How London Property Managers Should Vet Contractors Before Appointing Them

Why Contractor Vetting Matters for London Property Managers

A London property manager who instructs a contractor to carry out works on a managed property is taking on a degree of responsibility for the quality and safety of those works. If an unvetted contractor carries out defective electrical work that subsequently causes a fire, or performs gas work without Gas Safe registration and a tenant is injured as a result, the property manager may face civil liability alongside the contractor and the landlord. Regulatory action from the local authority or the Health and Safety Executive can follow where it can be shown that the property manager failed to exercise reasonable care in the selection of contractors.

Beyond legal liability, appointing substandard contractors creates operational problems that are disproportionately costly relative to the apparent saving on labour rates. Defective repairs that need to be redone, complaints from tenants about poor workmanship, and damage caused by contractors who are not adequately insured all generate costs and management time that erode the margin of a property management operation. A well-constructed contractor vetting and approval process takes time to set up but pays dividends over the long term in reduced operational friction and reputational risk.

Mandatory Checks for All Contractors

The minimum checks that London property managers should carry out on all contractors before approving them to work on managed properties are: verification of public liability insurance with a minimum indemnity limit of two million pounds (five million pounds for contractors carrying out higher-risk works such as gas, electrical, and structural work); verification of employers liability insurance if the contractor employs staff; and confirmation that the contractor holds the appropriate trade registration or competence certification for the type of work they will be carrying out.

For gas contractors, this means verifying Gas Safe registration and confirming that the specific engineers who will attend managed properties hold the correct competencies for the appliance types in the portfolio, including central heating boilers, gas fires, and cookers as applicable. Gas Safe registration can be verified on the Gas Safe Register website using the contractor registration number. For electrical contractors, the relevant registration bodies include NICEIC, NAPIT, and SELECT, and registration can be verified on the respective body websites. Property managers should request copies of registration certificates and insurance certificates rather than accepting verbal confirmation, and should record the date on which each document was verified and its expiry date.

Additional Vetting Criteria for Higher-Risk Works

For contractors who will be carrying out higher-risk works, including structural alterations, fire protection works, and works to communal areas of HMOs, additional vetting criteria are appropriate. These may include verification of relevant sector-specific accreditations such as CHAS, Constructionline, or SafeContractor; review of the contractor method statements and risk assessments for the specific works to be carried out; confirmation that the contractor has appropriate supervision and quality control procedures in place; and reference checks with other London property managers or landlords who have used the contractor.

For contractors carrying out works in properties occupied by vulnerable tenants, including elderly tenants or those with disabilities, London property managers should also consider whether the contractor carries out Disclosure and Barring Service checks on their employees. While DBS checks are not legally required for most general maintenance work, they provide an additional layer of reassurance for property managers who have a duty of care to vulnerable occupants.

Maintaining an Approved Contractor List

The output of a contractor vetting process should be a documented approved contractor list that records the details of each approved contractor, the date on which their credentials were last verified, the expiry dates of their insurance and registration certificates, and any performance history. The list should be reviewed at least annually, and contractors whose insurance or registration has lapsed should be suspended from the list until they provide updated documentation. Prestige Engineers provide London property managers with full documentation packs on request, including copies of Gas Safe registration certificates, insurance certificates, and NICEIC electrical registration, making the vetting process straightforward for new property management clients.