The short answer
A flat is usually lower-cost to rewire than a house of similar floor area, mainly because it has fewer circuits, one floor and no loft or staircase wiring to run. A typical one or two-bedroom flat falls roughly in the £2,000–£5,500 range, while a three-bedroom house commonly sits around £4,450–£8,000. That said, a flat is not automatically simpler: leasehold consent, communal supply arrangements, solid concrete floors and restricted access for cabling can all add cost or complexity. The number ultimately depends on the size, age and layout of the specific property rather than the label "flat" or "house".
Property type is a useful rule of thumb but not the whole story. The comparison below sets out where a flat tends to cost less, and the situations where it does not.
Typical rewire ranges
- 1-bed flat~£2,000–£4,800
- 2-bed flat~£3,000–£5,500
- 3-bed house~£4,450–£8,000
- Main driverCircuit count, not label
- Flat extrasLeasehold consent
Typical cost ranges side by side
The headline difference comes down to the number of circuits and the amount of cable to run. A single-storey flat has no staircase, loft or upper-floor wiring, which removes a chunk of the labour that a house of similar floor area would carry. Because a rewire is priced mostly by time on site, anything that shortens the cable runs and reduces the number of circuits tends to bring the figure down.
The ranges below are indicative UK figures, not quotations, and they overlap deliberately: a large, older two-bed flat with awkward access can easily cost more than a small, modern two-bed house with a simple layout. Treat the property label as a starting point and the circuit count, age and access as the real drivers. A studio or one-bed flat sits at the lower end of the rewiring spectrum precisely because it has the fewest rooms, the fewest circuits and the shortest runs; a three or four-bed house sits at the upper end for the opposite reasons.
| Property | Typical full rewire | Why |
|---|---|---|
| 1-bed flat | ~£2,000–£4,800 | fewest circuits, one floor |
| 2-bed flat | ~£3,000–£5,500 | more rooms, still single level |
| 2-bed house | ~£3,500–£6,500 | two floors to wire |
| 3-bed house | ~£4,450–£8,000 | most common job |
Indicative UK figures for guidance only, not quotations. Sources: Checkatrade and MyJobQuote cost guides.
Why a flat is often lower-cost
For a comparable amount of living space, a flat usually works out more affordable to rewire for a few practical reasons:
- One floor: no need to run cables between storeys or up a staircase, and no loft wiring.
- Fewer circuits: typically fewer lighting and socket circuits than a house, and often no outdoor, garage or garden supply.
- Simpler layout: compact rooms close together mean shorter cable runs.
- Smaller consumer unit: fewer circuits can mean a smaller, less expensive board.
These savings are why a one-bed flat sits at the lower end of the overall rewiring spectrum. The labour element of a rewire scales closely with the number of points and circuits to be wired and tested, so a property with two bedrooms on a single level simply has less to do than the same floor area split over two storeys with a loft.
There is also less making good in many flats. A house rewire often disturbs ceilings on two floors and the staircase enclosure, whereas a single-level flat concentrates the disruption in one plane. Where the flat has a dropped or accessible ceiling void, some cabling can be run without chasing walls at all, which trims both the electrical labour and the replastering that usually follows. None of this holds for every flat, but for a typical purpose-built or converted flat it is why the same number of rooms tends to come in below the equivalent house.
Where a flat can cost more or get complicated
A flat is not always the simpler job. Several factors can erode the saving or add hurdles a house would not have:
- Leasehold consent: most flats are leasehold, and the lease may require the freeholder or managing agent's permission for major electrical work. This can add time and, occasionally, conditions.
- Communal supplies and risers: the incoming supply, meters and any shared circuits may sit in communal areas, so coordinating an isolation or any work there involves the building management.
- Construction: solid concrete floors and party walls make chasing and running cable harder than in a timber-floored house, sometimes pushing cabling into surface trunking or ceilings.
- Access and protection: upper-floor flats, lifts and shared hallways make moving materials and protecting communal areas slower.
Conversions can be particularly involved. A large period house split into flats may have its original wiring shared between dwellings in ways that are hard to separate, and the boundary between a flat's own circuits and the building's communal supply is not always obvious. Establishing exactly what serves the individual flat, and isolating it safely without affecting neighbours, can take time before any new cable is run. Where the supply, meter or earthing arrangement is communal, the freeholder or managing agent may need to be involved even for work that is otherwise inside the flat.
The practical takeaway is that "flat" does not automatically mean "cheaper and simpler". For a straightforward modern flat it usually does, but for a leasehold conversion with communal supplies and concrete floors, the consent process and construction can offset much of the saving that fewer circuits would otherwise deliver. The only reliable way to know is to have the specific property assessed rather than relying on the property type alone.
What the price includes either way
Whether you are rewiring a flat or a house, the figure quoted should cover the same broad elements, and it is worth knowing what they are so you can read a quote properly. A full rewire price typically includes:
- All new cabling for the lighting and power circuits.
- Sockets, switches and light fittings throughout.
- A new consumer unit (fuse board) with modern RCD or RCBO protection — a fixed cost regardless of property size.
- Testing and certification, ending in an Electrical Installation Certificate (EIC) for the new work.
- Making good — though plastering and decorating are sometimes priced separately, so always check.
For a flat, the saving over a house comes mainly from fewer circuits and a single floor, but the fixed costs — the consumer unit, testing and certification — are broadly the same. That is why the per-square-metre cost of a small flat can look higher than a larger house even though the total is lower: the fixed elements are spread over fewer rooms.
The reliable way to compare a flat and a house, or two quotes for the same property, is to match them on scope: the number of points and circuits, whether a new consumer unit is included, and whether making good and VAT are in the figure. A lower total that leaves out plastering, the board or VAT is not genuinely lower once those are added back in.
Frequently asked questions
Is a flat always lower-cost to rewire than a house?
Usually, but not always. A flat's single floor and fewer circuits tend to make it more affordable than a similar-sized house. However, leasehold consent, communal supplies and solid concrete construction can add cost and complexity that offset the saving.
Do I need permission to rewire a leasehold flat?
Often, yes. Many leases require the freeholder or managing agent's consent for major electrical work. Check your lease before booking, as proceeding without required permission can create issues with the building management and at resale.
Does the number of bedrooms drive the price more than flat-or-house?
Largely, yes. The biggest cost driver is the number of circuits and points, which tracks with the number of rooms and the floor area. A studio flat and a four-bed house sit at opposite ends regardless of the label, and a large flat can cost more than a small house with fewer circuits. Use the property type as a rough guide and the circuit count, age and access as the real determinants of price.
Sources & further reading
Figures on this page are typical UK ranges drawn from published sources and depend on your specific property. They are guidance, not a quotation. Legal duties are summarised for guidance — confirm the current position on GOV.UK.