Two-storey extensions in Millom
We design, get approval for and build two-storey extensions in Millom and the surrounding area. Choose the type of extension below or book a free site visit.
Millom at a glance
- Postcode districts
- LA18, LA19 and LA20
- Area
- Cumbria, England
- Price region
- North West England
- Nearest towns
- Askam-in-Furness (3.2 miles), Dalton-in-Furness (5.2 miles), Barrow-in-Furness (7.1 miles), Ulverston (7.2 miles)
- Distance to Carlisle
- about 49.1 miles
- Approvals
- Two-storey rear: up to 3 m deep and 7 m from the rear boundary under permitted development. Side, wraparound and front: planning permission.
We cover postcode districts LA18, LA19 and LA20 in and around Millom, along with neighbouring Askam-in-Furness, Dalton-in-Furness and Barrow-in-Furness.
Extensions available in Millom
Two-storey rear extensions
Guide from £53,000 in Millom, including VAT.
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Two-storey side extensions
Millom guide price from £82,000, Standard spec.
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Two-storey wraparound extensions
Millom guide price from £114,500, Standard spec.
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Part single, part two-storey extensions
From £68,500 in Millom. Free visit to firm it up.
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Extensions over a garage
Design, approvals and build for Millom homes. Guide from £30,000.
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First-floor extensions
Guide from £24,000 in Millom, including VAT.
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Two-storey extensions for semi-detached houses
For homes in Millom: typical guide from £53,000.
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Two-storey extensions for detached houses
From £82,000 in Millom. Free visit to firm it up.
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Kitchen extensions with bedrooms above
Design, approvals and build for Millom homes. Guide from £53,000 (before kitchen units).
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Extra bedroom and en-suite extensions
Guide from £53,000 (plus en-suite) in Millom, including VAT.
Learn moreWhich type suits your house?
Which type suits your house in Millom depends mostly on where you have room. A deep garden points to a rear extension; space beside the house points to a side or over-garage extension; a house that already has a single-storey extension can often take a first floor on top.
Also available in Cumbria
- Two-storey front extensions
- Two-storey extensions for end-of-terrace houses
- Two-storey annexe extensions
- Garage conversions with a room above
- Two-storey extension plans and drawings
- Planning permission for two-storey extensions
- Structural engineering for two-storey extensions
- Building regulations for two-storey extensions
- Party wall notices for extensions
- Design and build two-storey extensions
Rules for Millom
Millom is in England. Two-storey rear: up to 3 m deep and 7 m from the rear boundary under permitted development. Side, wraparound and front: planning permission. Householder planning application: £548 (or £575 for applications made from 8 December 2026). Lawful development certificate: £274 (about £288 for applications from 8 December 2026). Councils should decide householder applications within 8 weeks of validation.
The full England rules explained
Questions about extensions in Millom
Do you cover Millom?
Yes. We cover Millom (LA18, LA19 and LA20) and the surrounding area, including Askam-in-Furness and Dalton-in-Furness. The first site visit is free.
What does a two-storey extension cost in Millom?
Using our North West England guide, a two-storey rear extension with a 4 m × 3.5 m footprint on two floors (28 m² of new floor space) is about £53,000–£72,000 including VAT. An extension over a garage is about £30,000–£43,500.
Which other places near Millom do you cover?
Everywhere around it, including Askam-in-Furness (3.2 miles), Dalton-in-Furness (5.2 miles) and Barrow-in-Furness (7.1 miles), and the rest of Cumbria.