House Extensions - Bluemanor Windows

House Extensions Brentwood

Get high performance house extensions as part of your Brentwood home. Our range of house extensions is competitively priced in Brentwood.

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Book your Free & No Obligation Quotation with one of our expert team today, alternatively book a visit to our beautiful showroom to discuss your project and see our products in further detail.

House Extensions Brentwood Bluemanor Windows

House Extensions Brentwood

If you are looking for the ultimate way to not only expand the space in your home, but add value to your property, look no further than a house extension. It is a lifelong investment in the future of your home and will create a year round, cosy space that will give you the extra room you have always dreamed of.

There are several reasons why homeowners throughout Brentwood continue to add house extensions to their homes. Not only do they deliver a whole host of performance benefits, but our double glazed designs will fill your space with natural light and allow you to enjoy the best of both being inside and enjoy a bright space. One of the benefits house extensions have over conservatories is that they deliver the maximum amount of thermal performance as well as added privacy with larger brick built areas.

If you are looking to add a house extension to your Brentwood home, you have come to the right place. Here at Bluemanor, we have been enhancing homes in Brentwood and throughout Essex for many years. From your initial quote through to your installation, Bluemanor are here to help every step of the way, meaning that you never need to worry about a thing.

Key Features & Benefits

ultraframe lean to conservatory installers essex

Approved Ultra Installer

It can be challenging for homeowners to find a local and trusted installer, which is why Ultraframe only recommends the best installation companies to install their products. All Ultra Installers undergo regular assessments that ensures we provide a high standard of service to our customers and raise industry standards.

energy efficient glazing

Excellent Energy Efficiency

We understand how important it is that your home is as energy efficient as possible. At Bluemanor, our house extensions are constructed with the most advanced materials and double glazing technology, which ensure excellent performance.

made in britain

Made in Britain

We are proud to support UK manufacturers, with all of our products being proudly produced in Britain. Ourhouse extesnions are of the highest quality.

Yale

Unbeatable Security

Yale’s high security multipoint shootbolt locking mechanisms come as standard with Bluemanor Windows. You can rest assured knowing that your house extension is incredibly secure.

Visualise Your
Dream Conservatory

We bring you three stunning ranges of Ultraframe house extensions. Each of these ranges has their own look and advantages, giving you a better selection to choose from. Whichever style you choose, it will be designed in accordance with your local building regulations.

We also offer glazing options, including coloured glass, that can restrict the amount of solar heat coming in on hot days. However, it can also prevent heat inside the room from escaping out. Additionally, our extensions come with the choice of an Ultraroof tiled conservatory roof system. You can even select from the double hipped roof with box gutter, hipped lean-to, Georgian, and lean-to roof styles.

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house extension for comfortable living

Fantastic Insulation & Robust Security

House extensions offer great insulation, being one of the main reasons that homeowners will usually choose a house extension over a conservatory or orangery. This means that not only will your new extension add style to your Brentwood home, it will also deliver unrivalled thermal performance, meaning your indoor space is warmer for longer, lessening the need to use your central heating. It retains warmth inside, making it the perfect year-round space.

Here at Bluemanor, we understand that the safety of your priority is one of your main priorities. Our house extensions are supplied to us from highly regarded manufacturers, meaning that they are constructed using resilient double glazing and high security locking mechanisms. Whatever configuration you choose, you can rest assured that our designs will keep your home safe.

house extension top view

Professional Installers

We are proud to be one of the most highly regarded double glazing companies in the Brentwood and Essex area. In fact, we receive 4.8/5 stars on Google. With a host of industry knowledge and experience, you can be certain an installation from Bluemanor is one you can trust.

We understand that not all homes in Brentwood are built equal. That is why our whole range of house extensions are easy to customise and tailor to your home. Whether you are looking for a little added space or a large scale expansion plan, we can help.

TESTIMONIALS

What Our Customers Say

Tricia Nicholls

We have recently had our front door replaced and are extremely pleased with the result and the excellent service we have received from Bluemanor Windows. From our initial consultation with Deo to the fitting of the door yesterday everything has been very efficient. We would definitely use the firm again and would highly recommend.

Nick Thompson

From the start to the finish of this project, Bluemanor have been fantastic. They have guided us through the process all the way. The workmanship building the conservatory has been very professional and impressive. The conservatory now looks out of this world. Thank you Bluemanor. We will recommend you to all our friends and family.

Emma Cleverdon

Incredible service, excellent customer care, and highly professional tradesmen. Would highly recommend.

Harry Callaghan

Great patio doors installation from Bluemanor. Deo was excellent in understanding what we needed quality product at a great price customer service was excellent.

Ben Ahmed

A fab experience with our cladding installation by Bluemanor Windows. Our fitters, Pete, Stevie & Josh were very polite & professional throughout as were the office team we had any dealings with over the phone. Would highly recommend using Bluemanor Windows for home improvements.

Nick Murr

Just had bay window, bi-folds, front door and all other windows fitted by Anthony, Austin and Aaron (triple A’s), the guys done a fabulous job from start to finish, polite, on-time and so professional and courteous to deal, thanks again for 5 star service!

Susan Hammond

When we decided to have our conservatory roof replaced we looked around & the quality & process of Bluemanor was not the cheapest but by far the best. We decided to have the windows & doors replaced as well & the whole process every trade was excellent friendly & arrived on time. The conservatory is more than we expected not hot not cold & looks amazing. Thank you Bluemanor Team.

Colin Jenkins

First class service. Quibble free replacement of misted glass pane towards the end of the 10 year guarantee on double glazed units purchased for the whole house. Able to match existing window design if so desired but can easily offer modern designs with appropriate advantages.

Chloe Hanson

Jake has been wonderful throughout, nothing is too much trouble and is very knowledgeable. We have ordered some windows and french doors – very competitive price with an excellent service to match.
We had the recommendation from my sister and brother in law and will certainly recommend you to others.
Thank you!

Tricia Laudrum

Myself and Martin , have been so impressed, by Bluemanor windows etc,…
From first meeting Rob , to everything being organised iin stages , and each person involved..
Friendly, professional, and very helpful.
We are so happy with our new addition.
Big thank you , to everyone..
We will be asking for your services again I feel sure .
Until then continued success

John Hoare

We have just had a new front door and 5 windows fitted by Bluemanor and it has been an excellent service
from start to finish. The day of installation went very smoothly and they left the area clean and tidy. We would highly recommend Bluemanor and the girls in the office do a excellent job keeping you updated.

Alice Williams

Recently had a conservatory built by Kevin and Sam aka ‘The Goats ‘. Fantastic service from start to finish. Arrived early and got straight onto work. Respectful of our property, clean and tidy workmanship, could not fault them. Informed us every step of the way.

Alison Smith

I am delighted with my new windows, and the customer service has been truly excellent from start to finish. Thanks to everyone in the company who has made the process so easy to navigate.

Pam Taylor

We had a lovely fitter come to replace our living room window and our back door. He was very thorough, professional and friendly. He cleaned up after he was finished, could not have asked for more.

Charles Muscat

Bluemanor Windows have always acted efficiently and supplied good quality materials at reasonable cost. I have no hesitation to use their services now and in the future.

Matt

Really good company the fitters did a really good job on installing a few doors and windows and even replaced a faulty front door pane on the new front door . Will be using them again for the next stage for the rest of the windows.

Richard Cronk

Great service from start to finish. Lots to look at in the showroom. No pressure to purchase. Guys arrived in time and left everything tidy. Really happy with our new windows and doors. Every member of staff were professional, friendly and polite. Would highly recommend this business.

Mary Clements

Bluemanor windows installed a new front door for us. We have been really pleased with the quality of the door and furniture and several people have commentated on how good it looks. It was installed as arranged and anybody involved from the salespeople to the wokmen were very polite friendly and helpful.
I fully recommend using Bluemanor Windows.

Keith Saunders

Had Bluemanor replace all our windows and doors recently and what a great job from start to finish Shannon in sales, the girls in the office and not forgetting the goats Kevin and Sam on the installation. I would highly recommend Bluemanor to anyone looking at getting there windows and doors replaced. The cladding team have got a lot to live upto later in the month.

Alison Arnopp

We recently bought a new front door from Bluemanor. Had a lovely call with the sales team, they explained all our options and didn’t push to upsell anything. They were very patient with us changing our quotes and options and the installation process was very smooth. We love the new door – it’s looks very stylish and are very excited to have a warmer house this winter!

Kevin Cottis

Bluemanor Windows have been excellent with their communications from day one. A slight delay with the door, but they telephoned to confirm this. Anthony and Austin the fitters were very professional and did a great job. We would highly recommend this company

June Butcher

Anthony and Austin fitted our new front door and glass side panel yesterday. We are so pleased with the work they have done. Polite and professional will recommend Bluemanor Windows friendly and helpful from start to finish.

Suzanne Knight

Austin and Anthony were very efficient and friendly. They did a great job installing our new door.

Elizabeth Kingseller

We had a new front door installed and were very impressed with the service and the door itself. Paul and Austin did a great job fitting it. Thank you.

Bev Rossi

Excellent service from Bluemanor from choosing, purchasing and installation. Paul and Austin were excellent today fitting our front door and side panels and obviously take pride in their work. So pleased with our new door and the service provided by Bluemanor.

Neil MacDonald

Very pleased with our replacement windows; they look lovely and feel well made. Great work by Anthony and Austin who were very polite & friendly , they installed them quickly and neatly & cleaned up after – even helped me remove the blinds before fitting. Overall an excellent job, many thanks.

Jenny Bowman

We have had a very positive experience with Bluemanor Windows, always very helpful and informative. We had Austin and Anthony who fitted our 2 front doors, 1 back door and a window for us today. They were very polite and professional and fitted our products to the highest standard. Thank you very much!

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Extension Prices in Brentwood

If you are ready to take the next steps in you home improvement journey, you may already be thinking about what the next steps are. If you are looking to find out a comprehensive price for your house extension project, why not try out our online quote tool? You will receive an instant price online, making it easy to get a quote tailored to your specifications.

We offer flexible finance on all of our products, making it easy to spread the cost of your house extension prices.

Alternatively, please feel free to contact a member of our team and we will be happy to answer any questions you may have. You can give us a call on  01376 322 266 or send us a message via our online contact form. Take the first steps in your extension journey now.

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Finance Options

Bluemanor Windows Ltd is an Introducer Appointed Representative (Financial Services Register No. 923514) of Phoenix Financial Consultants Limited (Phoenix). Phoenix is a credit broker, not a lender. Phoenix is authorised and regulated by the Financial Conduct Authority (FRN: 539195), and offers finance from its panel of lenders. All finance subject to status and credit checks.

Why Choose Bluemanor?

Finance Available

Our house extensions are available on finance, subject to application and acceptance. This is a fantastic option if you’d prefer to spread the cost of the renovations over several years.

Home Improvement Experts

You deserve a hassle free and enjoyable time renovating your Essex home. Here at Bluemanor, our personal service makes everything seamless. Our customer care comes highly recommended.

 

Local & Family Run

Have complete peace of mind by choosing Bluemanor. As a family run business, we have decades of expertise under our belts. We also only work with highly qualified in-house extension builders.

Ultraframe Quality

The roofs that we fit atop of these house extensions will always be Ultraframe. We firmly believe in only offering our homeowners the best, so work exclusively with the industry leaders.

Visit our Showroom

We have a stunning showroom in the heart of Braintree, here in Essex. You can visit us today and view a whole range of our bespoke products in person. We’re sure you’ll fall in love with one double glazing product or another. After all, we offer a full suite of windows, doors and conservatories, from the modern to the traditional.

You can also use your visit to discuss your projects with an in-house expert.

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House Extensions by Bluemanor Windows

Frequently Asked Questions

Are house extensions expensive?

Being a full brickwork extension of your property, they naturally come at a greater expense than a conservatory. However, it can still often be much more cost effective and less stressful than upsizing to a new property.

Better yet, we offer a range of finance terms, if you’d prefer to spread this cost. Contact us today to discuss this in further detail. Subject to application and acceptance.

House extensions won’t require a planning permission application providing they adhere to what makes a ‘permitted development’. We can advise of these, as well as building regulations, during our initial design meeting with you at our showroom in Braintree, Essex.

You are welcome to design an extension that goes beyond permitted development rules, but you’ll have to apply to local building authorities. You may also have to apply regardless of size or placement if you live in a conservation area.

They are! You won’t be making a compromise on your home security by extending its floorplan. Any external windows and doors will be fitted with multipoint locks as standard. This includes high quality systems from Yale.

We also only use the most robust materials from leading extruders, such as Liniar, Smart and The Residence Collection. Extend your home with Bluemanor and have peace of mind.

We are! Our expert team are registered Ultra Installers, so you’re in good hands when we build your house extension. We’re also backed by FENSA, the Which? Trusted Trader scheme and Buy With Confidence, to name but a few.

© 2026 Bluemanor Windows | Showroom Address: Chilford Court, Braintree, Essex, CM7 2QS | Registered in England and Wales | Registered Address: 1st Floor, 11 Freeport Office Village, Century Drive, Braintree, Essex, CM77 8YG | Company Number 06544892 | VAT Number 943080044 | Bluemanor Windows Ltd is an Introducer Appointed Representative (Financial Services Register No. 923514) of Phoenix Financial Consultants Limited (Phoenix). Phoenix is a credit broker, not a lender. Phoenix is authorised and regulated by the Financial Conduct Authority (FRN: 539195), and offers finance from its panel of lenders. All finance subject to status and credit checks.

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