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Managing Contractors

Property maintenance depends on reliable contractors. A landlord's ability to manage a portfolio efficiently is, in large part, a function of the quality of their contractor network. Finding, vetting, and retaining good tradespeople — plumbers, electricians, builders, gas engineers — is as…

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Managing Contractors

The Contractor Relationship

Property maintenance depends on reliable contractors. A landlord's ability to manage a portfolio efficiently is, in large part, a function of the quality of their contractor network. Finding, vetting, and retaining good tradespeople — plumbers, electricians, builders, gas engineers — is as important as any financial decision in property investment.

The contractor market rewards loyalty and reliability. A landlord who pays promptly, provides clear briefs, and gives recurring work becomes a preferred client. Preferred clients get faster responses, better pricing, and more honest assessments when something is genuinely serious versus merely cosmetic.

Vetting Contractors

Before instructing a contractor for substantive work, verify their qualifications and insurance:

Mandatory checks for regulated trades:

  • Gas engineers must be registered on the Gas Safe Register (verifiable online). Working with an unregistered engineer is illegal and invalidates insurance.
  • Electricians doing notifiable electrical work must either be registered with a competent persons scheme (NICEIC, NAPIT, or equivalent) or obtain local authority building regulations approval. An EICR from an unqualified person is not compliant.
  • Oil heating engineers should hold OFTEC registration.

General checks:

  • Public liability insurance (minimum £1 million; £2 million preferable for larger jobs)
  • References from other landlords or letting agents — tradespeople used frequently by agents have a proven track record
  • Reviews on platforms like Checkatrade or Rated People, discounted for recency bias

Avoid contractors who demand large cash deposits before starting work, are reluctant to provide written quotes, or cannot provide proof of insurance. These are reliable warning signs.

Scoping and Instructing Work

Clear written instructions reduce misunderstandings, protect both parties in a dispute, and create a record for insurance purposes. A proper job scope includes:

  • Description of the problem or work required
  • Specific materials specified where relevant (e.g., "replace with copper pipework, not plastic push-fit")
  • Access arrangements and timing
  • Expected completion date
  • Agreed price or quote basis (fixed price vs. time and materials)

For larger jobs (above £500–1,000), obtain at least three quotes. For emergency repairs, price comparison is less practical — the priority is resolution. Having a pre-approved emergency contractor for each trade type (plumber, electrician, locksmith) avoids scrambling under pressure.

Managing Costs and Quality

Snagging: after any completed job, inspect the work before final payment. A professional contractor will not object to this. Check that the fix addresses the root cause, not just symptoms. A replaced tap washer that doesn't investigate why the fitting corroded may result in the same call-out within a year.

Callout charges: many tradespeople charge a callout fee that covers the first hour, then an hourly rate. Batching minor repairs into a single visit (all properties or all issues in one address at once) reduces total callout costs.

Trade accounts: once a preferred contractor relationship is established, payment terms can be negotiated — net 14 or net 30 payment rather than immediate cash, which aids cash flow management.

Educational content only. Not financial, investment, tax or legal advice. Learn more

Quiz me on this
Why is it important to verify that a gas engineer is registered on the Gas Safe Register?
  1. It is a quality assurance check that improves the likelihood of good workmanship, but is not legally required
  2. The Gas Safe Register determines the pricing structure for gas work, so verification allows cost comparison
  3. ✓ Using an unregistered gas engineer is illegal, invalidates insurance, and means the resulting Gas Safety Certificate (CP12) is non-compliant, exposing the landlord to criminal liability
  4. Gas Safe registration is only required for new installations, not for annual servicing
What is the advantage of becoming a "preferred client" for contractors?
  1. Preferred clients receive a statutory discount under housing regulations for repeated use of the same contractor
  2. ✓ Contractors prioritise preferred clients — those who pay promptly, provide clear briefs, and offer recurring work — giving them faster response times, better pricing, and more honest assessments
  3. Preferred clients can legally delay payment for up to 60 days under commercial contract law
  4. Being a preferred client exempts the landlord from providing written scopes of work
What does "snagging" mean in the context of managing property repairs?
  1. The process of identifying defects in a new-build property during the builder's warranty period
  2. ✓ Inspecting completed contractor work before final payment to verify that the fix addresses the root cause and meets the agreed specification
  3. A legal process for withholding contractor payment in the event of a dispute
  4. The practice of requesting multiple quotes for the same job to drive down pricing
Why is batching minor repairs into a single contractor visit financially efficient?
  1. Batching qualifies for VAT exemption on property repair costs
  2. ✓ It reduces total callout charges — each visit typically includes a fixed callout fee covering the first hour — so combining multiple small jobs in one visit avoids paying that fee multiple times
  3. Batching repairs allows landlords to claim a larger maintenance deduction in their tax return
  4. Tradespeople legally cannot charge more than one callout fee per property per month