Keeping a commercial building compliant in the UK can feel like juggling a dozen moving parts—HVAC servicing, safety checks, landlord/tenant responsibilities, refurbishment works, documentation, and the reality that regulations and best practice don’t stand still.
This 2026 checklist is written for facilities managers, commercial property owners, tenants, office managers, business owners, and health & safety managers who need a practical, human guide to staying on top of compliance across fit out, dilapidations, and air conditioning/HVAC.
We love sharing useful info like this because the biggest compliance problems we see are rarely caused by bad intent—they’re usually caused by missing paperwork, unclear responsibilities, or leaving key checks until the last minute.
Quick disclaimer (worth reading)
This guide is practical, not legal advice. Requirements can vary by building type, use, system size, and contract terms. When in doubt, get professional advice about what applies specifically for your property!
The 2026 compliance mindset: what “good” looks like
Before the checklist, here’s the standard we aim for on every site:
- Clear ownership: Everyone knows who is responsible (landlord vs tenant vs managing agent vs contractor).
- Evidence, not assumptions: If it isn’t documented, it didn’t happen.
- Planned beats reactive: A structured PPM plan reduces risk, cost, and downtime.
- Handover-ready: Every project ends with a clean pack of certificates, drawings, O&M manuals, and sign-offs.
Did you know most compliance headaches show up during a handover, an audit, a lease-end negotiation, or right after an emergency callout—when you’re under pressure and trying to reconstruct what should have been logged months ago?
Section A — Your 2026 “always-on” compliance essentials (every commercial site)
These are the foundations that support everything else—fit outs, dilapidations, and HVAC.
1) Keep a single “Compliance Folder” (digital + accessible)
Create one home for:
- Asset register (HVAC units, fire equipment, emergency lighting, etc.)
- Certificates and inspection reports
- Service logs and engineer worksheets
- Risk assessments and method statements (RAMS)
- O&M manuals and as-fitted drawings
- Warranty documents
- Lease documents relevant to repairs/alterations
Tip people miss: Storing certificates across emails, WhatsApp, and multiple contractors’ portals. When you need it fast, it’s never where you think it is.
2) Maintain an up-to-date asset register
A proper register should include:
- Make/model/serial number
- Location (floor/room/zone)
- Install date and last service date
- Refrigerant type and charge (for AC systems)
- Warranty details
- Responsible party (landlord/tenant)
We’ve learned too that an asset register is the difference between proactive compliance and expensive guesswork.
3) PPM schedule (and proof it happened)
Planned preventative maintenance should cover:
- HVAC/AC servicing and filter changes
- Safety-critical checks (where applicable)
- Seasonal readiness (winter heating, summer cooling)
- Callout response process and escalation
Our engineers always recommend building your PPM around your operational risk: hospitals, manufacturing, and hospitality sites often need tighter schedules than low-occupancy offices.
4) Contractor competence and documentation
Before any works (maintenance, install, fit out), confirm:
- Insurance (public liability, professional indemnity where relevant)
- Qualifications/certifications (e.g., F-Gas for refrigerant work)
- RAMS for the specific site
- Permit-to-work requirements (if applicable)
Tip people miss: Using a general RAMS pack that doesn’t reflect the actual building risks.
Section B — Who’s responsible? (Landlord vs Tenant)
One of the biggest sources of compliance risk is assuming “the other party” is handling it.
Use this table as a practical starting point, then confirm against your lease and any side letters/licences to alter.
| Area | Often Landlord Responsibility | Often Tenant Responsibility | What to check in the lease |
| Building structure & fabric | Roof, external walls, structure | Internal finishes (sometimes) | Repairing obligations and reinstatement clauses |
| Base build HVAC | Central plant, risers, landlord systems | Local controls/FCUs (varies) | Who maintains, who replaces, who pays |
| Tenant-installed AC | Sometimes (rare) | Usually | Alterations clause, reinstatement, maintenance standard |
| Statutory inspections (building-wide) | Often | Sometimes shared | Who arranges, who holds reports |
| Fire safety systems | Often for common parts | Tenant for demised area changes | Responsible person duties and handover requirements |
| Fit out works | Approvals and constraints | Delivery and compliance evidence | Licence to alter, approvals, permitted works |
| Dilapidations | Sets standard at lease end | Returns premises to required condition | Yield up clause, schedules of condition |
Tip: If you’re a facilities manager working for a tenant, don’t rely on “the landlord will have it.” Ask for copies and store them in your compliance folder.
Section C — Air Conditioning & HVAC compliance checklist (2026)
If you manage AC or HVAC, compliance is a mix of legal duties, best practice, and evidence.
1) F-Gas responsibilities (refrigerant handling)
If your systems contain fluorinated greenhouse gases, you’ll typically need:
- Work carried out by appropriately certified engineers
- Records of refrigerant added/removed
- Leak checking (where required)
- Proper disposal and documentation
Did you know missing refrigerant records can become a major issue during audits, acquisitions, and lease-end negotiations—especially when systems have been topped up repeatedly without a clear history.
2) TM44 inspections (air conditioning energy assessments)
Many commercial systems require periodic TM44 inspections (often every 5 years, depending on system size and configuration). Keep:
- TM44 report
- Evidence of actions taken (where recommended)
- Dates for next inspection
Tip people miss: Assuming a TM44 is “optional” because the system still works. TM44 is about energy assessment and compliance, not comfort.
3) HVAC maintenance logs: what “good evidence” includes
A strong service record should show:
- Date/time on site
- Unit(s) serviced
- Checks performed
- Readings (where relevant)
- Parts replaced
- Photos (useful for remote stakeholders)
- Engineer name and certification
Our engineers always push for photo evidence on critical assets—especially rooftop units and plant rooms that few people visit.
4) Indoor air quality and ventilation (practical compliance)
Even when not strictly “certified” by one document, ventilation performance is a real risk area:
- Confirm ventilation is appropriate for occupancy and use
- Keep filters maintained
- Watch for recurring complaints (hot/cold spots, odours, humidity)
Tip people miss: After a fit out, occupancy often increases—but ventilation settings and maintenance schedules don’t.
5) Energy efficiency and performance improvements
This is where compliance and cost control overlap:
- Upgrade controls (smart scheduling, zoning)
- Maintain coils/filters to reduce energy waste
- Consider system upgrades when repairs become frequent
“A lot of AC issues we’re called out to aren’t ‘mystery faults’—they’re the result of missed maintenance and poor records. When the paperwork is right, the system usually performs better too.” — Darrel, React Energy
Section D — Fit Out & Refurbishment compliance checklist (2026)
Fit outs and refurbishments are where compliance can get messy fast—multiple trades, deadlines, and lots of documentation.
1) Start with a clear scope and responsibilities
Before works begin, confirm:
- Who is the duty holder / responsible person (site-specific)
- Who signs off design decisions
- Who owns compliance documentation at handover
- What the landlord requires (licence to alter, approvals)
Tip people miss: Starting strip out or enabling works before landlord approvals are in place.
2) Fit out handover document checklist (what to demand at practical completion)
If you only take one thing from this article, take this: don’t accept handover without evidence.
At practical completion, ask for:
- As-fitted drawings (including any changes made on site)
- O&M manuals for installed systems and equipment
- Commissioning records (HVAC balancing, controls set-up, testing)
- Test certificates relevant to the works (as applicable)
- Warranty documents and warranty start dates
- Asset register update (new assets added, old assets removed)
- Maintenance requirements (what must be done to keep warranties valid)
- Controls strategy / setpoints (especially for HVAC)
- Training / familiarisation for your FM team
- Snagging list and close-out plan with dates and owners
Tip people miss: Getting the handover pack “later.” Later becomes never, and the next audit or breakdown is when you feel it.
“The best fit outs aren’t just the ones that look great on day one—they’re the ones that are usefully innovative, sustainable, compliant, future proof for changing needs and easy to maintain for years after handover.” — James, Calztec Fit Out
3) HVAC changes during fit out
If you change layouts, partitions, occupancy, or usage:
- Re-check heating/cooling loads
- Re-balance ventilation
- Confirm controls and zoning still make sense
- Update drawings and asset lists
We’ve learned too that “small” layout changes can create big comfort and compliance issues—especially in meeting rooms and high-occupancy areas.
4) Fire safety and life safety coordination
Fit outs often affect:
- Fire doors
- Compartmentation
- Alarm devices and coverage
- Escape routes and signage
Tip people miss: Treating fire safety as a late-stage sign-off rather than a design-stage requirement.
5) Site safety and documentation during works
Keep:
- Daily briefings where required
- Permits (hot works, access, isolations)
- Updated RAMS when scope changes
Our engineers always prefer a quick re-brief over “we’ll just do it this once.” That’s how incidents happen.
Section E — Dilapidations compliance checklist (2026)
Dilapidations are where compliance meets contracts. The goal is to avoid disputes and unexpected costs.
1) Understand your lease obligations early
Key questions:
- Who maintains HVAC and building services?
- What standard must the premises be returned to?
- Are alterations permitted—and what reinstatement is required?
Tip people miss: Waiting until the last quarter of the lease to review obligations.
2) Schedule of Condition (SoC)
If you have one, protect it. If you don’t, learn from it.
- Store the SoC with photos and dates
- Use it as your baseline for end-of-lease discussions
3) Plan dilapidations like a project
A practical timeline:
- Review lease + SoC
- Survey site (building fabric + M&E)
- Agree scope with landlord/agent
- Price and programme works
- Deliver works with documentation
- Final sign-off and evidence pack
4) HVAC and dilapidations: the common flashpoints
- Missing service history
- Unclear asset ownership
- Systems altered during fit out without updated drawings
- Units at end-of-life with no plan
Did you know a clean HVAC service history can reduce dilapidations negotiations dramatically because it proves the system was maintained competently.
Section F — Common compliance myths (and what’s actually true)
These myths are responsible for a lot of avoidable risk.
- Myth: “If the system works, we’re compliant.”Reality: Compliance is about evidence, inspection cycles, and competent maintenance—not just whether it turns on.
- Myth: “The landlord/tenant will handle it.”Reality: Responsibility depends on your lease. If you can’t produce evidence, you can still end up paying.
- Myth: “We’ll get the certificates at the end.”Reality: If documentation is not baked into the programme, it gets missed. Ask for it as you go.
- Myth: “A quick callout fixes the problem.”Reality: Callouts fix symptoms. PPM and records prevent repeat failures.
Section G — The most-missed documents (the ones that bite later)
Here’s what we see missing most often when a site is audited, sold, refurbished, or handed back.
- TM44 reports and next-due dates
- Refrigerant records (what was added/removed and when)
- Clear asset register updates after projects
- Commissioning and balancing results after fit outs
- Controls strategy and setpoints (especially after changes)
- Warranty terms and maintenance conditions
- Photos/evidence of works completed (before/after)
- Licence to alter approvals and reinstatement agreements
Section H — Did you know? (the compliance gaps we see most)
A few real-world “gotchas” that catch teams out:
- Did you know a fit out can unintentionally invalidate warranties if maintenance requirements aren’t followed from day one?
- Did you know changing occupancy patterns (more people in fewer days) can create comfort complaints that look like faults—but are actually scheduling and zoning issues?
- Did you know the fastest way to reduce repeat AC callouts is often improving records and asset labelling, not replacing equipment?
- Did you know missing handover documents can turn a simple repair into a longer outage because engineers have to reverse-engineer what was installed?
Section I — What’s changed in the last 6 months? (how to stay ahead)
Without referencing specific legislative updates, here are the real-world shifts we’re seeing across sites:
- Higher scrutiny on documentation: More clients want audit-ready evidence, not just “it’s been serviced.”
- Energy performance pressure: Decision makers are pushing harder for efficiency improvements and measurable savings.
- More complex sites: Hybrid working changes occupancy patterns, which affects HVAC scheduling and comfort complaints.
- Faster project timelines: Fit outs are being delivered quicker, which increases the risk of missed handover documentation.
Tip: Build compliance into your process, not your panic. If you treat documentation as part of delivery, you avoid the end-of-project scramble.
Section J — Role-based compliance checklist (who should do what)
Use this as a practical weekly/monthly/quarterly guide.
Facilities Managers
- Maintain the compliance folder and asset register
- Track service dates, inspections, and next-due items
- Ensure contractors provide worksheets, photos, and certificates
- Escalate repeated faults and request root-cause fixes
- Demand a complete handover pack at practical completion
Commercial Property Owners / Landlords
- Clarify responsibilities in the lease and communicate them
- Keep building-wide statutory reports accessible to tenants/agents
- Approve alterations properly (licence to alter)
- Plan plant replacement and lifecycle budgets
- Keep evidence ready for audits, refinancing, or sale
Commercial Tenants
- Understand your repairing obligations and reinstatement duties
- Keep service records for tenant-installed systems
- Store approvals and licences to alter
- Plan dilapidations early (don’t leave it to the last minute)
- Ensure fit out documentation is complete and stored
Office Managers / Business Owners
- Report comfort issues early (don’t wait for a breakdown)
- Keep a simple log of recurring issues and affected areas
- Support access for maintenance and inspections
- Make sure building changes (layout/occupancy) are communicated
Health & Safety Managers
- Ensure RAMS and permits are in place for works
- Confirm contractor competence and documentation
- Audit the compliance folder periodically
- Ensure handover packs are reviewed and stored
About Adroit Group (and how we help)
Adroit Group delivers commercial property works and building services across the UK—covering commercial fit out and refurbishment, planned and reactive maintenance, HVAC and air conditioning design/installation/servicing, and energy solutions.
Across our specialist businesses—Calztec Fit Out, Calztec Maintain, React Cooling, and React Energy—we support organisations managing offices, warehouses, manufacturing sites, education, healthcare, hospitality, leisure, and public sector buildings.
We love sharing useful info like this because compliance shouldn’t be a mystery.
Quick 2026 checklist summary (copy/paste)
- Compliance folder created and accessible
- Asset register up to date (incl. refrigerant info where relevant)
- PPM schedule set + evidence stored
- Contractor competence verified (certs, insurance, RAMS)
- F-Gas records maintained (where applicable)
- TM44 inspection date tracked (where applicable)
- Fit out handover pack complete (drawings, O&M, commissioning, warranties)
- Lease obligations reviewed early for dilapidations
- Schedule of Condition stored and referenced
- HVAC reviewed after occupancy/layout changes
Need to start a Planned Maintenance (PPM) contract, request a Fit Out Proposal or a dilapidations quote?
Contact the Calztec team on – 0330 113 4500
Need to service your Commercial AC or install a new HVAC system contact – 0330 912 8325