House Rewiring Costs: Property Size, Scope and Quote Factors
Indicative London market ranges, the work behind each quote, and the finishing costs to check before setting your budget.
By EICR Certificates London · Updated 1 November 2026
Indicative London house rewiring costs are roughly £3,000–£6,000 for a one- or two-bedroom flat or small house and commonly around £6,000–£10,000 for a three-bedroom house; larger or period homes can cost more, and source VAT treatment varies.
These loose market ranges come from differing published sources, not EICR Certificates London prices. Our rewiring work is quoted individually. Use the figures to start a budget, then establish the circuits, accessories, access arrangements and finishing responsibilities behind each quotation. A headline amount alone does not show whether two offers cover equivalent work.
Last checked: 1 November 2026
Indicative London Rewiring Costs by Property Size
Smaller homes generally cost less to rewire, but bedroom count is only a starting point for budgeting. Floor area, circuit requirements and access can change the work substantially.
| Property | Indicative London market range | Scope questions before comparing |
|---|---|---|
| One- or two-bedroom flat or small house | Roughly £3,000–£6,000 | Which circuits and accessories are covered? Are floors accessible, and is finishing included? |
| Three-bedroom house | Commonly around £6,000–£10,000 | Do quotations allow for the same socket quantities, lighting points and dedicated circuits? |
| Four-bedroom, larger or period home | Generally more; published bands extend well into five figures | How do layout, retained features and access affect the proposed installation? |
There is no separate four-bedroom price band established here. Avoid multiplying a smaller property's figure by bedroom count: the electrical design and building layout do not scale that neatly. These figures are neither a nationwide average nor a spending ceiling. Compare a defined full-house scope before deciding whether a quotation fits your budget.
Why Similar-Sized Homes Receive Different Rewire Quotes
Two homes with the same number of bedrooms can need different amounts of cabling, circuit work and access preparation.
| Factor | Effect on scope | Question to ask |
|---|---|---|
| Floor area and layout | Change cable lengths and routes between rooms. | Which floors and spaces are covered? |
| Sockets and lighting | Additional points change materials and installation work. | Are quantities listed room by room? |
| Kitchen and shower loads | May require dedicated radial circuits. | Which appliances need separate circuits? |
| Accessory specification | Changes the fittings supplied. | Which finish and range are priced? |
| Floors, walls and period features | Affect cable access and protection of retained finishes. | What restrictions have been allowed for? |
| Occupancy | Changes room availability and coordination. | What access does the quotation assume? |
| Parking and controlled zones | Affect practical arrangements for attending. | Who arranges access and parking? |
A Victorian conversion flat may present different access constraints from a modern house of similar size. For a quotation based on these factors, see our rewiring services in London.
What a Full-House Rewire Quote Should Specify
A useful full-house rewire quotation identifies what will be replaced, what will remain and which completion tasks are included. It should describe the fixed electrical installation, covering wiring, circuits, accessories, distribution equipment, testing and documentation.
“Full rewire” alone does not establish identical inclusions across providers. Ask for exclusions and retained components to be recorded alongside the replacement work. The following checks help define an offer; they do not describe a standard package supplied by every electrician.
Wiring, Circuits, Accessories and Any Retained Parts
The quotation should list the circuits and equipment being replaced and explicitly identify any parts being retained.
- Room quantities: record socket outlets, switches, lighting points and agreed positions, including accessory finishes.
- Circuit requirements: identify lighting, socket ring final circuits or radials, and dedicated appliance supplies.
- Consumer unit: state whether replacement is included and which distribution equipment remains.
- Protective devices: describe the proposed protection, including RCBOs where specified, rather than simply promising a modern board.
- Earthing and bonding: identify necessary work to circuit protective conductors, earthing and main protective bonding.
- Retained parts: list existing wiring or equipment and the assessment needed to establish suitability.
A consumer-unit change alone is not a complete rewire. The design must account for the installation as a whole under BS 7671:2018+A4:2026.
Testing, Certification and Building Regulations Notification
A rewire quote should explain the inspection, testing, Electrical Installation Certificate and applicable Building Regulations notification arrangements.
| Deliverable | What to confirm |
|---|---|
| Inspection and testing | Verification of the completed electrical work is included. |
| Electrical Installation Certificate | The EIC includes the accompanying inspection and test schedules. |
| Building Regulations documentation | The notification route and relevant completion or compliance document are identified. |
An EIC records new installation work; an EICR assesses existing condition. Read about the electrical certificates issued for different types of work.
Building Regulations paperwork is separate from the EIC. Who handles notification, and is its cost included? See Part P notification for electrical work in England for the arrangements described in GOV.UK Approved Document P.
How Partial Rewiring Changes the Budget
Selected circuits or rooms may start from around £1,500–£2,000 upwards in published market pricing, but this is not a whole-house price or an assured saving. Sources vary in their VAT treatment; this starting range is market guidance, not our quotation.
A smaller scope still needs assessment, access, testing and certification. Inspection findings, including insulation resistance and protective-conductor checks, help establish which wiring can remain. Learn more about whether your home needs a full rewire or more limited work.
| Scope | Budget question |
|---|---|
| Full | Does the replacement specification cover the whole installation, with retained parts identified? |
| Partial | Which circuits are included, and how will they connect safely to retained wiring? |
Ask whether later work would repeat floor access or surface repairs. Shared assessment and completion tasks mean a partial project cannot be priced as a simple fraction of a full replacement.
Costs to Check Beyond the Electrical Work
The electrical quotation may leave finishing work and practical project costs for you to arrange separately. Confirm making good, decoration, access arrangements, occupancy assumptions and VAT before setting the overall budget.
Some contractors include particular finishing tasks; others exclude them. Your electrical contract and the amount needed to restore the finished home may therefore differ. Record responsibility for each item rather than assuming everything falls within the installation price.
Agree Who Handles Making Good and Decoration
Plaster repairs and decoration should be separately described because completing the electrical work does not define the finished condition of every surface. Making good is often handled by a separate trade.
Ask who arranges the tradesperson and whether materials are included. “Making good included” needs enough detail to distinguish local filling from broader plastering or decoration. Clarify how disturbed floor coverings will be reinstated and who prices any further repairs.
Allow for Access, Occupancy and Coordination
Restricted access and working around occupants can change the labour and coordination a rewire needs. First fix, second fix and finishing work require planning; see what happens during a house rewire for the stages and disruption involved.
- Who moves furniture and prepares access beneath floors or behind fitted finishes?
- Which rooms must be available, and what does the proposed power-interruption plan involve?
- Who arranges parking, permits or access through controlled areas?
- How will electrical work be coordinated with plastering and other building trades?
Request arrangements specific to your property rather than assuming occupied working is practical. If temporary accommodation is needed, treat that as separate household expenditure. Agree access assumptions before accepting the quotation.
Check VAT and Exclusions Before Comparing Totals
Two headline prices are comparable only when their VAT treatment and included work are clear. The published sources behind these market bands use differing VAT bases, so the ranges cannot establish an exact payable total.
- What amount is quoted for the agreed electrical specification?
- How is VAT treated in that quotation?
- Which tasks, materials or other costs are excluded?
- What total would be payable for the stated scope?
Get those answers in writing. Our own rewiring work is individually quoted, with prices presented as “plus VAT”. Do not automatically add VAT to a market figure that may already include it.
How to Compare Rewire Quotes on the Same Scope
Compare rewiring quotes against the same written specification before judging the difference in price.
- Share consistent information. Give each provider the property details, intended room layout and desired electrical points. Include an existing EICR or observation schedule if available; neither is a prerequisite for every enquiry.
- Request itemised scope. Identify replacement and retained components, testing, certificates, notification, finishing responsibilities and VAT.
- Resolve assumptions. Clarify exclusions, access requirements and how additional work would be described, priced and agreed.
Use a separate copy of this blank matrix for each offer. Mark the relevant column and record unresolved details before choosing.
| Scope | Included | Excluded | Clarify |
|---|---|---|---|
| Circuits and retained wiring | |||
| Accessories and quantities | |||
| Consumer unit and protection | |||
| Earthing and bonding | |||
| Testing, EIC and schedules | |||
| Notification arrangements | |||
| Making good and decoration | |||
| Access, VAT and payable total |
Request a Quote for Rewiring in London
EICR Certificates London quotes rewiring work for the property and agreed scope, with free, no-obligation quotes. The market figures above support initial budgeting; your quotation identifies the proposed work and its pricing basis.
Qualified, insured electricians. Open 8am to 10pm, seven days a week. Have your postcode, property size, occupancy, intended changes and any existing EICR ready when you request a rewiring quote. Include any access restrictions or finishing requirements that could affect the specification.
House Rewiring Cost Questions
A useful rewire budget also depends on the property’s condition, installation options and agreed programme. These answers help connect those considerations to the scope you ask an electrician to quote.
How Much Does It Cost to Rewire an Old House?
An old house needs a property-specific quotation because access, retained features and wiring condition can change the scope substantially. Use the size bands above as an initial reference, with their VAT caveat. A Victorian conversion may involve sensitive finishes or restricted routes, but building age does not establish wiring age, electrical condition or a universal surcharge.
Can You Rewire a House Without Removing Walls?
Rewiring does not necessarily require removing whole walls, but new cable routes may require local openings, chasing or suitable surface containment. The electrician assesses routes, including safe zones for concealed cables, and agrees the intended finish. Existing routes cannot automatically be reused. Ask how the proposed approach affects access, plaster repairs and decoration before comparing the overall project cost.
How Long Does a House Rewire Last?
Wiring has no universal replacement age, so a rewire should not be budgeted as a fixed number of maintenance-free years. Condition, damage, use and subsequent alterations affect its continuing suitability. Periodic inspection and testing assess that condition. An EICR inspection interval is distinct from installation lifespan and does not establish a scheduled replacement date.
Would a 20-Year-Old House Need Rewiring?
A house being 20 years old does not by itself establish that it needs rewiring. Inspection findings, wiring condition, damage and suitability for current use determine the required work. An EICR may identify concerns requiring investigation, supported by testing such as insulation resistance checks. A newer edition of the Wiring Regulations alone does not condemn an existing installation.
How Long Does Rewiring Take?
The programme depends on scope, access, occupancy and coordination with finishing work, so duration should be agreed for the property. Ask whether the proposed period covers electrical working time alone or extends through plastering, decoration and completion. First-fix and second-fix arrangements need coordination with other trades. That distinction matters when planning room availability, household routines and any temporary accommodation.
What Should I Check Before Choosing an Electrician for a Rewire?
Check the proposed installer’s competence, relevant registration and certification arrangements alongside the written scope and price.
Identity: match registration details to the person or business undertaking the work. Read how to check an electrician’s registration.
Competence: confirm relevant experience and qualifications for the proposed installation and testing.
Paperwork: establish who provides the Electrical Installation Certificate, which Building Regulations notification route applies and who handles it. Keep these arrangements with the written quotation.