Find an Extension Builder in Thorney Island

Find a local extension builder near you. We have 978 trusted and reviewed extension builders in Thorney Island to choose from, based on 626 reviews.





POST YOUR JOB

Tell us about the work you need doing around your home.

RECEIVE UP TO 3 QUOTES

Up to 3 Extension Builders in Thorney Island will then be in touch to quote for the work.

CHOOSE YOUR EXTENSION BUILDER

Compare quotes then choose your preferred Thorney Island Extension Builder.

Extension Builders in Thorney Island

Filter by:

  • Within 60 minutes
    • Within 60 minutes
    • Within 45 minutes
    • Within 30 minutes
    • Within 20 minutes
    • Within 10 minutes
  • Any rating
    • Any rating
    • 5 star rating
    • 4 star rating
    • 3 star rating
  • Sort by:

  • Recommended
    • Recommended
    • Closest
    • Most reviews
    • Highest rating
  • 1-20 of 978 extension builders

    Hi we are a family run roofing business. All our work done to high standard and all our work is guaranteed and fully insured. Many thanks

    Latest Roof Repair Review

    "Quick and helpful as quoted, will use again."

    Reviewed by on
    Based in PO10 7QA, Emsworth
    Extension Builder covering Thorney Island
    Member since Aug 2024
    ID Checked

    JY’S BUILDING & MAINTENANCE , a building and maintenance company based in the south. We specialise in providing reliable, high-quality services, ranging from general property maintenance to larger-scale building projects

    Latest Internal Walls Review

    "Josh has done a great job repairing all the water damage to my flat caused by my upstairs neighbour. This included stain blocking the ceilings and walls where necessary, then repainting them, re-hanging a door which, due to the w..."

    Reviewed by on
    Based in PO4 9PH, Portsmouth
    Extension Builder covering Thorney Island
    Member since Oct 2025
    Public liability insurance

    I’ve been in business 30 yrs I used to buy and sell properties back in the mid 90s so I have a wealth of experience in the building trade , been recommended this site so I thought I’d give it a go and show my worth

    Latest Damp Proofing Review

    "Very competent friendly team . Work done to a very high standard , particularly as this is a listed building . I would recommend to others"

    Reviewed by on
    Based in PO2 8EX, Portsmouth
    Extension Builder covering Thorney Island
    Member since Sep 2025
    ID Checked

    In the building business for over 4o years, qualifications ,insurance and years of experience.

    Latest Stud Wall Review

    "Jim was exceptionally helpful, clear, and did a thoroughly good job giving us pointers around the house. Cannot recommend him enough"

    Reviewed by on
    Based in SO19 2DB, Southampton
    Extension Builder covering Thorney Island
    Member since Sep 2023
    ID Checked

    Builder with over 20 years of experience. Fully insured. I cover all of Hampshire. Any brickwork or building undertaken, from garden walls to new builds.

    Latest Conservatory Review

    "Work completed to a high standard, very tidy on site. Good communications. work completed promptly. Would contact again for future work."

    Reviewed by on
    Based in SO18 4ET, Southampton
    Extension Builder covering Thorney Island
    Member since Aug 2025
    Public liability insurance

    Have been in the building trade 45 years fully insured. From small jobs to extentions we provide the full service

    Latest Garage Conversion Review

    "Very friendly and professional. With over 45 years in trade Chris was happy to answer any queries on other projects I was doing. Always on time and very happy with completed garage conversion."

    Reviewed by on
    Based in SO30 4AE, Hedge End
    Extension Builder covering Thorney Island
    Member since Nov 2020
    ID Checked

    We at Skyeline Construction Ltd have been in the construction , refurbishment industry for over 30 years. We work for commercial and domestic clients with contracts , jobs varying from new build to changing a door. The company prides itself on always...

    Latest Internal Walls Review

    "Keith was prompt in providing a quote and we quickly arranged for the work to be completed! Keith and his colleagues got the job done with minimal mess and contributed to the highest standard! I highly recommend Skyline Constructi..."

    Reviewed by on
    Based in PO7 5ER, Purbrook
    Extension Builder covering Thorney Island
    Member since Oct 2024
    ID Checked

    We are southern based building company Specialising in bathrooms kitchens extensions Plastering K render Spray k render And all aspects of building More pictures to follow and references if needed Thanks for looking Tom

    Based in PO6 2RU, Portsmouth
    Extension Builder covering Thorney Island
    Member since Mar 2022
    ID Checked

    We are a multi skilled work force covering all general building/ shop fitting We also cover work abroad Welding Electrical Carpentry Floor laying Tiling

    Based in PO10 8LE, Emsworth
    Extension Builder covering Thorney Island
    Member since Aug 2014

    I / we are a team of very skilled builders that have spent the last 20 plus years serving a very large construction company. We have turned over some very large projects i.e 300 tonne of steel with the demolition into a large project in Chichester,...

    Based in PO10 8NZ, Emsworth
    Extension Builder covering Thorney Island
    Member since May 2020
    ID Checked

    Hello and welcome to G2D construction group a company that strives to deliver your dream space to your property with over 15 years of experience with in our trades all off our work is finished to the highest possible standard to ensure a happy custom...

    Latest Walls & Pillars Review

    "Got straight to the point, no fuss and did the job well."

    Reviewed by on
    Based in PO2 8HU, Portsmouth
    Extension Builder covering Thorney Island
    Member since Dec 2025
    ID Checked

    I’ve been in business for around 10 years, offering reliable and professional services for all types of jobs – no job is too big or too small. Based in Southampton and happy to travel to surrounding areas. Experienced, trustworthy, and committed to...

    Latest Internal Doors Review

    "Mathew and Les were brilliant workmen,really keen to get the job done correctly .Original door and frame dated back to 1928 and the work to remove it and insert the new door and frame was'nt easy but they made sure the final resul..."

    Reviewed by on
    Based in SO19 6LE, Southampton
    Extension Builder covering Thorney Island
    Member since Nov 2025
    ID Checked

    About Niko’s Plumbing and Heating Services At Niko’s Plumbing and Heating Services, we specialize in central heating systems, boiler installations, repairs, and full bathroom refurbishments for both domestic and commercial customers. Our experienced...

    Latest Plumbing Repair & Maintenance Review

    "Total expert in his trade"

    Reviewed by on
    Based in PO7 5NR, Waterlooville
    Extension Builder covering Thorney Island
    Member since Aug 2021
    ID Checked

    Here at Rightview home renovations we have a combined total of over 50 years of experience. We offer services such as window replacement home extension building and anything in between while providing friendly service and respecting all customer&#...

    Latest uPVC Windows & Door Review

    "Competitive price. Very friendly and informative service from John. Also he initially rejected a supplied window pane because of a scratch ensuring that the final product was of good quality. Quickly fitted once unit arrived. I wo..."

    Reviewed by on
    Based in SO31 9AL, Warsash
    Extension Builder covering Thorney Island
    Member since Jan 2023
    ID Checked

    Solly Groundworks are based in Southampton Hampshire & across the south coast. We specialise in a wide range of groundworks, civil engineering and planting services, including residential, commercial, and industrial construction. Our team of profe...

    Latest Gardener / Garden Designer Review

    "Solly helped us with a floor that was sinking in between our main house and an extension. When removing the old floor before having a new one layed we realised that we had an unforeseen issue. Being local we called on Solly to hel..."

    Reviewed by on
    Based in SO19 8FS, Southampton
    Extension Builder covering Thorney Island
    Member since Oct 2025
    Public liability insurance

    We are a family run business that cover all aspects of building work, carpentry, landscaping, garden maintance, maintance, waste clearance. We work to ensure your projects are carried out to the highest standards. We offer a free quotation and prov...

    Latest Garden Maintenance Review

    "Proffesional, knowledgeable, and reliable."

    Reviewed by on
    Based in PO11 9QX, Hayling Island
    Extension Builder covering Thorney Island
    Member since May 2024
    ID Checked

    At Big Dog Builders Ltd, we provide high-quality groundworks solutions across Havant and the surrounding areas. With over a decade of hands-on experience, our team delivers reliable, efficient, and professional services tailored to domestic, commerci...

    Latest Brick/Block Paving Review

    "Ben completed everything as discussed in a day with outstanding result. Very pleased. Would recommend"

    Reviewed by on
    Based in PO9 3DL, Havant
    Extension Builder covering Thorney Island
    Member since Aug 2025
    Public liability insurance

    Tony recently completed a project which involved extending and adding a floor to a tired old bungalow. This entailed extending at the back, taking off the entire roof, and installing preformed attic trusses. insulate, felt, batten and tile roof an...

    Latest Fireplace Review

    "Prompt and quick service. Highly reccommended. Would definately use Tony again. Very pleased with the completed work. He arrived at the time he said he would and got straight on with the removal of my fireplace."

    Reviewed by on
    Based in GU3 2DF, Normandy
    Extension Builder covering Thorney Island
    Member since Dec 2017
    Public liability insurance

    All building works undertaken, no job too big or too small. Fast friendly service and all work guaranteed.

    Latest Flat Pack Furniture Assembly Review

    "Excellent service Wardrobe came exactly as imagined Very professional Will contact again for further works"

    Reviewed by on
    Based in PO5 3QT, Portsmouth
    Extension Builder covering Thorney Island
    Member since Aug 2025
    ID Checked

    Gibson Construction service provided a range of building service from patios to double storey extension. We keep are self up to date with prices of materials to reduce cost.

    Latest Brick/Block Paving Review

    "Fair price. Good communication. No issues. Well recommended. Will definitely use again."

    Reviewed by on
    Based in BN13 2JT, Worthing
    Extension Builder covering Thorney Island
    Member since Mar 2025
    ID Checked
    Become a member

    Over 50,000 tradespeople nationwide use MyJobQuote

    Sign up as a trade
    Our Reviews

    All reviews are submitted by homeowners who have had work completed as part of using our service. Whilst every effort is made to verify and check reviews, we ask all homeowners to conduct their own research and follow our Homeowner Checklist before hiring.

    To understand more about our reviews process, please visit our Reviews Policy.

    Find Extension Builders Near You

    Trusted Extension Builders in other locations

    Show more

    Recently posted Extension Builders jobs

    Join over 1,000,000 happy homeowners who have posted their job on MyJobQuote.

    Job posted in Littlehampton

    Considering buying a property but need to factor in the costs of some work before putting in an offer. The property is in Felpham

    Job posted in Waterlooville

    Build a single story extension at front of bungalow next to adjoining kitchen. With Windows and French doors, flat roof with lanterns in celling.

    Job posted in Bognor Regis

    I would like to add a fourth bedroom to the property and would like a quote please and a call. Here are the pictures of the property.

    Job posted in Winchester

    A single story extension approx 30sq m with downstairs toilet and small utility and a loft conversion with en suite approx 20sq m.

    Job posted in Gosport

    Single story extension on top of our garage

    Job posted in Littlehampton

    Considering buying a property but need to factor in the costs of some work before putting in an offer. The property is in Felpham

    Job posted in Waterlooville

    Build a single story extension at front of bungalow next to adjoining kitchen. With Windows and French doors, flat roof with lanterns in celling.

    Job posted in Bognor Regis

    I would like to add a fourth bedroom to the property and would like a quote please and a call. Here are the pictures of the property.

    Job posted in Winchester

    A single story extension approx 30sq m with downstairs toilet and small utility and a loft conversion with en suite approx 20sq m.

    Job posted in Gosport

    Single story extension on top of our garage

    Job posted in Fareham

    build an extension at rear of property 8m x 3.5m (28m2)

    Job posted in BORDON

    Looking to demolish our current conservatory and replace with a single storey extension to extend our kitchen/dining area. This will also involve remo...

    Job posted in Southampton

    Extend out from living room and kitchen along back of house. Around 16m2.

    Job posted in Eastleigh

    build a single story extension to the rear of my property to extend the kitchen / living open plan area into the garden, to be around 20 square metres...

    Job posted in Guildford

    Build the single story extension with bathroom inside

    Job posted in Fareham

    build an extension at rear of property 8m x 3.5m (28m2)

    Job posted in BORDON

    Looking to demolish our current conservatory and replace with a single storey extension to extend our kitchen/dining area. This will also involve remo...

    Job posted in Southampton

    Extend out from living room and kitchen along back of house. Around 16m2.

    Job posted in Eastleigh

    build a single story extension to the rear of my property to extend the kitchen / living open plan area into the garden, to be around 20 square metres...

    Job posted in Guildford

    Build the single story extension with bathroom inside

    Job posted in Liss

    build single story extension on back of house

    Job posted in Chichester

    Build a single story extension to the rear of the house. Approximately 8 square metres.

    Job posted in Southampton

    Two storey extention on side oh house

    Job posted in Chichester

    Single storey rear extension - approximately 32m2. Plans complete and planning permission granted in principle, awaiting final approval.

    Job posted in Eastleigh

    Single story brick extension 27 square meters

    Job posted in Liss

    build single story extension on back of house

    Job posted in Chichester

    Build a single story extension to the rear of the house. Approximately 8 square metres.

    Job posted in Southampton

    Two storey extention on side oh house

    Job posted in Chichester

    Single storey rear extension - approximately 32m2. Plans complete and planning permission granted in principle, awaiting final approval.

    Job posted in Eastleigh

    Single story brick extension 27 square meters

    Job posted in Ryde

    I would like to extend my property out by 3.5m width and 3.5m length , to make a kitchen

    Job posted in Havant

    Build single story extension on the back of house to enlarge kithcen. Small goal post steel frame needed due to lack of brick wall, the posts will bea...

    Job posted in Eastleigh

    build single story extension at rear of the house, including bedroom and toilet / shower room

    Job posted in Worthing

    Broken wooden Canopy to be removed.

    Job posted in Fareham

    Double storey extension back of my house, 2.30m deep and 6.42m wide. Downstairs to include kitchen and new plumbing for new downstairs toilet. Ups...

    Job posted in Ryde

    I would like to extend my property out by 3.5m width and 3.5m length , to make a kitchen

    Job posted in Havant

    Build single story extension on the back of house to enlarge kithcen. Small goal post steel frame needed due to lack of brick wall, the posts will bea...

    Job posted in Eastleigh

    build single story extension at rear of the house, including bedroom and toilet / shower room

    Job posted in Worthing

    Broken wooden Canopy to be removed.

    Job posted in Fareham

    Double storey extension back of my house, 2.30m deep and 6.42m wide. Downstairs to include kitchen and new plumbing for new downstairs toilet. Ups...

    Post your job Sign up as a trade
    Are you a trade? Become a member and get access to local jobs today!
    See demand near you
    Ready to find a tradesman near you?

    Over 1 million homeowners and over 50,000 tradespeople
    use MyJobQuote nationwide each year