Two-storey extensions in Castle Douglas
From over-garage bedrooms to full wraparounds, we cover every kind of two-storey extension in Castle Douglas.
Castle Douglas at a glance
- Postcode districts
- DG7
- Area
- Dumfries and Galloway, Scotland
- Price region
- Scotland
- Nearest towns
- Dalbeattie (4.2 miles), Kirkcudbright (8.6 miles), Dumfries (15.4 miles), Locharbriggs (17.6 miles)
- Distance to Dumfries
- about 15.4 miles
- Approvals
- Class 1B: two-storey extensions must be at least 10 m from every boundary to avoid planning permission, so most need an application.
Around Castle Douglas we also work in Dalbeattie, Kirkcudbright and Dumfries, and across the rest of Dumfries and Galloway. Postcode district in and near Castle Douglas: DG7.
Extensions available in Castle Douglas

Two-storey rear extensions
Guide from £52,500 in Castle Douglas, including VAT.
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Two-storey side extensions
Castle Douglas guide price from £81,000, Standard spec.
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Two-storey wraparound extensions
From £113,000 in Castle Douglas. Free visit to firm it up.
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Part single, part two-storey extensions
Design, approvals and build for Castle Douglas homes. Guide from £67,500.
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Extensions over a garage
From £29,500 in Castle Douglas. Free visit to firm it up.
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First-floor extensions
Castle Douglas guide price from £23,500, Standard spec.
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Two-storey extensions for semi-detached houses
Design, approvals and build for Castle Douglas homes. Guide from £52,500.
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Two-storey extensions for detached houses
Design, approvals and build for Castle Douglas homes. Guide from £81,000.
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Kitchen extensions with bedrooms above
Castle Douglas guide price from £52,500 (before kitchen units), Standard spec.
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Extra bedroom and en-suite extensions
Guide from £52,500 (plus en-suite) in Castle Douglas, including VAT.
Learn moreWhich type suits your house?
Rear and side extensions suit most semi-detached and detached houses with room around them. Terraced and town-centre homes can take a two-storey extension too, with more care over neighbours, light and access.
Also available in Dumfries and Galloway
- 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
- Design and build two-storey extensions
Rules for Castle Douglas
Castle Douglas is in Scotland. Class 1B: two-storey extensions must be at least 10 m from every boundary to avoid planning permission, so most need an application. Householder planning application: £371. Councils have two months to decide a local planning application.
The full Scotland rules explained
Questions about extensions in Castle Douglas
Do you cover Castle Douglas?
Yes. We cover Castle Douglas (DG7) and the surrounding area, including Dalbeattie and Kirkcudbright. The first site visit is free.
What does a two-storey extension cost in Castle Douglas?
Using our Scotland 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 £52,500–£71,000 including VAT. An extension over a garage is about £29,500–£43,000.
Which other places near Castle Douglas do you cover?
Everywhere around it, including Dalbeattie (4.2 miles), Kirkcudbright (8.6 miles) and Dumfries (15.4 miles), and the rest of Dumfries and Galloway.