House Extensions Brentwood

Here at Seemore Glass, we offer a wide range of beautiful house extensions, ready to expand your Brentwood home. Each is bespoke designed and tailored to your design preferences. It doesn’t matter whether your home is traditional, new build, contemporary or a beautiful period property. We will have the extension options perfect for you and your property.

We get our conservatory and orangery extensions from Ultraframe. Being market leaders in the double glazing industry, Ultraframe is known for its high-quality products. That means that when choosing us, you know you’re only going to get the very best.

  • Build stunning and spacious rooms for your home.
  • Thermal efficiency comes as standard with our double glazing. Our extensions are guaranteed to keep your home warm during the winter and cold during the summer. Your new room will be able to be used all year round.
  • With our house extensions, you can extend your kitchen, give your children a new playroom, create a study for you to be able to work from home or merely host guests in a relaxing space.

Find out more information by getting in touch with Seemore Glass today. You can arrange an appointment to visit our showroom or get an extension quote tailored to you.

Key Features

Thermally Efficient

Our house extensions can be used all year round. They will not be too hot to use in the summer, and they will not be too cold also use in the winter. These installations are incredibly thermally efficient keeping you and your family cosy and warm.

Professional Installation

Being a family run business with over 50 years of experience gives us an understanding of home life. We know that you want to be able to enjoy our house extensions as quickly as possible, so we offer an efficient service that will benefit you.

Low Maintenance

Having to look after a house extension if they’re not made from suitable materials can be difficult. We guarantee that our installations are extremely low maintenance. Unlike timber installations, you will not have to worry about our extensions warping, bending, twisting, cracking, discolouring or even rotting. 

Versatile Home Extensions

If you’re looking to build extra space for your home, considering one of our house extensions is a great place to start. You can use it as a playroom, a new study, a living room, a kitchen extension or any other purpose you would like. The choice is yours.


We want to ensure that all our house extensions are incredibly safe and secure for your Brentwood property. With each installation, we can guarantee that you are fully protected by strong double glazing that will keep out potential intruders.

Conservatory, Orangery and More

We have a wide range of extension options for you to choose from so that you can get the bespoke designs you’re after. These installations are guaranteed to suit any property of any age. Get in touch today for more details.


Ultraframe Conservatories Brochure

House Extensions Prices Brentwood

For more information about installing a house extension in your Brentwood home, please fill out our online contact form. We will do our very best at getting back to you as soon as possible with all the answers you need.

You can also get a quote instantly by using our online cost calculator.

Double Glazing Quote

Send Us a Message

house extensions essex

Browse Our Gallery

Industry Leading Accreditations

Visit Our Showroom

Get an Instant Quote Price Today

Start A Quote

Contact Us

Book An Appointment

Start A Quote Get In Touch
X Design Your Palladio Door