Home Extension Builders in Upminster
Expert extension specialists serving Upminster and the RM14 area, delivering full extension design, build, and finish with Buildaway.
Your Local Home Extension
Specialists in Upminster
Extension builders covering Upminster and the surrounding RM14 streets: Buildaway works around Upminster Tithe Barn, Upminster Windmill and the roads off St Mary's Lane.
Buildaway treats Upminster extensions as a sequence: survey, drainage and consent, then structure, then finishes. Party wall notice is required on any semi-detached property here, and the notice periods are handled as part of the contract rather than left to you. Buildaway handles extension projects throughout RM14, from Corbets Tey and Station Road to the homes closest to Hall Lane.
Homeowners across Upminster choose Buildaway for extensions that add lasting value. Our workmanship, clear pricing, and coordinated project management mean a RM14 extension delivered on programme and finished to a standard that stands up to scrutiny.
Our Home Extension Packages in Upminster
Single-Storey Rear Extension
Ideal for expanding your living space. Includes structural survey, architectural drawings, groundworks and foundations, brickwork and roofing, bi-fold or sliding doors, heating installation, building regulation approval.
Side Return Extension (Most Popular)
Complete kitchen and living area transformation. Includes structural assessment, full groundworks, steelwork if required, brickwork and matching materials, glazing and doors, full insulation, electrics upgrade, flooring, building regulation approval, waste removal.
Double-Storey Extension
For those seeking maximum space addition. Includes architectural design, full structural alterations, steelwork and foundations, bespoke staircase, multiple room creation, bathroom or en-suite option, planning and building regulation handling.
Why Upminster Homeowners Choose Buildaway
Local teams trusted across Upminster, Cranham, Hornchurch, and Essex commuter towns
Based in your area with local expertise and reputation.
Bespoke extension designs for detached homes, modern developments, and family properties
We handle everything so you don't have to worry.
Transparent and honest pricing with no hidden fees or unexpected charges.
Clear upfront pricing with no surprises along the way.
Full project management for a seamless, stress-free experience
Meticulous craftsmanship in every aspect of your extension.
Completed projects near Upminster Station, Cranham Green, and RM14 postcodes
Professional consultation and detailed quotes at no cost.
What's Included in Your Home Extensions Services
Everything you need for a seamless, stress-free home extension - from structure to finish.
Full groundworks and structural build
Complete groundwork preparation and structural construction services.
Plumbing, electrics, and heating integration
Professional installation of all mechanical and electrical systems.
Roofing, windows, and external finish
Complete roofing, window installation and exterior finishing.
Plastering, flooring, and decorating
Professional plastering, flooring and decorating services.
Interior fit-out and finishing
Complete interior fit-out and professional finishing touches.
Project management and schedule control
Professional project management and timeline control throughout.
What Our Clients Say
Real reviews from our satisfied customers.
“We had an excellent experience working with Buildaway. Cormac was incredibly easy to work with, and gave helpful advice. The finished job was neat, professional and completed efficiently. We'd definitely recommend and would use them again!”
Roisin Lawrence
Verified Google review
“In half an hour he was at the door ... he listened and then checked, measured and said to me it is doable. Cormac is very good with communication, listening, advising, a hard worker and an excellent team leader. I am extremely impressed, happy and proud of what his team delivered.”
Betty Lwanga
Verified Google review
“Cormac & his team were brilliant throughout our bathroom renovation project. From scoping to completion, Cormac was always very responsive ... His team worked extremely hard and a big shoutout to Greg for his attention to detail! We couldn't be happier with the results.”
Georgina Ehmcke
Verified Google review
“From start to finish the experience was smooth and well organised. Cormac was easy to deal with, communication was clear and everything ran to the agreed timelines ... The quality of the finish is excellent. The bathroom looks fantastic and the bedrooms feel completely refreshed.”
Helen Sivyer
Verified Google review
“We've had a genuinely fantastic experience with Buildaway. Cormac was ultra responsive and excellent at communicating with us throughout our project. The quality of the work was excellent ... Friendly, reliable and also competitive.”
Kiran Collier
Verified Google review
“From my first contact with Cormac, I was in good hands. His team turned my vision into reality, communicating with me every step of the way and offered helpful suggestions which turned my bathroom into an oasis. I could not be happier and would highly recommend their services.”
Jackie Brown
Verified Google review
Frequently Asked Questions
Your questions about home extensions in Upminster, answered.
What is a build-over agreement and will I need one?
If the extension crosses a public sewer you need written consent from the water authority before building over it. It is common in Upminster because of how rear drainage runs. The application takes several weeks, so Buildaway starts it at design stage rather than letting it delay the build.
Will an extension affect my neighbour?
On any semi-detached or terraced Upminster property the Party Wall Act applies and notice must be served. Buildaway handles the notices and statutory periods, and factors them into the start date rather than discovering them mid-project.
Can I stay in the house during the build?
Usually yes for a single-storey rear extension, since the existing structure stays sealed until late in the programme. Buildaway phases the Upminster work so the opening-up happens over the shortest practical period.
How long does a rear extension take to build?
A single-storey rear extension is generally ten to fourteen weeks on site once foundations start, depending on glazing lead times. Double-storey work runs longer. Buildaway separates the design and consent period from the build period on the programme so expectations are realistic.
Can you extend within Upminster Conservation Area?
Sometimes, but the tests are stricter and additions are assessed against the original dwelling rather than its current size. Buildaway will tell you honestly at survey stage whether a scheme is likely to succeed before you spend money on drawings.
Get Your Free Quote
Tell us about your project and we'll get back to you within 24 hours.
We Serve Upminster and Surrounding Areas
Based locally and working across Upminster and the neighbouring RM14 streets every week.
Nearby Areas We Serve
Below are some of the local areas where you can find Buildaway transforming homes.
Ready to Transform Your Extension in Upminster?
Buildaway combines expert craftsmanship with stylish design - enhancing property value across Upminster and Essex’s prestigious commuter belt.