Building services in Boston
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 Boston
| Project | Guide range (inc VAT) |
|---|---|
| Single-storey extensions | £1,850–£2,750 per m² of floor area |
| 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 |
| Hip-to-gable loft conversions | £52,000–£74,000 for a hip-to-gable with rear dormer |
| House renovations | £850–£1,700 per m² for a medium to full renovation |
| Structural alterations and knock-throughs | £4,250–£9,000 for a typical knock-through with steel beam |
The guide for Boston reflects typical costs in the East Midlands, roughly 5% below the UK-wide figure.
Planning permission in Boston
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 Boston
The East Midlands has a mix of red-brick terraces, inter-war semis and newer estates, so rear extensions and garage conversions are common projects.
Our Boston coverage includes postcode districts PE21, and we also work in nearby places such as Spalding, Skegness and Wisbech. Boston has a population of around 45,000.
How it works
- 01
Survey and brief
We visit, discuss your ideas and budget, and survey the property or site at no cost.
- 02
Design and fixed quote
Drawings, structural calculations and an itemised, fixed price for the agreed specification.
- 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 from homeowners in Boston
Do you work in Boston?
Yes. We take on extensions, loft conversions, conversions, renovations and new builds across Boston, including postcodes PE21.
How much does a loft conversion cost in Boston?
A rear dormer loft conversion in Boston typically costs £45,500–£64,500 for a typical rear dormer with en-suite, including VAT.
How much does an extension cost in Boston?
A single-storey extension in Boston 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.
Is the home visit free?
Yes. The first visit to discuss your project and measure up for a quote is free, with no obligation.
Do I need planning permission for an extension in Boston?
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.