The short answer

Before hiring a plumber, define the task clearly and ask what access, isolation, testing, making good and connected trades are included. A simple visible leak is different from concealed pipework, bathroom changes or work near gas appliances.

Where gas work is involved, Gas Safe responsibility must be confirmed with an appropriately registered engineer. Where electrical work is affected, the electrical responsibility must also be clear.

  • Define the task and affected rooms.
  • Confirm concealed access and making good.
  • Separate gas and electrical responsibilities.
  • Ask how testing and handover are recorded.

Clarify the task and access

A useful enquiry explains whether the work is repair, replacement, alteration, bathroom or kitchen support, utility work, drainage connection or investigation of a concealed issue.

Access can change the scope. Floors, boxing, tiled areas, fitted furniture and finished decoration may all affect what can be reached and what needs making good.

  • What is visible and what is concealed?
  • Which finishes may need opening?
  • Who is responsible for reinstatement?
  • What product or layout decisions are still open?

Keep regulated work separate

Gas appliance, boiler or gas pipework tasks require the correct Gas Safe responsibility. Plumbing near electrical systems, pumps, controls or bathroom zones may also need electrical input.

Do not assume one trade can lawfully or competently complete every connected task unless responsibilities are confirmed.

  • Ask who handles gas work.
  • Ask who handles electrical isolation or connection.
  • Confirm certification or documentation requirements where relevant.
  • Do not let convenience override regulated boundaries.

Compare quotations by scope, not price labels alone

Unverified price labels or generic figures can mislead. Compare what is included: access, materials, fixtures, isolation, testing, waste, making good, protection, parking, timing and VAT treatment where applicable.

For occupied or high-value homes, protection and communication can be as important as the physical repair.

  • Check product supply and responsibility.
  • Clarify protection of floors and finishes.
  • Ask how leaks or pressure tests are checked.
  • Record exclusions and provisional items.

Checklist

Plumbing enquiry checklist

Prepare the information that makes a plumbing quotation clearer and safer to compare.

  • Room and task description
  • Photographs of visible issue or intended area
  • Whether pipework is concealed
  • Known product or fixture choices
  • Gas appliance or boiler involvement
  • Electrical interfaces
  • Access, parking or building constraints
  • Making-good expectations
  • Preferred timing and occupancy constraints

FAQs

Hiring a plumber questions

  • Only an appropriately Gas Safe registered engineer should carry out gas work. The responsibility needs confirming before the job is agreed.
  • It should be clarified. Plumbing access can disturb boxing, flooring, tiling or decoration, and reinstatement may be a separate scope.
  • Ask for a clear scope first. Some concealed issues may need provisional assumptions or staged investigation rather than a simple fixed figure.
  • The relevant test depends on the work, but pressure, leaks, isolation, drainage and product operation may need checking and recording.

Plumbing

Residential plumbing support where the scope is suitable.

Electrical

Residential electrical works coordinated with refurbishment scopes.

Prime London Refurbishments

Project context for access, protection and discreet delivery constraints.

Quality Standards

How ER Group London frames scope, checks, workmanship and handover.

Process

The enquiry, inspection, scope, delivery and handover route.

Contact

Discuss a real property question after reviewing the general guidance.

Our Work

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Insights hub

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General guidance only This article helps frame the decision. It cannot diagnose the condition, legal position, policy cover or technical design of a specific property.
Plumbing scope needs clear boundaries Gas work, connected electrical work, concealed services and making good each need the right responsibility and competence rather than an assumed all-in-one answer.
Guidance note. This article is general hiring guidance. It does not publish ER Group London rates, Gas Safe credentials or electrical scheme credentials, and it does not replace regulated advice.

Next Steps

Discuss a suitable residential plumbing scope

Share the room, task, photographs, access limits and any gas, electrical or making-good interfaces so the scope can be checked before work is considered.

Start an Enquiry