Builders
Carpenters
Electricians
Flooring Specialists
Gardeners
Handymen
Heating Engineers
Painters & Decorators
Plasterers & Renderers
Plumbers
Roofers
Tilers
my
How it works
Ask a trade
Cost guides
Categories
Find an Extension Builder in South Harefield
Find a local extension builder near you. We have 8,323 trusted and reviewed extension builders in South Harefield to choose from, based on 3,775 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 South Harefield will then be in touch to quote for the work.
CHOOSE YOUR EXTENSION BUILDER
Compare quotes then choose your preferred South Harefield Extension Builder.
Extension Builders in South Harefield
Filter by:
- Within 60 minutes
- Within 45 minutes
- Within 30 minutes
- Within 20 minutes
- Within 10 minutes
- Any rating
- 5 star rating
- 4 star rating
- 3 star rating
Sort by:
- Recommended
- Closest
- Most reviews
- Highest rating
Best work guarantee take pride in all work weather big or small we offer too work with clients too find best way forward
Latest General Maintenance Review
"Terry is a really good guy and really good to work with. Him and his team are very friendly, knowledgeable and efficient. Wouldn’t hesitate in recommending Terry and the team to anyone with an upcoming project"
Reviewed by Andreas on 31st Aug 2026Based in HA4 7AA,
Ruislip
Extension Builder covering South Harefield
Member since Jun 2025
ID Checked
BuildCraft innovation is a reliable, London-based building company specialising in renovations, new builds, porches, extensions, loft conversions, plumbing, electrical work, luxury bathrooms, outbuildings, garden & landscaping, and driveways etc. W...
Latest Extension Review
"He has been excellent; his honesty and reasonableness have been apparent since our initial interaction. When he provided the estimate, his approach was notably distinct from that of other contractors.He was very detailed and thoro..."
Reviewed by Sanjeev on 8th Sep 2026Based in UB4 0HZ,
Hayes
Extension Builder covering South Harefield
Member since Oct 2023
Public liability insurance
We are a family business working from small to big projects loft, extension, garden all work from A to Z established in 2019 and all ours employees are having over 20 years experience Let's Work Together!
Latest Garage Conversion Review
"Flexible, hard working, good communication and first class finish"
Reviewed by Tony on 15th Aug 2026Based in HA5 2QH,
Pinner
Extension Builder covering South Harefield
Member since Jan 2026
ID Checked
Homes Construction & Renovations Design. Build. Transform. www.homeconstructionrenovations.com Since 2020, Delivering exceptional craftsmanship & innovative solutions across London and surrounding areas up to 50 miles. We specialise in loft convers...
Latest Builder Review
"We recently had our property refurbished by Home Constructions and Renovation, and we couldn’t be happier with the results. From start to finish, the team was professional, reliable, and highly skilled. Their attention to detail a..."
Reviewed by Zolo Solo on 30th Jul 2026Based in UB7 0HR,
Sipson
Extension Builder covering South Harefield
Member since Feb 2026
ID Checked
M&A Sakhi construction Ltd provides an array of top-quality home improvement services, including professional loft , extension, garage, driveway , painting and decorating, tiling, flooring, bathroom, kitchen and complete home refurbishments. We h...
Latest Loft Conversion Review
"I recently had the pleasure working with M&A Sakhi Construction. Upon the initial enquiry to completion, Narinder Bhaji and the whole team have been great. Hardworking and professional. I had various jobs done on my house, brickwo..."
Reviewed by Mohammed on 24th Jul 2026Based in UB3 4AD,
Hayes
Extension Builder covering South Harefield
Member since Jan 2024
Public liability insurance
With over seven years of experience in the construction industry, We are a Hayes-based company delivering high-quality building services. Our highly qualified team is committed to excellence, ensuring superior workmanship on every project. We spe...
Latest Builder Review
"⭐⭐⭐⭐⭐ Outstanding from start to finish. Finding a builder you can genuinely trust isn’t easy, but these guys exceeded all expectations. The level of professionalism, knowledge, and attention to detail was evident from d..."
Reviewed by Pritesh Pattani on 24th Jun 2026Based in UB4 8DA,
Hayes
Extension Builder covering South Harefield
Member since Feb 2026
ID Checked
Hi … am honest builder…. With work,s…………………………………?
Latest General Brick Laying Review
"Before starting my full house renovation which included a 28 sq meter rear extension, garage conversion and a Dormer Loft conversion, i was very cautious and scared after hearing all the stories about builders running away with mo..."
Reviewed by Moazam on 14th Jun 2026Based in UB3 2JN,
Hayes
Extension Builder covering South Harefield
Member since Oct 2024
ID Checked
We are a family run building company and been running for over 50 years we pride are shelves on top Quality work and customer satisfaction have a 5 star rating on which
Based in UB9 6JS,
Harefield
Extension Builder covering South Harefield
Member since Oct 2024
Reliable honest trader can be found on which trusted traders, looking for handy man work , from screwing curtain rails, tiling, mending fences, plumbing in washing machines, assembly of flat pack furniture and anything else that you can’t do. Full pu...
Based in UB9 6AY,
Harefield
Extension Builder covering South Harefield
Member since Jan 2023
I’ve been a professional bricklayer for nearly 25 years with experience in new builds ,extention,alterations and restoration work , All aspects of brickwork
Based in UB9 5JD,
Denham
Extension Builder covering South Harefield
Member since Jul 2024
ID Checked
Hi welcome to KR BUILDER LTD, undertaking all kind of building projects, interior and exterior, built and maintenance
Based in UB9 6EY,
Harefield
Extension Builder covering South Harefield
Member since Apr 2025
Public liability insurance
Hi we are working last 5 years in London area doing construction and building work professionally ,We got public liability insurance cover.we do all general building works full bathroom renovations,Plastering ,painting decorating and extraction.
Latest Wall Tiling Review
"I’m very pleased with the work Manjit and his colleague did tiling my kitchen floor. They both worked extremely hard and did an excellent job. I was particularly impressed by their attention to detail and the care they took with..."
Reviewed by Isabelle on 7th Sep 2026Based in UB4 0SE,
Hayes
Extension Builder covering South Harefield
Member since Aug 2026
Public liability insurance
vast experience in refurbishents we have access to a wide range in our team including structural engineer and surveyors Kitchen/ bathroom service available Please note surveys chargeable Detailed quotations / estimates also
Latest General Brick Laying Review
"Very fast and efficient"
Reviewed by Bruce on 6th Sep 2026Based in W4 5DA,
London
Extension Builder covering South Harefield
Member since Aug 2021
Public liability insurance
Affixx ltd is construction company currently building 4 bedroom house in High Wycombe.and I have great deals on materials from my supplier. So do project on very competitively.
Latest Brick / Block Paving Review
"Responded to my request very quickly and came to provide a quote the next day. Work has started"
Reviewed by Gill on 8th Aug 2026Based in UB8 2NJ,
Uxbridge
Extension Builder covering South Harefield
Member since Jan 2022
ID Checked
Established over 20 years ago, we cover all areas of building work, including new builds, extensions, conversions, refurbishments and renovations. We can also help you get the most out of your home by upgrading your space to the latest bathroom or ki...
Latest Bathroom, Kitchen and WC Plumbing Review
"Vito has been brilliant from start to finish. He was the only company who actually came out, measured properly, and gave us a quotation that was clear, detailed, and completely reasonable. He and his crew arrived on time every si..."
Reviewed by Sue on 5th Aug 2026Based in AL3 6HR,
St Albans
Extension Builder covering South Harefield
Member since Nov 2023
ID Checked
Pwa roofing Tile roofing Slate roofing Lead work Flat roof Edpm rubber Flexitex, Veluxs windows installation and replacement PWA roofing has been gong for around 18 years now we do all aspects of roofing and work comes with all guarantees
Latest Garage Conversion Review
"Paul and Charlie were brilliant, stepping in to sort my garage repair that had gone wrong. They fitted the job in at short notice, and worked to a high standard for a great price. Strongly recommended."
Reviewed by Sam on 28th Jul 2026Based in SL4 3QB,
Windsor
Extension Builder covering South Harefield
Member since Oct 2022
Public liability insurance
special team we carry out interior and exterior design at the lowest prices. tiles, plaster, multi, finish, repair, paint, interior and exterior painting, fit terraces, deking gardens, first plumbing, second plumbing, complete bathrooms and kitche...
Latest Internal Renovation / Reconfiguration Review
"Marco and his team did a brilliant job renovating our one-bedroom flat. They worked at an impressive pace while ensuring every aspect of the project was completed to a very high standard. Their attention to detail and quality of w..."
Reviewed by Mubeen on 19th Jul 2026Based in SL3 8RS,
Slough
Extension Builder covering South Harefield
Member since Apr 2025
ID Checked
Houseline Construction Ltd is a trusted design and build contractor specialising in high-quality residential construction throughout Surrey, Berkshire, Buckinghamshire, West London and the surrounding areas. We deliver a complete turnkey constructio...
Latest Builder Review
"We chose Houseline Construction for our double-storey extension, and it was the best decision. Excellent communication, skilled workmanship, and a very smooth building process."
Reviewed by MARVI on 8th Jul 2026Based in SL5 7ET,
Ascot
Extension Builder covering South Harefield
Member since Jun 2016
Public liability insurance
At Renovex, we specialise in high-quality home improvements and construction services, helping homeowners transform and maximise their living spaces. From extensions and renovations to loft and garage conversions, bathrooms, bespoke staircases, and d...
Latest Bathroom Installation Review
"Absolutely amazing. Builders quality excellent communication brilliant"
Reviewed by Nina on 6th Jul 2026Based in UB3 3HJ,
Hayes
Extension Builder covering South Harefield
Member since Jun 2026
ID Checked
Established builder for over 30 years extensions new builds and renovations delivering value for money and completing on time and on budget to an excellent standard
Latest General Maintenance Review
"JPD Build and Design presents themselves as an efficient and professional company. The quote was very reasonable but sadly too good to be true. The original time frame was 3 weeks but after 9 weeks of excuses, poor communica..."
Reviewed by Lara on 1st Jul 2026Based in AL3 4LZ,
St Albans
Extension Builder covering South Harefield
Member since Jun 2026
ID Checked
TOWNS NEAR SOUTH HAREFIELD
- Extension Builders in Baker's Wood
- Extension Builders in Maple Cross
- Extension Builders in Gerrards Cross
- Extension Builders in Rickmansworth
- Extension Builders in Iver Heath
- Extension Builders in Chalfont St Giles
- Extension Builders in Chorleywood
- Extension Builders in Stoke Poges
- Extension Builders in Seer Green
- Extension Builders in Richings Park
- Extension Builders in Watford
- Extension Builders in Bushey
- Extension Builders in Beaconsfield
- Extension Builders in Slough
- Extension Builders in Poyle
- Extension Builders in Amersham
- Extension Builders in Datchet
- Extension Builders in Elstree
- Extension Builders in Eton
- Extension Builders in Eton Wick
Other trades
- Bathroom Specialists
- Bricklayers
- Builders
- Carpet Layers
- Chimney Builders
- Cleaners
- Door Fitters
- Driveway Specialists
- Electricians
- Extension Builders
- Fascias Specialists
- Flat Pack Assemblers
- Flat Roofers
- Flooring Specialists
- Garage Convertors
- Garden Clearance Specialists
- Garden Maintainers
- Garden Shed Builders
- Gardeners
- Gas Boiler Engineers
- Gas Fire Engineers
- Gas Oven & Hob Engineers
- Guttering Specialists
- Handymen
- Hard Landscapers
- Heating Engineers
- Internal Renovators
- Joiners
- Kitchen Fitters
- Laminate Flooring Specialists
- Lawn Turfers
- Locksmiths
- Loft Specialists
- Outbuilding Construction Specialists
- Painters & Decorators
- Pebble Dashers
- Plasterers
- Plumbers
- Porch Builders
- Radiator Engineers
- Roofers
- Shower Specialists
- Staircase Specialists
- Tarmac Driveway Contractors
- Tilers
- Tree Surgeons
- Underpinning Specialists
- Window Specialists
- Wooden Decking Installers
- Wooden Fence Specialists
See more trades
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
- Extension Builders in Abridge
- Extension Builders in Addlestone
- Extension Builders in Aldershot
- Extension Builders in Arborfield Garrison
- Extension Builders in Ashford
- Extension Builders in Ashtead
- Extension Builders in Aston Clinton
- Extension Builders in Aylesbury
- Extension Builders in Badshot Lea
- Extension Builders in Banstead
- Extension Builders in Barton-le-Clay
- Extension Builders in Benson
- Extension Builders in Berkhamsted
- Extension Builders in Blackwater
- Extension Builders in Borehamwood
Recently posted Extension Builders jobs
Join over 1,000,000 happy homeowners who have posted their job on MyJobQuote.
Are you a trade? Become a member and get access to local jobs today!
See demand near you
Recent Extension Builder Articles
Over 1 million homeowners and over 50,000 tradespeople
use MyJobQuote nationwide each year