systems

  • Earthing systems

  • TV and radio

  • Emergency lighting

  • External lighting

  • Electric vehicle charging

  • Diesel generator systems

  • IT & telecoms

  • Lightning protection

  • Power factor correction

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Mechanical design

  • CCHP gas generator systems

  • Hot and cold water

  • Above ground drainage

  • Natural and mechanical ventilation

  • Air conditioning

  • Gas supplies

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Fire safety

  • Fire damper control systems

  • Fire detection & alarms

  • Fire protection & suppression

  • Refuge alarms

  • Early warning fire detection systems (Aspiration)

  • Smoke ventilation systems

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  • Door access control systems

  • Intruder alarm systems

  • Power factor correction

  • Security and access control

  • Public address

  • CCTV systems

Regulation & Planning

We provide comprehensive advice on compliance with the latest Approved Documents to meet the building regulations.

Approved Documents include inclusive of Part B – Fire Safety, Part F – Ventilation, Part L - Conservation of fuel and power and Part R – in building physical infrastructure communication networks.

The Approved Documents are frequently updated to help the UK reach net zero carbon by 2050, as well as providing a benchmark for sustainability and energy efficiency. Part O - Overheating and Part S – Infrastructure for the charging of electric vehicles are examples of new documents that must be implemented.  To ensure compliance we actively liaise with Building Control throughout each project.

RHB can also provide assistance to clients/developers planning applications by producing Energy and Sustainability statements.

It has proved valuable to the client/developer to bring RHB in during Stage 1 & 2 design, to help advise on plant locations, plant rooms and risers throughout the development in coherence with the preferred energy strategy. This aids in developing drawings and space planning requirements.

Detailed plan with wind turbine
Sustainability trees with skyscraper


Planning Authorities are requiring increasingly lower carbon emissions from new developments in new planning applications.

RHB can offer advice on sustainable technologies such as:

  • Air Source Heat Pumps (ASHP)
  • Ground Source Heat Pumps (GSHP)
  • Photovoltaic Systems (PV)
  • Solar water heating
  • Wind turbines
  • Water recycling
  • Electrical Energy Storage Systems (EESS)

Surveys & Audits

We are experienced in pre-acquisition/condition surveys for leading developers and owner occupiers, particularly identifying and taking account of possible development and value added opportunities.

Dilapidation Surveys

We carry out numerous dilapidation surveys; for owner/occupiers, developers and surveyors.

Pre-Acquisition Surveys

Experienced in pre-acquisition/condition surveys for leading developers and owner occupiers, particularly identifying and taking account of possible development and value added opportunities.

Energy Audits

RHB has undertaken many energy audits and improvement payback feasibilities for our clients.

Thermal Modelling

TAS (Thermal Analysis Software) is vital in this day and age to accurately predict CO2 emissions, energy consumption, occupant comfort & operating costs.

RHB uses the EDSL TAS suite of software to provide 3D building modelling and dynamic thermal simulation. We advise on natural ventilation, prediction of internal temperatures, energy usage, effective plant sizing and also assist architects with façade design and solar control.

Thermal modeling image
BIM drawing of plantroom

BIM and 2D & 3D CAD

Using the very latest AutoDesk Revit MEP software, our dedicated Revit team can produce fully coordinated drawings and models; anything from a simple single room layout to a fully coordinated, multi-level Data Centre.

We have an AutoCAD software subscription, so our software is always up to date.

Covid-19 Ventilation Guidance

Government advice is to get your ventilation and air conditioning systems checked.

Air Conditioning systems should be inspected every 5 years by an accredited energy assessor such as RHB. You could be fined if you don’t!

CIBSE guidance on ventilation, as published during the pandemic, is to check your ventilation and air conditioning system to ensure they are working efficiently and, where possible, increase flow rates.

RHB can advise and offer assistance with the current CIBSE guidance to help prevent the spread and help the wellbeing of the occupants.

Air conditioning
“The government’s Chief Scientific Advisor acknowledged that airborne transmission is a route, particularly in poorly ventilated spaces. As a result, organisations including CIBSE, ASHRAE, REHVA and BESA are advising that workplaces boost ventilation so indoor air is sufficiently diluted to eliminate the potential for airborne viral transmission.”

About us

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