Building services in Penzance
House extensions
- Single-storey extensions
- Double-storey extensions
- Side extensions
- Side return extensions
- Wraparound extensions
- Kitchen extensions
- Orangeries
- Glazed and contemporary extensions
- Porches
Loft conversions
- Dormer loft conversions
- Hip-to-gable loft conversions
- Mansard loft conversions
- Rooflight loft conversions
- Bungalow loft conversions
Garage, basement and barn conversions
New build homes
Renovations and structural work
Design and approvals
Guide prices in Penzance
| Project | Guide range (inc VAT) |
|---|---|
| Single-storey extensions | £2,000–£2,950 per m² of floor area |
| Hip-to-gable loft conversions | £56,000–£79,500 for a hip-to-gable with rear dormer |
| Garage conversions | £18,500–£30,500 for a single integral garage |
| House renovations | £900–£1,850 per m² for a medium to full renovation |
| Porches | £6,750–£16,500 from a 3 m² porch to a small front extension |
| Orangeries | £2,450–£3,450 per m² of floor area |
Prices in the South West sit near the national average for this kind of work, and the range for Penzance reflects that.
Planning permission in Penzance
In England a single-storey rear extension is often permitted development: broadly up to 3 metres deep on a semi-detached or terraced house and 4 metres on a detached house, no higher than 4 metres, with eaves no higher than 3 metres within 2 metres of a boundary, and covering no more than half the garden. The larger home extension scheme allows up to 6 or 8 metres if you notify the council first and neighbours have a chance to comment. In conservation areas, National Parks and National Landscapes the larger home extension route, side extensions and cladding are not permitted development. Flats and houses whose rights have been removed need a planning application, and listed buildings need listed building consent.
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.
About building in Penzance
The South West mixes stone and render cottages with post-war and newer estates, and local materials matter more here when matching an extension.
We work across Penzance and neighbouring areas such as Camborne, Redruth and Falmouth. Postcodes we cover in Penzance include TR18. Penzance has a population of around 20,000.
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
Approvals in place
We handle planning, building control and neighbour notices before work starts.
- 04
Build and handover
Work follows the agreed programme, with inspections along the way and a completion certificate at the end.
Questions from homeowners in Penzance
Do you work in Penzance?
Yes. We take on extensions, loft conversions, conversions, renovations and new builds across Penzance, including postcodes TR18.
Is the home visit free?
Yes. The first visit to discuss your project and measure up for a quote is free, with no obligation.
How much does a loft conversion cost in Penzance?
A rear dormer loft conversion in Penzance typically costs £49,000–£69,500 for a typical rear dormer with en-suite, including VAT.
Do I need planning permission for an extension in Penzance?
In England a single-storey rear extension is often permitted development: broadly up to 3 metres deep on a semi-detached or terraced house and 4 metres on a detached house, no higher than 4 metres, with eaves no higher than 3 metres within 2 metres of a boundary, and covering no more than half the garden. The larger home extension scheme allows up to 6 or 8 metres if you notify the council first and neighbours have a chance to comment. In conservation areas, National Parks and National Landscapes the larger home extension route, side extensions and cladding are not permitted development. Flats and houses whose rights have been removed need a planning application, and listed buildings need listed building consent.
How much does an extension cost in Penzance?
A single-storey extension in Penzance typically costs £2,000–£2,950 per m² of floor area, and a double-storey extension £1,700–£2,550 per m² of floor area (both floors), including VAT.