Building IT commissioning: a complete checklist for property developers

What building IT commissioning actually covers

IT commissioning is the process of verifying that every technology system in a building has been installed correctly, configured properly and tested to an agreed standard before handover. It's distinct from – though often overlapping with – M&E commissioning, which covers the mechanical and electrical systems that support IT infrastructure: comms room power, UPS, cooling and environmental monitoring.

In practice, the IT commissioning scope for a commercial or hospitality building typically includes structured cabling infrastructure, active network equipment, Wi-Fi, security and access control systems, CCTV, AV and in-room technology. Some of those – particularly access control – sit in a grey zone between IT and M&E, and getting clarity on responsibility early avoids gaps at handover.

The commissioning process should not begin at the end of a project. Testing structured cabling, for instance, is far easier before ceiling tiles go in and walls are plastered. Embedding IT commissioning milestones into the construction programme from the start is the difference between a clean handover and a snag list that runs to weeks of remediation.

Infrastructure testing: cabling and structured cabling certification

Structured cabling is the foundation everything else sits on. If it isn't certified correctly, you can't rely on performance guarantees from active equipment manufacturers – and you'll have no documentary evidence to support any warranty claims that follow.

Certification means FLUKE testing of every permanent link and channel in the installation. Each outlet is tested against the relevant standard – typically TIA-568 or ISO/IEC 11801 – and a pass/fail result generated for each parameter: insertion loss, return loss, near-end crosstalk, propagation delay and delay skew. The test results are saved to the FLUKE unit and exported as a formal report.

What to verify:

• Every permanent link tested and certified – no outlets excluded
• Test reports issued in full, not just a summary pass sheet
• Cable labelling matches the test report and the as-built drawings
• Patch panels terminated correctly and patch leads included in channel tests where required
• Fibre links tested with appropriate power meter or OTDR documentation

A common problem is installers testing a sample rather than every link. The test reports should account for every single outlet on the schedule. If the numbers don't match, push back before accepting the certification.

Active equipment verification

Once the physical infrastructure is certified, the active equipment – switches, routers, firewalls and wireless controllers – needs to be commissioned against a defined network design.

Switch configuration covers port assignments, VLAN setup, trunking between switches and QoS policies if voice or video traffic is involved. Every port should be configured intentionally: unused ports shut down, uplinks configured correctly and management access restricted. Leaving equipment in a default or partially configured state is a security risk and a performance risk.

VLAN segmentation matters both for performance and security. In a hotel, you'd typically expect separate VLANs for guest Wi-Fi, back-of-house staff, POS systems, BMS/building automation and management traffic. In a commercial development, tenants may require logical separation from the start. This needs to be designed and implemented – not left as an assumption.

Firewall commissioning should include a review of the rule set against the agreed policy, confirmation that default credentials have been changed and that remote management access is appropriately secured. WAN connectivity – whether a leased line, FTTP or bonded connection – should be confirmed live and tested for the contracted speed.

What to verify:

• Switch configuration files saved and backed up
• VLANs confirmed against network design document
• Routing verified between VLANs where intended
• Firewall rules reviewed and signed off
• Default passwords changed on all devices
• WAN connectivity live and speed tested
• Management access (SSH, HTTPS) restricted to authorised sources

Wi-Fi coverage and performance testing

A Wi-Fi design produced at planning stage is a prediction. The commissioning process confirms whether reality matches it – and where it doesn't, gives you the evidence to require remediation before handover.

Coverage verification involves walking the entire building with a site survey tool and confirming signal strength meets the design threshold at every point that will be occupied. In most commercial environments that's –65 dBm or better; in high-density hospitality environments you may need tighter thresholds. The survey should capture signal-to-noise ratio as well as RSSI – strong signal in a noisy environment still produces a poor user experience.

Throughput testing checks that usable speeds are achievable at the edge of cells, not just near access points. Roaming behaviour – how a device transitions between access points as it moves through the building – should be tested on both the 2.4 GHz and 5 GHz bands. Sticky clients that fail to roam cleanly are a common complaint in newly commissioned buildings and are usually addressable with band steering and roaming threshold configuration.

What to verify:

• Full site survey coverage map produced against design overlay
• Signal strength meets threshold at all occupied areas
• Throughput tested at coverage edge, not just adjacent to APs
• Roaming tested on 2.4 GHz and 5 GHz
• Channel plan confirmed – no excessive co-channel interference
• SSID configuration matches agreed spec (guest separation, VLAN tagging)
• Captive portal or authentication tested end-to-end if applicable

Security, access control and CCTV systems

Access control and CCTV sit in a boundary zone between IT commissioning and M&E commissioning. The cabling and power are typically M&E; the network connectivity, software configuration and integration are IT. Both need to be commissioned – and someone needs to own the handover between them.

For access control, commissioning means verifying that every door controller is communicating with the head-end system, that access levels have been configured correctly and that entry and exit events are logging as expected. Fail-safe vs fail-secure behaviour on each door should be confirmed against the agreed design – this is a life safety consideration, not just a convenience one.

CCTV commissioning covers camera positioning and coverage verification against the design, image quality at the required resolution and frame rate, recording configuration and retention periods, and remote access if that's part of the specification. Night vision and motion detection should be tested in situ.

What to verify:

• All door controllers online and communicating with head-end
• Access levels configured and tested with physical key fobs or credentials
• Fail-safe/fail-secure behaviour confirmed per door schedule
• All cameras online with confirmed coverage per design
• Recording confirmed – retention period and storage capacity checked
• Remote access tested if required
• System administrator credentials documented and handed over securely

AV, IPTV and in-room technology (for hospitality)

Hospitality developments add a layer of in-room technology commissioning that commercial buildings typically don't have. IPTV systems, in-room controls, telephone handsets and property management system integrations all need to be verified room by room.

IPTV commissioning involves confirming that every television in every room is receiving the correct channel list, that VOD functionality works where specified and that the in-room user interface matches the agreed guest experience. This sounds straightforward but in a 150-room hotel with multiple room categories and TV models, it's a methodical process that takes time.

In-room controls – lighting, heating, do not disturb indicators and room status systems – need to be tested for both the guest-facing function and the integration back to the property management system. A room that shows as vacant on the PMS when a guest has checked in is an operational problem that will surface on the first night of trading if it isn't caught in commissioning.

What to verify:

• IPTV live on all televisions with correct channel list
• VOD and interactive services tested in each room category
• In-room controls functional – lighting, heating, blinds as specified
• DND and room status indicators tested against PMS integration
• Telephone handsets registered and receiving calls
• In-room Wi-Fi confirmed per coverage requirements

As-built documentation and handover pack

The handover pack is as important as the commissioning itself. If the building changes hands, the operator is replaced or a fault develops three years after handover, the documentation is what makes the difference between a quick resolution and an expensive investigation.

As-built drawings must reflect what was actually installed – not the design drawings, not the tender drawings, not what was planned. If cable routes changed during the build, if outlet positions moved, if comms room layout was revised – all of it needs to be captured in the as-built record. Design drawings that are presented as as-builts without being updated are one of the most common and damaging failures in building handover.

The full handover pack should include:

• Structured cabling test certificates (full FLUKE reports, not summaries)
• As-built drawings – cabling routes, outlet schedules, comms room layouts
• Equipment inventory with make, model and serial number for every active device
• Network configuration documentation – IP addressing, VLAN schedule, firewall rule set
• Administrator credentials for all systems (network equipment, Wi-Fi controller, access control, CCTV, IPTV)
• Warranties and manufacturer guarantees
• O&M manuals for all installed systems
• Software licence documentation
• Helpdesk and support contact details for each system

Credentials should be handed over in a secure format – not in a PDF attached to an email. A password manager export or a sealed document with a controlled distribution list is more appropriate, particularly for security-sensitive systems.

Pre-practical completion: the final checklist

In the final weeks before practical completion, a structured walk-through against the commissioning schedule gives you a clear picture of what's done, what's outstanding and what's at risk. This is not the time to discover that cabling certification was never completed or that the access control head-end has never been configured.

The pre-PC checklist should be a live document – updated as items are signed off, with outstanding items tracked against a resolution date and a responsible party. Any item that can't be resolved before PC should be flagged as a defect with a formal retention or bond against it.

Key questions to answer before practical completion:

• Is structured cabling certified? Are the full test reports in hand?
• Is all active equipment configured and tested – switches, firewall, WAN?
• Has a Wi-Fi site survey been completed against the design?
• Are access control and CCTV systems fully commissioned and tested?
• For hospitality: is IPTV live and tested in every room?
• Is the as-built documentation complete and accurate?
• Has the full handover pack been compiled and reviewed?
• Have administrator credentials been prepared for secure handover?
• Is there a support arrangement in place from day one of occupation?

Commissioning isn't a box-ticking exercise. It's the process that gives the developer, the operator and the end user confidence that the building's IT infrastructure will actually work when it needs to. Starting late, cutting scope or skipping documentation creates problems that cost significantly more to fix after handover than before it.