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Celtic Contractors
2.4 km · Dublin
Celtic Contractors is a builder in Brownsbarn, Dublin. They also do house extension. Google rates it 4.8 from 10+ reviews.
BuilderHouse Extension
HOUSE EXTENSION · NEWCASTLE · 21 PROVIDERS
House Extension in Newcastle
21 builders cover it. Nearest first.
Twenty-one builders and trades cover Newcastle. Nearest first, one score from every review.
Twenty-one builders cover Newcastle. Nearest first.
- Search and compare — no account needed
- Nearest to you first
- One score from Google, Trustpilot and Locufy reviews
IF YOU ONLY LOOK AT THREE
Which of the 21 builders near Newcastle?
Scores combine Google, Trustpilot and Locufy reviews, weighted by how many there are; distances are from the centre of Newcastle.
ALL 21, NEAREST FIRST
Builders covering Newcastle
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Convert My Attic - Attic Conversions Dublin
2.9 km · Tallaght, Co. Dublin
Convert My Attic - Attic Conversions Dublin does garage conversion in Tallaght, Dublin 24. They also do flooring installer, builder, roofer and house extension.
Garage ConversionFlooring InstallerBuilder+2 more
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Modular House | Steel Frame Garden Room & House Extension Dublin
6.8 km · Walkinstown, Dublin
Modular House | Steel Frame Garden Room & House Extension Dublin does house extension. They also do architect, cladding and builder.
House ExtensionArchitectCladding+1 more
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FarrellBuilding
7.7 km · Dublin
FarrellBuilding is a builder in Walkinstown, Dublin. They also do house extension, architect and roof repair. Google rates it 4.8 from 10+ reviews.
BuilderHouse ExtensionArchitect+1 more
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OS HOLDING Home Renovation | Attic Conversion Dublin
8.1 km · Lucan, Co. Dublin
OS HOLDING Home Renovation | Attic Conversion Dublin is a builder in Lucan, Co. Dublin. They also do tiler, plasterer, carpenter and joiner and bathroom fitter,
BuilderTilerPlasterer+9 more
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O'Flaherty Construction - Palmerstown Builders
8.4 km · Dublin
O'Flaherty Construction - Palmerstown Builders is a builder in Woodfarm Acres, Dublin. They also do garage conversion, architect and house extension. Google rat
BuilderGarage ConversionArchitect+1 more
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Arkwood Construction Ltd.
9.1 km · Terenure, Dublin
Arkwood Construction Ltd. is a builder in Co. Dublin, D6W WY90. They also do house extension, architect, flooring installer and demolition. Google rates it 4.7
BuilderHouse ExtensionArchitect+2 more
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SHD Consulting Engineers
9.8 km · Meadow Mount, Dublin
SHD Consulting Engineers is a structural engineer in Rathfarnham Dublin 14 D14 K443 i. They also do architect, builder and house extension. Google rates it 4.
Structural EngineerArchitectBuilder+1 more
Show all 21 builders ▾
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Caracon Building Extensions Ireland
10.3 km · Ballinteer, Dublin
Caracon Building Extensions Ireland does house extension in Dublin 14, Co. Dublin. They also do architect, builder and interior designer. Google rates it 5 from
House ExtensionArchitectBuilder+1 more
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Construction Company Dublin - Lallcon Build Ltd
11.7 km · Dublin
Construction Company Dublin - Lallcon Build Ltd is a builder in Ranelagh. They also do house extension and groundworks. Google rates it 5 from fewer than 10 rev
BuilderHouse ExtensionGroundworks
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Principal Construction
12 km · Dublin
Principal Construction is a builder in Smithfield, Dublin. They also do plasterer, tiler, bathroom fitter and loft conversion, and 6 other services.
BuilderPlastererTiler+8 more
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Capital Construction
12.1 km · Ranelagh, Dublin
Capital Construction does demolition in Fitzwilliam Hall, Dublin 2. They also do groundworks, architect, flooring installer and plasterer, and 1 other service.
DemolitionGroundworksArchitect+3 more
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Classic Building Extensions
12.2 km · Dublin
Classic Building Extensions is a builder in Goatstown, Dublin. They also do house extension, conservatory installer and basement conversion.
BuilderHouse ExtensionConservatory Installer+1 more
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Dublin Carpentry & Construction
12.6 km · Dublin
Dublin Carpentry & Construction is a builder in Whitehall. They also do bathroom fitter, wet room installer, house extension and conservatory installer, and 3 o
BuilderBathroom FitterWet Room Installer+5 more
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Fior Insulation & Fire Protection Ltd
13.1 km · Dublin
Fior Insulation & Fire Protection Ltd does loft insulation in Sandyford, Dublin. They also do house extension. Google rates it 4.8 from 20+ reviews.
Loft InsulationHouse Extension
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Harapu Construction
13.5 km · Clonliffe, Dublin
Harapu Construction is a builder in Portland Lock, Dublin 1. They also do house extension, landscaping and driveway paving. Google rates it 5 from fewer than 10
BuilderHouse ExtensionLandscaping+1 more
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Duff Construction
13.5 km · Dublin
Duff Construction is a builder in Ringsend, Dublin. They also do bricklayer, architect, flooring installer and demolition, and 1 other service. Google rates it
BuilderBricklayerArchitect+3 more
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Extensions & Renovations
14 km · Dublin
Extensions & Renovations is a builder in Ballygall, Dublin. They also do house extension, architect, scaffolding and flooring installer, and 1 other service. Go
BuilderHouse ExtensionArchitect+3 more
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Stone Builders - House Extensions and Renovations, ICF Contractor
14.2 km · Dublin
Stone Builders - House Extensions and Renovations, ICF Contractor is a builder in Stillorgan, Dublin. They also do house extension, architect, flooring installe
BuilderHouse ExtensionArchitect+2 more
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Lough Projects
14.8 km · Ballycoolen, Dublin
Lough Projects is a builder in Centre, Dublin 15. They also do house extension and loft insulation. Google rates it 5 from 10+ reviews.
BuilderHouse ExtensionLoft Insulation
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Nuhaus Ltd
15.5 km · Dublin
Nuhaus Ltd is a builder in Mitchelstown, Dublin. They also do bathroom fitter, kitchen fitter, fitted wardrobe installer and loft conversion, and 8 other servic
BuilderBathroom FitterKitchen Fitter+10 more
LOW
€2,500
TYPICAL
€3,200
HIGH
€4,500
Typical house extension rates across Ireland: €2,500–€4,500 per m²
The providers here quote the job; the guide shows the normal range. House Extension price guide → · How to hire →
Locufy guide prices for 2026–2027. Updated 2026.
ALSO IN NEWCASTLE
Other services in Newcastle
ArchitectStructural EngineerInterior DesignerHome StagingFlooring InstallerCarpet FitterBuilderGeneral ContractorEverything in Newcastle →
House Extension nearby
House Extension in Newcastle: questions people ask
Twenty-one today. Enter your Eircode above and the nearest come first.
€2,500–€4,500 a m², typically around €3,200 — the typical range across Ireland. The providers here quote the job.
Nearest to you first, then by score — Google, Trustpilot and Locufy reviews combined, weighted by how many there are. Sponsored placements exist and are always labelled “Sponsored”.
Request a quote on any card and describe the job; the provider comes back with a price. No account is needed to look.