Find an Extension Builder in Hertfordshire

Find a local extension builder near you. We have 7,052 trusted and reviewed extension builders in Hertfordshire to choose from, based on 3,121 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 Hertfordshire will then be in touch to quote for the work.

CHOOSE YOUR EXTENSION BUILDER

Compare quotes then choose your preferred Hertfordshire Extension Builder.

Extension Builders in Hertfordshire

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 7,052 extension builders

    Taylord building services for all you carpentry and building requirements. while we specialise in extensions in conversions we still have a minor works department which means we can cater for any size job no matter how small we can help with any size...

    Latest Garage / Outbuilding Construction Review

    "Completed the job well and on time to the budget price given"

    Reviewed by on
    Based in SG1 5PR, Stevenage
    Extension Builder covering Hertfordshire
    Member since Apr 2019
    ID Checked

    Hi, I am a Chartered Builder with 21 years experience in residential construction and also I am a surveyor, we offer double single and wrap around extensions, new build single properties, bricklaying, repair works, refurbishments, bathrooms & kitchen...

    Latest Builder Review

    "Very happy with the work done, great finish and so where Watford council who signed it off."

    Reviewed by on
    Based in AL2 1HU, London Colney
    Extension Builder covering Hertfordshire
    Member since Nov 2020
    Public liability insurance

    CCS Ltd has been set up in 2023, however, we are working in the construction industry since 2015. During these years we have covered most aspects in construction, such as: new basement built, underpinning, extensions, lofts, refurbs, new builds and m...

    Latest Garage Conversion Review

    "Construction Solution LTD. Where professional throughout the entire garage conversion. They kept to the time times and the work was completed at a high standard. I will be using them again and also recommending them to others."

    Reviewed by on
    Based in HA8 5TF, Edgware
    Extension Builder covering Hertfordshire
    Member since Oct 2023
    ID Checked

    Hello, I hope this email finds you well. I am excited to introduce our bespoke timber frame building services, designed to cater to your unique needs with precision and care. Our innovative approach incorporates no mess ground screw bases, ensuring...

    Latest Extension Review

    "Excellent in every way - we would highly recommend Eco Frame Build! Garry was a fantastic tradesperson who did a first class job on my father’s new conservatory. An excellent professional builder, who went over and above to delive..."

    Reviewed by on
    Based in MK40 3EQ, Bedford
    Extension Builder covering Hertfordshire
    Member since Sep 2024
    ID Checked

    Professional and experienced builders. We specialise in extensions, loft conversion, planning advice, property conversions to flats and HMOs. Free quotes

    Latest External Rendering Review

    "I had an excellent experience with AJD property investment LTD. Jagdeep was fully involved from the initial quote until the finish of the job. He kept me fully informed and explained in detail what needed to be done especially w..."

    Reviewed by on
    Based in UB6 9HF, Greenford
    Extension Builder covering Hertfordshire
    Member since Aug 2024
    ID Checked

    Construction company mainly focused on extension and full renovations in domestic housing section Fully qualified and targeting high end finish on every job

    Latest Builder Review

    "Would never use another builder! Edgar and his team are so professional, brilliant to deal with and always go over and above. I cannot recommend them highly enough!"

    Reviewed by on
    Based in HA9 7DQ, Wembley
    Extension Builder covering Hertfordshire
    Member since Oct 2024
    ID Checked

    We are a family run business with 30yrs experience in the building trade we cover domestic and commercial work with some very impressive projects completed on budget and on time

    Latest Carpet Laying Review

    "I had Steve from Universal property services, to replace some floorboards, he provided a quote & as I was happy will that, he was able to do the job the same week. His Work is of a high standard, he is reliable,, knowledgeable &..."

    Reviewed by on
    Based in AL2 1BP, London Colney
    Extension Builder covering Hertfordshire
    Member since Apr 2024
    ID Checked

    We are a small company who cover all building maintenance jobs we have a number of tradesmen to complete any job you may have not n the most cost effective way we have over 40 years experience so your property is safe in our hands we cover Essex and...

    Latest Conservatory Review

    "Great communication up until the install, spoke with us about all what I wanted and eventually made a dream to come reality. Would highly recommend them!"

    Reviewed by on
    Based in CM8 1EY, Witham
    Extension Builder covering Hertfordshire
    Member since Mar 2022
    ID Checked

    We are builders Based In Essex, our construction company undertakes a wide variety of building work including domestic and commercial projects. Extensions, Loft Conversions and General Building services are all provided with planning support and advi...

    Latest Builder Review

    "James and his team was fantastic throughout, after having many chancers quote for my work he walked me through the whole process and eliminated any of my concerns and fears, they were extremely polite and tidy up every day before..."

    Reviewed by on
    Based in CM18 6AH, Harlow
    Extension Builder covering Hertfordshire
    Member since Feb 2024
    Public liability insurance

    Within 10 years of experience and activity across London , we are a great team and subcontractors and we are able to take in and carry out to the highest standards any type of jobs from drawing plans design to the last bit of work done perfectly!

    Latest Builder Review

    "Raul and his team were spot on. Couldn’t Of asked for a better team to refurb my 4 bedroom house. Always on time, the house was always cleaned before the day finished and met the deadline they had given me. Highly recommend and wi..."

    Reviewed by on
    Based in WD6 2BN, Borehamwood
    Extension Builder covering Hertfordshire
    Member since Jun 2024
    ID Checked

    Building, plumbing and heating specialists, from small domestic fixes to large commercial projects We use a very unique failsafe plumbing and connection method, not common place in the UK. WE DO NOT USE PUSH-FIT and guarantee no leaks. Please enquir...

    Latest Extension Review

    "I would just like to say a big thank you to this company for all their hard work They have done for us. Especially the main man Valentino!!! We started off needing 2 bathroom extensions done, which I had searched for months trying..."

    Reviewed by on
    Based in KT22 8RA, Leatherhead
    Extension Builder covering Hertfordshire
    Member since May 2020
    ID Checked

    I’m a honest hard working builder who takes pride in my work. My expertise relies in all aspects of building extensions, garage's and porches, Also garden walls, groundwork, pipework patios & block paving.

    Latest Concrete Base Review

    "Terry was very accommodating and professional. Very tidy and efficient work completed and I would highly recommend T. Doyle construction for future work."

    Reviewed by on
    Based in SG18 0NW, Biggleswade
    Extension Builder covering Hertfordshire
    Member since Apr 2023
    ID Checked

    Your local building firm with over 10 years experience

    Based in AL6 9JG, Welwyn
    Extension Builder covering Hertfordshire
    Member since Mar 2024

    Efjprojects.com Is a family run Building Company. They delivery high standards and beyond. Covering all aspects of Building works, Property development and Landscape to create your perfect outdoor space.

    Based in AL8 7XE, Lemsford
    Extension Builder covering Hertfordshire
    Member since Apr 2024

    JCU who are we? We are a company that started as a dream by the director Joe Abbott. To build a better construction and plant hire image and take away the stress away from building your future. We own various plant that will help you drive costs dow...

    Based in AL6 9SU, Welwyn
    Extension Builder covering Hertfordshire
    Member since Jan 2023
    ID Checked

    Hello,my name is Mihaela,I am the director of this company.Th company is new but the our team is having 20 years experience in construction,as well we like to provide to our Custumer a good experience.for that we work next to them to give them the be...

    Based in AL9 5DL, Hatfield
    Extension Builder covering Hertfordshire
    Member since Mar 2020
    ID Checked

    I looking some job for labourer ganger or traffic Marshall gateman

    Based in AL10 0PE, Hatfield
    Extension Builder covering Hertfordshire
    Member since Aug 2022

    Hi, we are a building, electrical and refurbishment company in wgc, we carry out garage conversions to re-wires and everything in between, all trades covered, fully insured , niceic and gas safe certificates issued, we also work in the commercial se...

    Based in AL7 3UW, Welwyn Garden City
    Extension Builder covering Hertfordshire
    Member since Jan 2023
    ID Checked

    U&A Builder is a family run business owned by Urim and Aryan based in Hatfield, Hertfordshire which was founded in 2014. For every job we have undertaken, every customer has been satisfied with the quality provided and the end result. (We have provid...

    Based in AL10 0EJ, Hatfield
    Extension Builder covering Hertfordshire
    Member since Feb 2024
    ID Checked

    S.L Property Services specialises in a wide range of property maintenance and renovation services in Hertfordshire and surrounding. Our services include basic handyman tasks and extensive renovation, bespoke joinery, flat pack assembly, kitchen inst...

    Based in AL6 9DB, Ayot St. Lawrence
    Extension Builder covering Hertfordshire
    Member since Jun 2024
    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.

    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 Buckhurst Hill

    Single storey extension Approx 13 sq m

    Job posted in Epping

    Downstairs already has an extension into the garden (3.5 m out by 9 m), want the second floor to come out 2 m (by 9 m)- this affects three back rooms:...

    Job posted in Aylesbury

    I am looking for bricklayers for my extension any have experience with bricklayers please contact me

    Job posted in Hitchin

    Single story extension to the kitchen to be able to have a table and seated area. Roughly 10 m² to be added and make an L shape room. With patio doors...

    Job posted in Loughton

    Double storey side extension, 7x4.2. Fit a storage cupboard for coats, fit a wardrobe and fit a Tv unit, skirting and covings all over and a back do...

    Job posted in Buckhurst Hill

    Single storey extension Approx 13 sq m

    Job posted in Epping

    Downstairs already has an extension into the garden (3.5 m out by 9 m), want the second floor to come out 2 m (by 9 m)- this affects three back rooms:...

    Job posted in Aylesbury

    I am looking for bricklayers for my extension any have experience with bricklayers please contact me

    Job posted in Hitchin

    Single story extension to the kitchen to be able to have a table and seated area. Roughly 10 m² to be added and make an L shape room. With patio doors...

    Job posted in Loughton

    Double storey side extension, 7x4.2. Fit a storage cupboard for coats, fit a wardrobe and fit a Tv unit, skirting and covings all over and a back do...

    Job posted in Stepney

    Looking for a quote for timber frame stick build till weathertight stage, an extension of 6x5m ground floor + 3x5m first floor.

    Job posted in Loughton

    Rear of house approx 22sqm, with kitchen, utility & toilet

    Job posted in West Ham

    Loft conversion and ground floor open plan with extension to side

    Job posted in Beckton

    Need to extend rear pitch room

    Job posted in Stanmore

    Build single storey extension roughly 31m square

    Job posted in Stepney

    Looking for a quote for timber frame stick build till weathertight stage, an extension of 6x5m ground floor + 3x5m first floor.

    Job posted in Loughton

    Rear of house approx 22sqm, with kitchen, utility & toilet

    Job posted in West Ham

    Loft conversion and ground floor open plan with extension to side

    Job posted in Beckton

    Need to extend rear pitch room

    Job posted in Stanmore

    Build single storey extension roughly 31m square

    Job posted in St Albans

    Garage conversion (integral single garage, ~12sqm)

    Job posted in West Brompton

    The rear court yard presently has a 10x 10 ft conservatory which needs to be extended to a full room for a kitchen and eating space. The conservatory...

    Job posted in Beaconsfield

    building a wrap around extension that is 65 square meters, need a quote for brick work, screed flooring and roofing

    Job posted in Bedford

    Hi, I want to convert my garage into a habitable/usable space,I.e. flooring, putting up ceiling, insulation, etc.

    Job posted in Stamford Hill

    Hi, We’re looking at making an offer on a property that currently has a downstairs bathroom. We’d like to move the bathroom upstairs (replacing the s...

    Job posted in St Albans

    Garage conversion (integral single garage, ~12sqm)

    Job posted in West Brompton

    The rear court yard presently has a 10x 10 ft conservatory which needs to be extended to a full room for a kitchen and eating space. The conservatory...

    Job posted in Beaconsfield

    building a wrap around extension that is 65 square meters, need a quote for brick work, screed flooring and roofing

    Job posted in Bedford

    Hi, I want to convert my garage into a habitable/usable space,I.e. flooring, putting up ceiling, insulation, etc.

    Job posted in Stamford Hill

    Hi, We’re looking at making an offer on a property that currently has a downstairs bathroom. We’d like to move the bathroom upstairs (replacing the s...

    Job posted in Luton

    Building a small toilet and shower beside the staircase. All connection available nearby.

    Job posted in ENFIELD

    Build Single Story Extension, with pitched tiled roof and 2 roof windows and byfold doors. Installation of RSJ to rear of building and knock through....

    Job posted in Aylesbury

    I would like to build one floor extension which includes a living room and bedroom in the ground floor and bedroom and bathroom in the first floor. I...

    Job posted in Harlow

    6m long walls on both sides and 7m width

    Job posted in LUTON

    Build double storey side extension to aprooved plan and spec.to include wc and kitchen

    Job posted in Luton

    Building a small toilet and shower beside the staircase. All connection available nearby.

    Job posted in ENFIELD

    Build Single Story Extension, with pitched tiled roof and 2 roof windows and byfold doors. Installation of RSJ to rear of building and knock through....

    Job posted in Aylesbury

    I would like to build one floor extension which includes a living room and bedroom in the ground floor and bedroom and bathroom in the first floor. I...

    Job posted in Harlow

    6m long walls on both sides and 7m width

    Job posted in LUTON

    Build double storey side extension to aprooved plan and spec.to include wc and kitchen

    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