
Reduce Commercial Energy Costs with Professional BMS Installation
Transform your building's performance with our expert Building Management Systems. Reduce energy costs by energy use, achieve net zero compliance, and optimise HVAC controls for maximum efficiency across London, Kent and the South East.
At a glance
A building management system is the control layer that runs a commercial building’s heating, ventilation, cooling and metering from one place. Alpha Controls designs, installs and commissions BMS for commercial buildings, working with Trend, Distech and Siemens equipment. We take a project from design through installation to commissioning and handover.
- What we do
- BMS design, installation, commissioning, and integration with existing plant and controls.
- Where
- London, Kent, Essex, Surrey and Sussex, from our base in Gravesend.
- Who it’s for
- Building owners, managing agents, main contractors and facilities teams responsible for commercial buildings.
- Complete BMS design and installation
- Integration with existing systems and plant
- Energy monitoring and optimisation
- Fault detection and diagnostics
- Compliance with building regulations

Smart Building Automation for Energy Efficiency & Net Zero Compliance
Our Building Management Systems provide complete control over your building's mechanical and electrical systems, delivering significant energy savings, reduced carbon emissions, and helping you achieve your Environmental Social Governance (ESG) goals.
Key Benefits: Energy Savings, Net Zero Compliance & Improved Comfort
Discover how our Building Management Systems can reduce your building's energy use, lower carbon footprint, and bring your office building up to energy regulations UK
Our BMS Installation Process
A structured approach ensuring seamless implementation and optimal results
Further Reading
- What is a Building Management System?
- BMS Installation Cost UK: What to Budget
- Retrofitting Legacy Buildings with Modern BMS
- BMS Installation in Kent: What Building Owners Need to Know
- BMS Installation in London: Costs, Timelines, and What Goes Wrong
- BMS Upgrade in Kent: When Legacy Systems Cost More Than Replacement
- BMS Upgrade in London: Migrating Legacy Controls in Commercial Buildings
Energy Metering and Sub-Metering
- Sub-Metering for Commercial Buildings: A Practical UK Guide
- Water Meter Sub-Metering and BMS Integration
- Schneider EcoStruxure Metering Expert: BMS or Energy Monitor?
- Current Transformer vs Current Switch in a BMS
BMS Services by Area
Case Studies
- 10 Whitechapel — BMS Installation with Trend IQ4 ECO and BACnet/IP
In-house panel build, BACnet/IP integration, CO₂ sensors and chilled beam controls across a commercial office fit-out.
- 20 Gresham Street — Full Six-Floor BMS Rollout
Complete Trend and Distech BMS installation with panel build and cabling across a high-rise commercial building.
Frequently Asked Questions — Building Management Systems
What is a Building Management System and what does it control?
A Building Management System (BMS) is a computer-based control system that monitors and manages a building's mechanical and electrical equipment — including HVAC, lighting, power, fire, and security systems. It collects data from sensors and controllers across the building and uses that data to maintain comfort, minimise energy use, and raise alerts when equipment faults occur. Alpha Controls designs and installs BMS platforms including Trend IQ4, Distech EC-BOS, and Siemens Desigo.
How much does BMS installation cost for a commercial building?
BMS installation costs vary significantly based on building size, number of controlled points, and the complexity of existing plant. A small office fit-out with 20-30 fan coil units might range from £15,000–£40,000. A multi-floor commercial building with AHUs, chillers, and boilers could range from £80,000–£300,000+. Alpha Controls provides free site surveys and detailed fixed-price quotations.
Can a BMS be integrated with an existing HVAC system?
Yes. In most cases, existing HVAC equipment can be integrated into a new or upgraded BMS without replacing the plant itself. Alpha Controls carries out BMS retrofits by installing new DDC controllers, sensors, and actuators alongside existing equipment, then commissioning the complete system. This avoids the capital cost of replacing serviceable plant, and the saving is measured against your own metered baseline at survey stage.
What is the difference between a BMS and a BEMS?
A Building Management System (BMS) focuses on controlling mechanical and electrical systems to maintain comfort and function. A Building Energy Management System (BEMS) is a BMS with particular emphasis on energy monitoring, reporting, and optimisation — including sub-metering, trend logging, and carbon reporting. In practice the terms are often used interchangeably, and most modern BMS platforms include full BEMS functionality. Alpha Controls delivers both.
How long does a BMS installation take?
A small office BMS installation with 20–30 fan coil units typically takes 2–4 weeks. A full commercial building project with AHUs, chillers, boilers, and energy metering can take 8–20 weeks depending on access arrangements and programme constraints. Alpha Controls works around occupied buildings and coordinates closely with main contractors and facilities teams.
What information do you need to quote a BMS installation?
To provide an accurate BMS installation quote, Alpha Controls needs: a points list or I/O schedule (or the mechanical drawings if one has not been produced yet); the controls specification, if one exists; the site address and any access constraints, such as occupied floors or restricted working hours; for retrofit projects, the make and version of the existing system; and your target programme dates. If any of these are not yet available, we can carry out a site survey to establish them as part of the quotation process.
Ready to Make Your Building Net Zero Compliant?
Contact our BMS contractors London today for a free building energy performance assessment and discover how we can help you reduce energy costs and achieve net zero compliance.
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