--- title: "BMS Contractor Croydon - East Croydon Towers, Retail & Public Estate | BIAV Controls" description: "BMS installation, service and 24/7 call-out across the London Borough of Croydon: East Croydon commercial, Purley, South Norwood, Thornton Heath and Coulsdon. 2-hour SLA for contract clients." lang: en-GB json-ld: | [ { "@context": "https://schema.org", "@type": "Organization", "@id": "https://biav-controls.co.uk/#organization", "name": "BIAV Controls Limited", "alternateName": "BIAV Controls", "url": "https://biav-controls.co.uk/", "logo": "https://biav-controls.co.uk/favicon-192.png", "image": "https://biav-controls.co.uk/favicon-192.png", "telephone": "07782 247022", "email": "accounts@biav-controls.co.uk", "address": { "@type": "PostalAddress", "streetAddress": "52 Selah Drive", "addressLocality": "Swanley", "addressRegion": "Sevenoaks", "postalCode": "BR8 7WD", "addressCountry": "GB" }, "sameAs": [ "https://www.instagram.com/biav_controls", "https://www.linkedin.com/in/bradley-thomas-62a0901b6/", "https://share.google/s8v7xuBhziXutqTyI" ], "founder": { "@type": "Person", "name": "Bradley Thomas" }, "identifier": { "@type": "PropertyValue", "propertyID": "Companies House", "value": "16344714" } }, { "@context": "https://schema.org", "@type": "WebSite", "@id": "https://biav-controls.co.uk/#website", "url": "https://biav-controls.co.uk/", "name": "BIAV Controls", "alternateName": "BIAV Controls Limited", "description": "London BMS specialists: Building Management System installation, service, panels and 24/7 call-out.", "inLanguage": "en-GB", "publisher": { "@id": "https://biav-controls.co.uk/#organization" }, "potentialAction": { "@type": "SearchAction", "target": "https://biav-controls.co.uk/?q={search_term_string}", "query-input": "required name=search_term_string" } }, { "@context": "https://schema.org", "@type": "LocalBusiness", "@id": "/service-areas/croydon#localbusiness", "name": "BIAV Controls Limited, BMS contractor in Croydon", "description": "BMS installation, service and 24/7 call-out across the London Borough of Croydon: East Croydon commercial, Purley, South Norwood, Thornton Heath and Coulsdon. 2-hour SLA for contract clients.", "telephone": "07782 247022", "email": "accounts@biav-controls.co.uk", "url": "/service-areas/croydon", "address": { "@type": "PostalAddress", "streetAddress": "52 Selah Drive", "addressLocality": "Swanley", "addressRegion": "Sevenoaks", "postalCode": "BR8 7WD", "addressCountry": "GB" }, "areaServed": [ { "@type": "AdministrativeArea", "name": "the London Borough of Croydon" }, { "@type": "Place", "name": "East Croydon" }, { "@type": "Place", "name": "Purley" }, { "@type": "Place", "name": "South Norwood" }, { "@type": "Place", "name": "Thornton Heath" }, { "@type": "Place", "name": "Coulsdon" }, { "@type": "Place", "name": "Addiscombe" }, { "@type": "Place", "name": "Selsdon" } ], "openingHours": "Mo-Su 00:00-23:59", "priceRange": "Quote on application" }, { "@context": "https://schema.org", "@type": "FAQPage", "mainEntity": [ { "@type": "Question", "name": "Do you serve the London Borough of Croydon?", "acceptedAnswer": { "@type": "Answer", "text": "Yes: every Croydon postcode: CR0, CR2, CR7, CR8, CR9. Croydon town, East Croydon, Purley, South Norwood, Thornton Heath, Coulsdon, Addiscombe and Selsdon are all covered." } }, { "@type": "Question", "name": "How fast can you reach Croydon?", "acceptedAnswer": { "@type": "Answer", "text": "Contract clients receive a 2-hour on-site SLA. Croydon sits 35–50 minutes off-peak from our Swanley office. Reactive enquiries prioritised within 24 hours." } }, { "@type": "Question", "name": "How much does BMS work cost in Croydon?", "acceptedAnswer": { "@type": "Answer", "text": "Quote on application in writing after a site or specification review. Tower work, retail work and public-sector work all scope differently: every quote is fixed against the actual site, not a rate card." } }, { "@type": "Question", "name": "Do you offer 24/7 BMS emergency cover in Croydon?", "acceptedAnswer": { "@type": "Answer", "text": "Yes. Phones answered 24/7 by an engineer. Contract clients receive a 2-hour on-site response." } }, { "@type": "Question", "name": "Can you work on East Croydon commercial towers?", "acceptedAnswer": { "@type": "Answer", "text": "Yes. Riser chiller sequencing, floor VAV, out-of-hours setpoint audits, tenant-comfort tuning, panel replacement and full BMS upgrades all sit inside our scope." } }, { "@type": "Question", "name": "Can you support Croydon public estate and schools?", "acceptedAnswer": { "@type": "Answer", "text": "Yes. Written service reports, RAMS, full insurance documentation and cut-overs planned around school holidays and operating hours." } }, { "@type": "Question", "name": "Which BMS platforms do you work on in Croydon?", "acceptedAnswer": { "@type": "Answer", "text": "Tridium Niagara, Trend, Siemens, Distech, Cylon, Honeywell and any BACnet/Modbus/LonWorks device, open protocol only." } }, { "@type": "Question", "name": "Are you fully insured?", "acceptedAnswer": { "@type": "Answer", "text": "£20M public liability, £10M employers' liability, £10M professional indemnity. Certificates issued in advance of mobilisation." } } ] }, { "@context": "https://schema.org", "@type": "BreadcrumbList", "itemListElement": [ { "@type": "ListItem", "position": 1, "name": "Home", "item": "/" }, { "@type": "ListItem", "position": 2, "name": "Service Areas", "item": "/service-areas" }, { "@type": "ListItem", "position": 3, "name": "Croydon", "item": "/service-areas/croydon" } ] } ] --- 52 Selah Drive, Swanley, BR8 7WD 24/7 phones answered · 2hr SLA response [accounts@biav-controls.co.uk](mailto:accounts@biav-controls.co.uk)[](https://www.instagram.com/biav_controls)[](https://www.linkedin.com/in/bradley-thomas-62a0901b6/) [![BIAV Controls](/__l5e/assets-v1/aa32365b-edd5-4700-8950-51fcbb3a024c/biav-logo.webp)](/) Services Service Areas [About](/about) Our Work [Contact](/contact) [07782 247022](tel:+447782247022)[Request a Quote](/contact) ![Croydon skyline at dusk with No.1 Croydon (NLA Tower) and tram wires across the town centre](/assets/croydon-BmSkUf4a.jpg) BMS contractor · Croydon · CR0, CR2, CR7, CR8, CR9 # BMS contractor across Croydon. Towers, retail, public estate. East Croydon is one of the largest commercial cores outside central London, and it sits alongside a huge public estate and a dense residential borough. We cover it end-to-end with local engineers. [Request a Quote](/contact) [Call 07782 247022](tel:+447782247022) 2-hour on-site SLA for contract clients 24/7 phones answered by an engineer Quote on application, in writing 1. [Home ](/) 2. [Service Areas](/service-areas) 3. Croydon 13+ Years hands-on BMS experience 2 hr On-site SLA for contract clients 24/7 Phones answered, every day £20M Public liability insurance BS EN 61439 Panel build standard Local relevance ## BMS engineers whoactually know Croydon. Based in Swanley on the London/Kent border: 35–50 minutes off-peak from Swanley. We work across East Croydon, Purley, South Norwood, Thornton Heath and the wider the London Borough of Croydon on installation, service, maintenance and reactive call-out. We cover Croydon All Croydon postcodes: CR0, CR2, CR7, CR8 and CR9. Croydon town, East Croydon, Purley, South Norwood, Thornton Heath, Coulsdon, Addiscombe, Selsdon and Sanderstead sit inside our normal working area. Response times Contract clients receive a 2-hour on-site SLA; Croydon is 35–50 minutes off-peak from Swanley. 24/7 phones answered by an engineer. Croydon property types East Croydon commercial towers, No. 1 Croydon-style Grade A office stock, mid-height 1960s and 70s commercial blocks, retail centres and department stores, borough public estate, primary and secondary schools, hospitals and clinics, plus dense residential blocks along the tram corridor. Common BMS needs in Croydon Chiller and AHU control on mid-rise commercial towers, retail HVAC and refrigeration alarms, school and public-sector PPM, plant sequencing on hospital estate and reactive attendance on commercial towers when tenant comfort is affected. On the ground in Croydon ## A closer look at how we work across the London Borough of Croydon. BIAV Controls is a specialist Building Management System contractor based in Swanley, on the London/Kent border. We install, service, maintain and reactively cover BMS across Croydon, the whole of the London Borough of Croydon, including East Croydon, Purley, South Norwood, Thornton Heath and the surrounding CR0, CR2, CR7, CR8, CR9 postcode area. The business was set up to deliver a specific standard of BMS work: open protocol, transparent scoping, written documentation, and engineers who actually turn up when they said they would. Our engineers have 13+ years of hands-on BMS experience across every major open-protocol platform: Tridium Niagara, Trend, Siemens (Desigo and Talon), Distech, Cylon and Honeywell, plus any BACnet, Modbus or LonWorks device that touches a plantroom. That platform coverage matters in Croydon because the borough's estate is mixed: modern buildings tend to be on current Tridium supervisors, mid-generation buildings run legacy Trend, and older civic and industrial stock often sits on Siemens or Cylon. One contractor comfortable across all of them saves you the pain of stitching together sub-contractors and losing accountability at the boundaries. Every project we deliver in Croydon carries the same commercial and technical guardrails. Public liability is insured to £20M, employers' liability to £10M and professional indemnity to £10M. Control panels are designed in-house and manufactured to BS EN 61439 by our panel-shop partner. Installed workmanship carries a 1-year warranty. Pricing is quote on application, issued in writing after a real site or specification review, not pulled from a rate card, and we do not tie buildings to a proprietary supervisor. Contract clients across South London receive a 2-hour on-site SLA and 24/7 phone cover answered by an engineer rather than an answer service. Reactive callers without a contract are prioritised within 24 hours. For Croydon specifically, 35–50 minutes off-peak from Swanley, so response commitments are grounded in real travel time rather than optimistic mapping. If a site sits inside the CR0, CR2, CR7, CR8, CR9 postcode range, we are already routing engineers past it most working days. Beyond Croydon itself, our regular coverage extends across South London and into neighbouring boroughs, including Bromley, South East London, Orpington, so multi-site clients get consistent delivery, one contractor and one paper trail across their estate. If you're weighing us against a national roll-up, the practical difference is that our office is a short drive from your building, our engineers know the borough's road network and access regimes, and there is no chain of sub-contractors between the person you speak to and the person on-site. Services available ## Every BMS service we offer,delivered in Croydon. All nine BMS services are available across the London Borough of Croydon. Click through for full scope, process and FAQs on each. [![BIAV Controls laptop running Trend IQVision alongside a legacy Trend IQ BMS panel during a scheduled service visit](/__l5e/assets-v1/be0f2c1f-fae5-4e12-af7f-63546d418c76/This_is_a_service_visit_on_a_old_Bms_system.jpeg) BMS Service in Croydon A BMS service is a planned visit by a controls engineer who checks every sub-system on the Building Management System: sensors, actuators, dampers, valves, control loops, schedules, alarms, network health and supervisor software, then corrects setpoints, resolves faults and issues a written service report. View service ](/services/bms-service)[![Six Hamworthy Stratton condensing boilers on a new LTHW system, all controlled from the BMS by BIAV Controls](/__l5e/assets-v1/b84023a1-9470-4e8b-aa95-9a52fd602068/Recent_project_works_LTHW_system_6_boilers_all_controlled_from_Bms2.jpeg) BMS Installation in Croydon A BMS installation is the full end-to-end delivery of a Building Management System: design of the control philosophy, manufacture of controls panels to BS EN 61439, containment and cabling, controller mounting, sensor and valve fit-off, software engineering, graphics build, commissioning, witness testing and formal handover. View service ](/services/bms-installation)[![Trend IQView4 HMI showing an active AHU Common Fault alarm attended on a 24/7 BMS call-out](/__l5e/assets-v1/52077a86-d494-4089-a291-676bc7275e13/Another_call_out_for_a_alarm_on_AHU_system.jpeg) BMS Call Out in Croydon A BMS call-out is an urgent visit to diagnose and rectify a fault on the Building Management System or the plant it controls: no-heat, no-cooling, comms failure, supervisor crash, alarm storm, network dropout or safety interlock trip. View service ](/services/bms-call-out)[![Chilled water secondary pump and chilled-beam BMS mimic developed at pre-design stage](/__l5e/assets-v1/6dbf1d01-ef52-4dbc-aeaf-7015f1dcfbf8/Software_Graphic_Designs3.jpeg) BMS Pre-Design in Croydon BMS pre-design is the engineering document set that defines exactly how a Building Management System will control every piece of plant on a project: point counts, control sequences, setpoints, alarm strategy, interlocks, protocol strategy, graphics scope and commissioning checklist. View service ](/services/bms-pre-design)[![70 Gray's Inn Road, London: a BIAV Controls end-to-end BMS site optimisation project](/__l5e/assets-v1/aa1cf3e5-3a17-4777-9d1b-1bad04b277f2/Completed_full_site_optimisation_works_at_70_greys_in_and_added_touch_15_inch_touch_display_screens_to_7_tentsnt_floors_to_give_them_full_control_of_there_system4.jpeg) BMS Projects in Croydon A BMS project is single-point delivery of every controls scope on a construction or refurbishment programme: pre-design, panel manufacture, electrical installation, controller and sensor fit-off, software engineering, graphics, commissioning, witness testing, handover and post-handover service. View service ](/services/bms-projects)[![BIAV-designed BMS control panel with INNON HMI, boiler and secondary pump status, built to BS EN 61439](/__l5e/assets-v1/e87b4a38-bbb0-4601-a8f1-37d98d28bbd4/Panel_controlling_the_boilers.jpeg) BMS Panel Manufacturing in Croydon BMS panel manufacturing is the design and build of the enclosures that house the Building Management System's controllers, contactors, protection, power supplies, network devices and terminations, engineered specifically for the plant they control and the site they will live in. View service ](/services/bms-panel-manufacturing)[![AHU02A BMS mimic graphic designed by BIAV Controls for Royal London Hospital (NHS Skanska)](/__l5e/assets-v1/46ed4ee4-5ecc-4e16-a126-7a929733520b/Software_Graphic_Designs2.jpeg) BMS Software & Graphics in Croydon BMS software and graphics is the code and visual front-end that sits on top of a Building Management System: controller programming, supervisor engineering (Tridium Niagara, Distech EC-Net and equivalents), graphics build, alarm schema, trends, histories, schedules and dashboards. View service ](/services/bms-software-graphics)[![iSMA-Niagara BMS controller with dressed terminals and containment on a school ASHP electrical installation](/__l5e/assets-v1/7699f4cc-ce46-4c3d-a017-f993de9cacc8/Small_project_from_a_air_source_heat_pump_system_in_local_school1.jpeg) BMS Electrical Installation in Croydon BMS electrical installation is the containment, cabling, terminations and testing that physically connects a Building Management System to the plant it controls, from panel to controller to field device, plus power distribution and safety earthing. View service ](/services/bms-electrical-installation)[![Commercial LTHW plantroom with Grundfos pumps and Siemens actuators maintained under a PPM contract](/__l5e/assets-v1/21610a49-a752-4c3d-9f49-44ce2b9dd4f4/Another_service_visit_on_a_old_system3.jpeg) BMS Maintenance in Croydon BMS maintenance is a contracted programme of planned service visits, remote monitoring, reactive call-out and post-incident review, with defined SLAs and written reports, that keeps a Building Management System delivering the outcomes it was designed to deliver. View service ](/services/bms-maintenance)[![15-inch touch display screens installed on tenant floors at 70 Gray's Inn Road as part of a BMS site optimisation project](/__l5e/assets-v1/8cb152a7-db95-4bb7-99da-1907b1d8e0d9/Completed_full_site_optimisation_works_at_70_greys_in_and_added_touch_15_inch_touch_display_screens_to_7_tentsnt_floors_to_give_them_full_control_of_there_system1.jpeg) BMS Energy Optimisation in Croydon BMS energy optimisation is a structured programme of audit, correction and verification carried out on an existing Building Management System. View service ](/services/bms-energy-optimisation) Why choose us in Croydon ## Concrete reasons,not marketing lines. Every claim on this page is drawn from things we can evidence: our insurances, our SLAs, our warranty terms and the standards our panels and partner electricians work to. Comfortable on commercial towers East Croydon mid-rise towers carry many of the same control challenges as City buildings: riser chillers, floor-by-floor VAV, out-of-hours setpoints. Our engineers work on both estates and translate between them. Open-protocol only Croydon commercial estate is heavily Tridium, Trend and Siemens. We install, service and integrate all three (plus Distech and Cylon) on open protocol, with no proprietary supervisors and no lock-in. Full insurance and documentation £20M PL, £10M EL and £10M PI, panels to BS EN 61439, written reports on every visit, 1-year workmanship warranty. Public-sector procurement teams get the paperwork they need. Local problems, honestly ## BMS issues we seeacross Croydon. Croydon's BMS estate is a barbell: a commercial core running towers with modern control expectations, and a very large public and residential estate on legacy control systems with variable levels of PPM cover. Tower riser chiller sequencing Multi-tenant risers on East Croydon towers frequently run all chillers against a lead-lag strategy that no longer matches the tenant occupancy pattern. Retuning the sequence typically frees measurable capacity and cuts energy. Retail refrigeration and HVAC alarms Croydon retail centres generate large volumes of nuisance alarms; a well-tuned BMS suppresses noise without hiding real faults. That's a control-strategy job, not a hardware one. Public-estate PPM gaps Council and public-sector buildings across the borough often have BMS installed without active service. We structure PPM contracts around SLA and reporting requirements, not vendor sales cycles. Tram-corridor residential comfort complaints New-build residential blocks along the tram corridor increasingly generate comfort complaints in year one. Almost always a controls tuning problem, rarely a mechanical one. Our process ## How we deliver BMS workacross Croydon. 1. Step 01 Enquiry & scoping call We take the site details for Croydon, current issues and any relevant plant or supervisor information, usually inside a short call. 2. Step 02 Site or specification review For anything beyond routine reactive work we visit or review drawings before quoting. No 'from' prices, no per-square-metre guessing. 3. Step 03 Written fixed quote Quote on application, in writing, with a fixed scope, deliverables and programme. Insurances and RAMS supplied on request. 4. Step 04 Mobilisation & delivery Engineers mobilised to Croydon with permits, RAMS and, where relevant, panel design and manufacture to BS EN 61439 via our panel-shop partner. 5. Step 05 Commissioning & handover Points schedule, controls narrative, as-installed drawings and O&M documentation issued at handover. Nothing left informal. 6. Step 06 Aftercare & PPM 1-year workmanship warranty on installed works. PPM contracts with 2-hour SLA and written service reports available across the borough. Regional coverage ### Also working nearby to Croydon. Our engineers cover South London and the wider London & South East region on the same terms: 2-hour SLA for contract clients, 24/7 phones, quote on application. [View all service areas](/service-areas) [ South East London BMS in Bromley BR1, BR2, BR3, BR4, BR5, BR6, BR7, BR8 ](/service-areas/bromley)[ South East London BMS in South East London SE1–SE28 · BR · DA ](/service-areas/south-east-london)[ South East London BMS in Orpington BR5, BR6 ](/service-areas/orpington) FAQs ## BMS in Croydon,questions answered. Anything not covered here? Call us on [07782 247022](tel:+447782247022). Pricing BMS work in Croydon is quoted on application, issued in writing after a site or specification review. No 'from' prices, no per-square-metre pricing, no proprietary lock-in. ### Do you serve the London Borough of Croydon? + Yes: every Croydon postcode: CR0, CR2, CR7, CR8, CR9. Croydon town, East Croydon, Purley, South Norwood, Thornton Heath, Coulsdon, Addiscombe and Selsdon are all covered. ### How fast can you reach Croydon? + Contract clients receive a 2-hour on-site SLA. Croydon sits 35–50 minutes off-peak from our Swanley office. Reactive enquiries prioritised within 24 hours. ### How much does BMS work cost in Croydon? + Quote on application in writing after a site or specification review. Tower work, retail work and public-sector work all scope differently: every quote is fixed against the actual site, not a rate card. ### Do you offer 24/7 BMS emergency cover in Croydon? + Yes. Phones answered 24/7 by an engineer. Contract clients receive a 2-hour on-site response. ### Can you work on East Croydon commercial towers? + Yes. Riser chiller sequencing, floor VAV, out-of-hours setpoint audits, tenant-comfort tuning, panel replacement and full BMS upgrades all sit inside our scope. ### Can you support Croydon public estate and schools? + Yes. Written service reports, RAMS, full insurance documentation and cut-overs planned around school holidays and operating hours. ### Which BMS platforms do you work on in Croydon? + Tridium Niagara, Trend, Siemens, Distech, Cylon, Honeywell and any BACnet/Modbus/LonWorks device, open protocol only. ### Are you fully insured? + £20M public liability, £10M employers' liability, £10M professional indemnity. Certificates issued in advance of mobilisation. Request a quote: Croydon ## Send us the spec.We'll come back with a fixed scope. Every Croydon enquiry is scoped and quoted in writing: no 'from' prices, no hidden variations, no proprietary lock-in. Response within one working day, sooner for anything urgent. [Call 07782 247022](tel:+447782247022)[Full contact details](/contact) 24/7 phones answered £20M PL / £10M PI cover 1-year workmanship warranty BMS enquiry · Croydon Tell us about the site. ![BIAV Controls](/__l5e/assets-v1/aa32365b-edd5-4700-8950-51fcbb3a024c/biav-logo.webp) Family-run BMS specialist delivering smart, energy-efficient solutions to support net zero buildings across London and the South East. Bespoke design, BS EN 61439 panels, open-protocol systems. [07782 247022 ](tel:+447782247022)[accounts@biav-controls.co.uk](mailto:accounts@biav-controls.co.uk) 52 Selah Drive Swanley, Sevenoaks BR8 7WD [](https://www.instagram.com/biav_controls)[](https://www.linkedin.com/in/bradley-thomas-62a0901b6/) Services - [BMS Service](/services/bms-service) - [BMS Installation](/services/bms-installation) - [BMS Call Out](/services/bms-call-out) - [BMS Pre-Design](/services/bms-pre-design) - [BMS Projects](/services/bms-projects) - [BMS Panel Manufacturing](/services/bms-panel-manufacturing) - [BMS Software & Graphics](/services/bms-software-graphics) - [BMS Electrical Installation](/services/bms-electrical-installation) - [BMS Maintenance](/services/bms-maintenance) - [BMS Energy Optimisation](/services/bms-energy-optimisation) Service Areas - [Swanley](/service-areas/swanley) - [Dartford](/service-areas/dartford) - [Sevenoaks](/service-areas/sevenoaks) - [Orpington](/service-areas/orpington) - [Sidcup](/service-areas/sidcup) - [Bexley](/service-areas/bexley) - [Bromley](/service-areas/bromley) - [Greenwich](/service-areas/greenwich) - [Croydon](/service-areas/croydon) - [Gravesend](/service-areas/gravesend) - [South East London](/service-areas/south-east-london) - [City of London](/service-areas/city-of-london) - [Canary Wharf](/service-areas/canary-wharf) Company - [About](/about) - [Our Work](/our-work) - [Case Studies](/case-studies) - [FAQs](/faq) - [Contact](/contact) - [Leave a review](https://search.google.com/local/writereview?placeid=ChIJDUK3gbWt2EcRTEnbDZS2st8) Hours: 24/7 Company No. 16344714 © 2026 BIAV Controls Limited. All rights reserved. [Privacy Policy](/privacy-policy)[Terms & Conditions](/terms-conditions)[Cookie Policy](/cookie-policy) £20M PL · £10M EL · £10M PI [Call now](tel:+447782247022)[Request a Quote](/contact) We use strictly necessary cookies to run this site, and optional cookies for live chat. See our [Cookie Policy](/cookie-policy). AcceptReject