Building services in Grimsby
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 Grimsby
| Project | Guide range (inc VAT) |
|---|---|
| Double-storey extensions | £1,550–£2,400 per m² of floor area (both floors) |
| Kitchen extensions | £2,150–£3,250 per m² including a mid-range kitchen |
| Dormer loft conversions | £45,500–£64,500 for a typical rear dormer with en-suite |
| Hip-to-gable loft conversions | £52,000–£74,000 for a hip-to-gable with rear dormer |
| Garage conversions | £17,000–£28,500 for a single integral garage |
| Orangeries | £2,300–£3,250 per m² of floor area |
The guide for Grimsby reflects typical costs in the East Midlands, roughly 5% below the UK-wide figure.
Planning permission in Grimsby
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 Grimsby
In the East Midlands, many estates built since the 1960s have integral garages that convert well into a study or bedroom.
Grimsby sits in Lincolnshire, about 16 miles south-east of Hull. We cover the whole of Grimsby, including postcodes DN32, DN34 and DN41. Grimsby has a population of around 86,000.
How it works
- 01
Visit and measured survey
A free visit to understand the project, check access and take measurements.
- 02
Design and pricing
Design options, then a fixed quote based on the chosen drawings and specification.
- 03
Approvals
Planning or permitted development confirmation, building regulations and any party wall matters.
- 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 Grimsby
Do you work in Grimsby?
Yes. We take on extensions, loft conversions, conversions, renovations and new builds across Grimsby, including postcodes DN32, DN34 and DN41.
How much does an extension cost in Grimsby?
A single-storey extension in Grimsby typically costs £1,850–£2,750 per m² of floor area, and a double-storey extension £1,550–£2,400 per m² of floor area (both floors), including VAT.
Do I need planning permission for an extension in Grimsby?
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 a loft conversion cost in Grimsby?
A rear dormer loft conversion in Grimsby typically costs £45,500–£64,500 for a typical rear dormer with en-suite, including VAT.
Is the home visit free?
Yes. The first visit to discuss your project and measure up for a quote is free, with no obligation.