What is a house renovation?
A house renovation brings an older or tired home up to date. It can include rewiring, a new heating system, replastering, new floors, windows, kitchens and bathrooms, and changes to the layout. A full renovation is often combined with an extension or loft conversion.
How much does a house renovation cost in St Helens?
In St Helens, a house renovation typically costs £850–£1,700 per m² for a medium to full renovation, including VAT at 20% (5% may apply to homes empty for two years or more). For a typical 90 m² project that is roughly £76,500–£153,000. Building costs in the North West run about 6% below the UK average, and the figures for St Helens are adjusted to reflect that. Design, structural calculations and council fees are extra.
| Size or type | Guide range |
|---|---|
| Smaller project (63 m²) | £53,500–£107,000 |
| Typical project (90 m²) | £76,500–£153,000 |
| Larger project (126 m²) | £107,000–£214,000 |
| Rate per m² | £850–£1,700 |
The main things that change the cost:
- Whether you live in during the work
- Structural and damp repairs
- Finishes
- Kitchens and bathrooms
A guide range is only a starting point: the guide price tool gives an instant figure for your size, and a free survey turns it into a fixed quote.
Do you need planning permission for a house renovation in St Helens?
The approval route for St Helens is set by planning law in England. In England internal renovation usually does not need planning permission unless the house is listed, when listed building consent covers internal work too. Notifiable work such as rewiring, structural changes, new windows and heating must meet building regulations.
Building regulations approval comes from the council’s building control service or a registered building control approver. The work is inspected at key stages, such as foundations, drainage and insulation, and a completion certificate is issued at the end.
At the survey we check your house’s planning history and any restrictions, and tell you which route applies.
What we handle
The work we manage on a house renovation:
- Building control for notifiable work
- Joinery, doors and floors
- Structural repairs and damp treatment
- Decoration
- Condition survey and scope of works
- Plastering and boarding
How long does it take?
Expect 8 to 20 weeks on site depending on scope. Allow time beforehand for drawings and approvals, usually 6 to 12 weeks.
Building in St Helens
The North West has many brick terraces and inter-war semis, where kitchen extensions and dormer loft conversions add space without moving.
From WA10 outwards, we take on projects throughout St Helens and the surrounding parts of Merseyside.
How it works
- 01
Visit and measured survey
A free visit to understand the project, check access and take measurements.
- 02
Drawings and written quote
We prepare the design and give you a written, itemised quote with inclusions and exclusions.
- 03
Permissions sorted
Applications, building control and neighbour arrangements, all before the start date.
- 04
Build and handover
Work follows the agreed programme, with inspections along the way and a completion certificate at the end.
Questions about house renovations in St Helens
Do you renovate listed buildings?
Yes, with listed building consent and appropriate materials.
How much does a house renovation cost in St Helens?
In St Helens, a house renovation typically costs £850–£1,700 per m² for a medium to full renovation, including VAT at 20% (5% may apply to homes empty for two years or more). A typical 90 m² project comes to roughly £76,500–£153,000. Your fixed price depends on the survey and drawings.
Who approves a house renovation in St Helens?
Planning matters in St Helens go to the council covering your address, and the work needs building control approval. We prepare and submit the applications for you.
Can I live in the house during a renovation?
For light work, yes. For a full renovation, most clients move out for some or all of the job.
Does a renovation need building regulations approval?
Some parts do, such as rewiring, structural changes, new windows and heating systems. We handle notifications.