Find an Extension Builder in Harwich

Find a local extension builder near you. We have 400 trusted and reviewed extension builders in Harwich to choose from, based on 295 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 Harwich will then be in touch to quote for the work.

CHOOSE YOUR EXTENSION BUILDER

Compare quotes then choose your preferred Harwich Extension Builder.

Extension Builders in Harwich

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 400 extension builders

    I have been in the building industry for 7 years, gaining experience in a variety of work including driveways, extensions, small brick walls, and more. Reliable, skilled, and committed to high-quality workmanship.

    Based in CO12 3AT, Harwich
    Extension Builder covering Harwich
    Member since Aug 2025
    ID Checked

    At PSD Essex property maintenance & building service. we undertake all kinds of DIY home repair and general property maintenance tasks. renovations extensions conversions Our experience is here to get the job done quickly and professionally, we have...

    Based in CO12 4XU, Harwich
    Extension Builder covering Harwich
    Member since Dec 2019
    ID Checked

    Need a bedroom converted into 2 bedroom .. stud walls. Electrics etc

    Based in CO12 4HE, Harwich
    Extension Builder covering Harwich
    Member since May 2025

    General building and kitchen installation My name is Matt and I've been in the trade for over 20years, I'm a qualified carpenter and joiner. I believe in a fair and friendly service, attention to detail is always at the top of my list. *kit...

    Based in CO12 3QE, Harwich
    Extension Builder covering Harwich
    Member since Dec 2021
    ID Checked

    Crown bricklaying & construction Covering all areas of Essex & Suffolk

    Based in CO12 3JB, Harwich
    Extension Builder covering Harwich
    Member since Nov 2025

    BTS Building & Restoration, is a family run business that has been established for over twenty years . We Specialise in all aspects of building ranging from fitting a plug to building your dream home.With a range of trusted tradesman we pride ourse...

    Based in CO12 4JU, Harwich
    Extension Builder covering Harwich
    Member since Dec 2023
    ID Checked

    South east handy man Driveway and paving specialists ensure your job is done efficiently and to a very high standard with quality being the main priority whilst still being cost efficient and affordable. All building and groundwork’s projects under...

    Based in CO12, Harwich
    Extension Builder covering Harwich
    Member since May 2024
    ID Checked

    I do all landscaping work and many odd jobs round the house to from tiling to kitchen fitting I cover most of north Essex and south Suffolk we are a small hard working team

    Latest Internal Painting Review

    "Excellent job by Chris and his team. This was a big job but he was prompt, conscientious and stayed on the job long after normal working hours. He asked to be onsite when the job was complete to make sure everyone was happy and he..."

    Reviewed by on
    Based in CO7 8PA, Great Bentley
    Extension Builder covering Harwich
    Member since Feb 2026
    ID Checked

    fully qualified, family run construction company. no job too big or small. friendly and helpful service.

    Latest Builder Review

    "Cian has done an excellent job on a recent garden renovation. Couldn’t of asked for any better."

    Reviewed by on
    Based in IP14 2RJ, Stowmarket
    Extension Builder covering Harwich
    Member since Feb 2026
    ID Checked

    Self employed high quility builder with 30 years experience. All work quoted for free. Insured and guaranteed. Anything from changing a tap to a kitchen extension witin half an hour of ipswich. All work covered by a £2 million public liability insur...

    Latest General Brick Laying Review

    "Awesome work thanks Matt, highly recommend"

    Reviewed by on
    Based in IP5 2GH, Kesgrave
    Extension Builder covering Harwich
    Member since Nov 2025
    Public liability insurance

    20 years experience in building trade, bricklayer by trade. Keen reliable fully insured. All building work undertaken brick work extensions, garden walls, repointing, patios, driveways, fencing nothing turned away

    Latest Fencing & Gates Review

    "I am very pleased with the work that Ricky and his team have done, replacing the unstable garden wall with a fence and it was completed in the time scale given 2 days, they all worked very hard also a very reasonable quote to ...."

    Reviewed by on
    Based in CO16 8YJ, Clacton-on-sea
    Extension Builder covering Harwich
    Member since Sep 2025
    ID Checked

    Oames construction services is a small independent company with over 25 years experience in the industry. We pride ourselves on our professionalism and quality of work. All works are guaranteed and fully insured. Based in Essex and Hampshire

    Latest Internal Painting Review

    "John was very polite and on time! He did a fantastic job and has given me a 12 month guarantee. I will definitely use him again. thanks John."

    Reviewed by on
    Based in CO3 8DA, Stanway
    Extension Builder covering Harwich
    Member since Nov 2018
    ID Checked

    F&J CONSTRUCTION is a family business with over 50 years experience in the building trade. Onboard our team we have fully qualified brick layers ,carpenters, roofers , electricians, plumbers and landscapers . We cover all aspects of building ,no ma...

    Based in CO4 6EJ, Colchester
    Extension Builder covering Harwich
    Member since Mar 2017
    ID Checked

    All brickwork repairs,garden walls damaged or cracked brickwork.New openings in external brickwork ie.new or extended opening for bi-fold patio doors.Also closing existing openings,windows doors etc. I am also looking for new build work garden walls...

    Based in CO12 3HF, Harwich
    Extension Builder covering Harwich
    Member since Jan 2026

    Hi my name is benny! I specialise in bricklaying. I take pride in all the work I do.

    Based in CO12 3BA, Harwich
    Extension Builder covering Harwich
    Member since Jan 2026
    ID Checked

    Bricklayer of 6 years on sub structure and super structure i have experience on traditional builds and timber frame garden walls and garages detailed brickwork

    Based in CO12 3RG, Harwich
    Extension Builder covering Harwich
    Member since Nov 2025
    ID Checked

    I am fully qualified in building / bricklaying / fencing / slabbing / cementing. I take pride in all thr work i undertake.

    Based in CO12 4AL, Harwich
    Extension Builder covering Harwich
    Member since Jan 2026
    ID Checked

    ? Main Responsibilities Construction Work Building houses, extensions, walls, and other structures. Reading and following architectural plans or blueprints. Measuring, cutting, and assembling building materials like wood, brick, or concrete. Site Pre...

    Based in CO12 5JF, Little Oakley
    Extension Builder covering Harwich
    Member since Jan 2026
    ID Checked

    We are builders and carpenters specialising in property alteration, fitting out, remodeling, extensions and all things associated with structural alterations. All our work and labour force are fully insured. We are a small personal business but have...

    Based in CO7 0JA, Brightlingsea
    Extension Builder covering Harwich
    Member since Jan 2019
    ID Checked

    Gray’s Construction – Building with Pride Across Colchester and Beyond At Gray’s Construction, we’re a small, dedicated building firm based in Colchester, offering a full range of services — from minor internal repairs to large-scale outdoor project...

    Latest Kitchen Installation Review

    "Top man had a few problems but quickly resolved"

    Reviewed by on
    Based in CO7 7FF, Elmstead
    Extension Builder covering Harwich
    Member since Jul 2025
    Public liability insurance
    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 Colchester

    Single story extention of kitchen Two walls will require RSJs to open up kitchen dinning area 4x4meters 16sq approximately

    Job posted in Leiston

    single storey extension to the side of the house to extend the living room and add a downstairs toilet

    Job posted in Ipswich

    Rear extension over two storeys consisting of Lounge and Dining Room downstairs and two double bedrooms, both with en suite upstairs which will be adj...

    Job posted in Manningtree

    Rear and side extension on traditional cottage. Looking for guide price and a builder to collaborate with for this simple build.

    Job posted in Colchester

    To make annex on side of property to include bedroom and lounge possibly kitchen and wet room

    Job posted in Colchester

    Single story extention of kitchen Two walls will require RSJs to open up kitchen dinning area 4x4meters 16sq approximately

    Job posted in Leiston

    single storey extension to the side of the house to extend the living room and add a downstairs toilet

    Job posted in Ipswich

    Rear extension over two storeys consisting of Lounge and Dining Room downstairs and two double bedrooms, both with en suite upstairs which will be adj...

    Job posted in Manningtree

    Rear and side extension on traditional cottage. Looking for guide price and a builder to collaborate with for this simple build.

    Job posted in Colchester

    To make annex on side of property to include bedroom and lounge possibly kitchen and wet room

    Job posted in Ipswich

    Outdoor Pergola with perspex roof

    Job posted in Ipswich

    Single story extension on the back of house, including utility space and downstairs toilet. Looking for advice on what is possible with the plan to id...

    Job posted in Woodbridge

    Build single storey extension with loft room to bungalow

    Job posted in Ipswich

    Babergh planning ref DC/20/00398. Looking to reinstate the application and get a quote for the work, including all materials. Thanks.

    Job posted in Colchester

    Side and rear extension square meter age of roughly 60 square meters

    Job posted in Ipswich

    Outdoor Pergola with perspex roof

    Job posted in Ipswich

    Single story extension on the back of house, including utility space and downstairs toilet. Looking for advice on what is possible with the plan to id...

    Job posted in Woodbridge

    Build single storey extension with loft room to bungalow

    Job posted in Ipswich

    Babergh planning ref DC/20/00398. Looking to reinstate the application and get a quote for the work, including all materials. Thanks.

    Job posted in Colchester

    Side and rear extension square meter age of roughly 60 square meters

    Job posted in Ipswich

    Build on top of rear extension to make second storey

    Job posted in Ipswich

    Already have a porch what to build up for a en suit upstairs

    Job posted in Colchester

    Single story extension for study off living room

    Job posted in Sudbury

    Looking for build costs , probably to waterproof shell level, 5.8m across back of house, starting 3m high then tiled pitch roof down to 2.2m High over...

    Job posted in Witham

    Double storey extension, kitchen extended and a dining room created on the ground floor, 1 additional bedroom and 1 existing bedroom being extended ou...

    Job posted in Ipswich

    Build on top of rear extension to make second storey

    Job posted in Ipswich

    Already have a porch what to build up for a en suit upstairs

    Job posted in Colchester

    Single story extension for study off living room

    Job posted in Sudbury

    Looking for build costs , probably to waterproof shell level, 5.8m across back of house, starting 3m high then tiled pitch roof down to 2.2m High over...

    Job posted in Witham

    Double storey extension, kitchen extended and a dining room created on the ground floor, 1 additional bedroom and 1 existing bedroom being extended ou...

    Job posted in Bury Saint Edmunds

    Kitchen extension extend kitchen.

    Job posted in Braintree

    Rear extension to make a dining and utility area

    Job posted in Hockley

    Looking to install an extra dwelling upstairs to give us more space and add an extra room and bathroom. ground floor, walls to be removed to have an o...

    Job posted in NORWICH

    Building bedroom extension on top of single storey kitchen. No additional footprint

    Job posted in Haverhill

    Build a new bathroom where currently is a loft storage next to main bedroom. Contact for plant

    Job posted in Bury Saint Edmunds

    Kitchen extension extend kitchen.

    Job posted in Braintree

    Rear extension to make a dining and utility area

    Job posted in Hockley

    Looking to install an extra dwelling upstairs to give us more space and add an extra room and bathroom. ground floor, walls to be removed to have an o...

    Job posted in NORWICH

    Building bedroom extension on top of single storey kitchen. No additional footprint

    Job posted in Haverhill

    Build a new bathroom where currently is a loft storage next to main bedroom. Contact for plant

    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