Home Renovation in Co. Cork

29 businesses offering home renovations across Co. Cork.

A renovation differs from an extension in that nothing about it is new ground. You are working inside a house that already has a structure, services and a history, and the first useful question is not what the finished rooms look like but what order the work happens in. Structural alterations come first, then the strip out, then first fix, where wiring, pipework and wastes are run while the walls and floors are open. Only then do plastering, second fix and decoration follow. Almost everything that goes badly on a renovation is a sequencing failure: a finish going on before the thing behind it was done, and then coming back off.

Old houses keep their surprises behind the plaster: rewiring that stops halfway, lead or steel pipework, rotten joist ends, a missing lintel over an opening someone formed without one. No honest quote can price what nobody has seen yet, so the question is not whether there will be unknowns but how they are handled, and whether they are agreed in writing before the extra work proceeds. Settle early whether you are living in the house while it runs, because that changes the programme.

The Building Regulations apply to material alterations even where planning permission does not. Two parts of the work are never the builder's to certify: gas work requires an installer on the Register of Gas Installers of Ireland issuing a Declaration of Conformance, and new circuits or a new fuse board are restricted electrical work requiring a Safe Electric registered contractor and a Completion Certificate. Keep both. Cost follows the extent of structural work, how much of the services are replaced, the standard of finish, and the condition of what is found once the house is opened up.

Home Renovations in Co. Cork

Aidan McCarthy Construction

Midleton, Co. Cork

Based in East Cork, Aidan McCarthy Construction is a family-run business established in 2000, with over 15 years of experience. The company handles construction projects of all sizes across the Cork area, from new builds to extensions and renovations. Their team of management and skilled tradesmen works on both public and private sector projects, aiming to complete work on time and to a high standard. Services include new home construction, house extensions, renovations, commercial groundworks, and septic tank repair.

New Home ConstructionHouse ExtensionsRenovationsCommercial Groundworks

Attic Conversions by Kevin Dunne

Douglas, Co. Cork

Attic Conversions by Kevin Dunne is based in Douglas, Co Cork. We have been in business for over 30 years and continue to grow and expand. We provide you with extra living space, converting your unused attic into extra bedrooms, office space, whatever you need. We also provide a professional carpentry service.

attic-conversionshome-renovations

Barry Wright Construction

Kinsale, Co. Cork

Barry Wright Construction is a family run construction company based in Kinsale, County Cork, with over 30 years of house building experience. The company is fully Irish owned and is operated by father and son, Tim and Barry Wright. They undertake a range of building projects including one off houses, extensions, renovations and commercial buildings in the Kinsale and Cork area. Services offered span from initial site commencement through to final certification of completion, with staff providing advice on all areas of the build. The company also offers carpentry services and works on passive house projects.

One-Off HousesExtensionsRenovationsCommercial Buildings

Bashi Renovation & Construction

Cork City, Co. Cork

Specialising in construction and renovation services with over 20 years of industry experience, serving Cork and areas within a 20-mile radius.

home-renovationshouse-extensions

Breen Construction & Joinery

Mallow, Co. Cork

Family-run building contractor Breen Construction & Joinery is based in North Cork and serves commercial and domestic customers across Cork and Kerry. With over 30 years of experience, the company offers a full plans-to-completion service for new home builds, extensions, loft conversions, and more. Their range of services includes house renovations, commercial works, joinery, roofing, concrete work, and plumbing and electrical installations. They also handle basement and garage conversions, as well as general repair jobs. The team aims to provide reliable, ongoing communication throughout each project.

New Home BuildsHouse ExtensionsLoft ConversionsHouse Renovations

Buckley Group

Mallow, Co. Cork

Buckley Group is a family-owned construction services group based in Millstreet, Co. Cork, operating across several sectors. The group includes companies handling main contracting, design and build, civil engineering, house building, extensions, grant work, insulation, fire stopping, restoration, property development and facilities management. They have a strong financial base and key personnel with wide experience, allowing them to execute multiple projects simultaneously. The group emphasises delivering projects on time, on budget, and to high quality and sustainability standards.

Main ContractingDesign and BuildCivil EngineeringHouse Building

Chris O'Donovan Construction

Bandon, Co. Cork

Based in Ballineen, West Cork, Chris O'Donovan Construction has over 25 years of experience in the building industry. The company specialises in new home builds, extensions, renovations and plastering, and takes on project management for clients, liaising with architects and consulting engineers. They handle projects from site groundwork through to finished homes, aiming for energy-efficient builds that achieve a BER A rating. The firm is fully insured and holds CIRI, SIGA and C2 registrations, and works to keep projects on budget and on schedule.

New Home ConstructionHome ExtensionsRenovationsPlastering

CS Construction

Cork City, Co. Cork

CS Construction, led by Rory Murphy, is a building firm in Cork that has been constructing new houses and carrying out home extensions since 1997. The company covers all trades and approaches each job as if building for themselves, aiming for a high standard of workmanship. They offer a free survey and quotation with no obligation, and can work from your architect's drawings. Services include house extensions, renovations, and restoration, with a focus on delivering a stress-free experience.

House ExtensionsNew House BuildingHome RenovationsRestoration

David Lilley Construction

Mallow, Co. Cork

David Lilley Construction is an Irish-owned building firm based in Mallow, County Cork, with over 40 years of experience. The company handles new builds, extensions, modifications, renovations, and custom projects, and also works with architects or directly with clients. They emphasise clear communication, long-term planning, and adapting homes to changing needs, covering aspects such as heat retention, ventilation, space flow, safety, materials, and budget. The business is fully insured and tax compliant, with strict health and safety procedures and site risk assessments on every job.

New BuildsHouse ExtensionsHome RenovationsModifications

Donal O’Brien Building

Youghal, Co. Cork

Donal O'Brien Building is a residential construction company in Youghal, County Cork, founded and managed by Donal O'Brien, a qualified bricklayer with two decades of experience. The company specialises in custom homes, renovations, and residential developments, offering a personalised approach to each project. Their team of skilled professionals focuses on delivering high-quality craftsmanship and client satisfaction, ensuring every detail is executed to the highest standard.

Custom HomesRenovationsResidential Developments

DPC Construction

Cork City, Co. Cork

DPC Construction is a building company serving Cork City, Cork County, Kerry, Limerick and Waterford. The team handles new home construction, renovations and extensions, commercial projects, and roof repairs. They also offer attic conversions, conservatories, garage conversions, insulation and house extensions. The company emphasises competitive pricing and works closely with clients to ensure satisfaction.

New Home ConstructionRenovations and ExtensionsCommercial ConstructionRoof Repair

Ecotech Homes

Ballincollig, Co. Cork

Ecotech Homes is an East Cork based timber frame and offsite construction specialist offering full house build, self-build, and design & build services. The company focuses on energy-efficient construction, using highly insulated and airtight building envelopes to achieve passive or low-energy homes. They also provide home retrofits, renovations, and extensions, with an emphasis on improving energy performance and comfort. Their services are available to homeowners, builders, developers, architects, and engineers.

Full House BuildSelf BuildDesign & BuildTimber Frame Homes

FG Construction

Cork City, Co. Cork

FG Construction, led by John, carries out building work across Cork, with customer reviews highlighting kitchen renovations, house extensions, driveways, patios and roof repairs. The team is described as professional, reliable and skilled, and projects are reportedly completed on time and within budget. Customers also mention that John is knowledgeable and straightforward, and that he listens to ideas and concerns. The company comes recommended for quality renovation and extension work.

Kitchen RenovationsHouse ExtensionsDrivewaysPatios

Grouville Builders

Cork City, Co. Cork

Established in 2000, Grouville Builders deliver energy efficient, environmentally friendly homes with an enviable specification and attention to detail. They are SEAI registered and offer a One Stop Shop service for SEAI Grants for complete home energy upgrades.

home-renovationshouse-extensions

Kenmona Construction

Fermoy, Co. Cork

Kenmona Construction, based in Ballyhooly, Co. Cork, handles building and carpentry work across residential and commercial sectors. The company offers renovations, attic conversions, and maintenance services, and can advise clients from the planning stage through to turn-key completion. They also restore and renovate older buildings, and provide a full maintenance service for businesses and institutions, covering plumbing, carpentry, electrical, flooring, painting and decorating. The firm is operated by Killian and Emily McCarthy and employs local, qualified tradespeople. Kenmona is fully insured and registered, and is Homebond Approved.

RenovationsAttic ConversionsMaintenanceBuilding Services

Lislevane Construction Limited

Bandon, Co. Cork

Construction company specializing in new residential and commercial construction, extensions, structural renovations, groundwork, and project management.

house-extensionshome-renovationsgroundworks

Mackee Construction Limited

Bandon, Co. Cork

Mackee Construction Limited is a building company with offices in Bandon, Co. Cork, operating throughout Ireland. The team brings over 40 years of combined construction experience. Their work includes a total refurbishment of a 1950s bungalow, a bathroom conversion into a mobility wetroom, and a project at Carnew Nursing Home. Client testimonials highlight their reliability, honesty, and ability to complete work on time and on budget.

Total RefurbishmentBathroom ConversionMobility Wetroom InstallationNursing Home Construction

Martin Roche Construction

Youghal, Co. Cork

Martin Roche Construction, based in Glanworth, North Cork, has been building since 2000. The company focuses on one-off housing, renovations and extensions, with personal supervision of every project. All work is carried out to current building regulations, and the firm is affiliated with Home Bond. They emphasise energy efficiency and comfort in renovation work, and offer a complete, stress-free service from start to finish.

One-Off HousingHouse ExtensionsHome RenovationsProject Management

Murphy & O'Sullivan Ltd.

Cork City, Co. Cork

Established in 1968, Murphy & O’ Sullivan Ltd. is a fully Irish owned Cork based construction company. We are a general contracting company, whose experience ranges from new build to renovation and refurbishment.

home-renovations

Parker Construction Ltd

Youghal, Co. Cork

Parker Construction Ltd is a building and carpentry firm based in Youghal, Co. Cork, serving Cork and Waterford. The company employs a team of qualified and experienced tradesmen and offers a range of services including first and second fixing, roofing, tiling, slating, flooring, and paneling. Building services cover new builds, extensions, refurbishments, alterations, attic conversions, and renovations to a turnkey standard. They also carry out blockwork and underfloor heating. The firm aims to deliver high-standard work on time and within budget.

1st & 2nd FixingRoofingTilingSlating

RJ O'Brien Building Contractors

Carrigaline, Co. Cork

RJ O'Brien Building Contractors is a building contractor based in Ballygarvan, County Cork, with over 50 years of experience in commercial and residential projects. The company provides a range of services including project management, building maintenance, complete home renovations, extensions, and new builds. It also offers interior design consultations, which can be conducted via phone or video call, and includes services such as custom design, 3D visuals, mood boards, floor plan layouts, and colour schemes. The firm employs an in-house team of carpenters, decorators, electricians, plumbers, and specialty trades. It serves the Cork area, operating from Monday to Friday, 9am to 5pm.

Interior Design ConsultationInterior Design PackagesCommercial ProjectsResidential Projects

Rose Construction Ltd.

Cork City, Co. Cork

Building & Civil Engineering Contractors with over 42 years' experience, offering services including renovation/refurbishments, fit/retail, civil, heritage, fire & flood, and facilities.

home-renovations

SHS Construction

Ballincollig, Co. Cork

SHS Construction is a construction company based in Ballincollig, County Cork, with over 20 years in the construction industry. The company carries out all aspects of construction, including new builds, extensions, renovations, and maintenance and insurance repairs. It also provides design, planning application, and build services for domestic, commercial, and local authority contracts. SHS Construction is registered with the Construction Industry Register Ireland (CIRI) and is a member of Homebond and IOSH. Steven personally project manages all buildings, applying time efficiency, workflow methods, scheduling, and effective communication to all projects.

house-extensionshome-renovations

Southern Renovations

Cork City, Co. Cork

Specialising in home renovations in Cork since 2005, offering full interior renovations including bathroom and kitchen renovations, interior design, and project management.

home-renovations

Sweetnam Builders Ltd

Kinsale, Co. Cork

Sweetnam Builders Ltd is a family owned construction company based in Ballinspittle, Kinsale, established in 2000 by brothers Garrett and Ian Sweetnam, who are third generation builders. The company specialises in all aspects of construction, including new homes, renovations, extensions, commercial projects, civils, and fit-out. Garrett is qualified in Construction Management, while Ian is a Chartered Quantity Surveyor with experience managing major projects. The company uses a team of highly qualified local tradesmen, with the Sweetnam brothers managing every aspect of the process. Their goal is to complete all projects on time to the highest standard, ensuring client needs and expectations are met. Recent projects include a community centre in Kilmacsimon, a development in Midleton, an extension and renovation in Bandon, and a new dwelling in Ballinadee.

New HomesRenovationsExtensionsCommercial

The Renovation Centre

Cork City, Co. Cork

Full renovations, extensions and retrofits across Cork. Whole-house transformations, planned, managed and built by one dedicated team.

home-renovationshouse-extensions

Timothy Bowen Construction

Cork City, Co. Cork

Timothy Bowen Construction, trading as Timothy Bowen Building & Maintenance, has been carrying out extensions, renovations and new builds across Cork since 2013. The company handles projects from a single-room renovation to a complete house extension or new build, with services including kitchens, bathrooms, full interior refits, attic conversions, driveways (block paving, tarmac, resin-bound and gravel), bespoke garden studios, home offices and leisure rooms, plus property maintenance and small works. Work is carried out to Irish building regulations, with full public liability insurance, detailed written quotes, and a commitment to timelines. The team covers Cork city and county, and most work comes from repeat clients and personal referrals.

House ExtensionsHome RenovationsNew BuildsAttic Conversions

Titan Construction

Cork City, Co. Cork

Titan Construction is a building contractor in Cork offering a full service from concept to completion, with in-house architects, engineers, and quantity surveyors. They handle new build homes, house extensions (single and two storey), attic conversions, and home renovations. The company also assists with planning permission, design build services, and liaising with utility companies and local authorities. They provide property inspections for potential buyers and work with specialist contractors for heating, lighting, audio-visual, and renewable energy solutions.

New Build HomesHouse ExtensionsAttic ConversionsHome Renovations

VIP Renovations

Cork City, Co. Cork

Professional building contractor and full-service home renovation company in Cork, specializing in renovations, extensions, conversions, custom wardrobes, bespoke kitchens, doors, external wall insulation, ventilation, and air conditioning.

home-renovationshouse-extensionsattic-conversions

Common questions

What order should a renovation happen in?

Structural work, then strip out, then first fix of wiring, plumbing and wastes while everything is open, then plastering, then second fix, then decoration. Kitchens, bathrooms and flooring come near the end. The reason to care as a homeowner is that decisions have deadlines attached: where the sockets and the shower go has to be settled before first fix, not when the room is being finished.

How should unknowns be handled in the price?

By naming them. A builder who has not opened up a floor cannot know what is under it, so the reasonable approach is a fixed price for the defined work plus an agreed way of pricing anything found, with a written variation before that extra work proceeds. A single confident number covering a house nobody has looked inside is less reassuring than it sounds.

Should I move out while the work is done?

It depends on how much of the services are being disturbed. Losing heating, hot water or the only working bathroom for weeks is the usual breaking point, and a phased job that keeps one bathroom live is a common compromise. Staying in the house is slower and dustier and generally costs less; moving out is faster because the trades can work through the whole house at once.

What paperwork should I have at the end?

A Completion Certificate from the Safe Electric registered contractor for any new circuits or fuse board work, a Declaration of Conformance from the Registered Gas Installer for any gas work, product guarantees for materials, and the builder's own workmanship guarantee in writing. A purchaser's solicitor may look for these years later, so keep them with the deeds rather than in a drawer.

Other builders services in Co. Cork

Looking more broadly? Browse all builders in Co. Cork.