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Home Extensions in Hertfordshire

At STW Plastering & Building, we specialise in creating stunning & functional home extensions across Hertfordshire. Whether you’re looking to expand your living space, add value to your property, or create your dream home, our expert team is here to bring your vision to life.

10+ Years in Business, with 20+ Years of Experience

10+ Yrs in Business | 20+ Yrs of Experience

Home Extension Services

Home extensions are a fantastic way to increase the size and functionality of your home without the need to relocate. At STW Plastering & Building, we provide a comprehensive home extension service, managing every aspect of the project from initial consultation through to final completion.

Single-Storey Extensions

Single-storey extensions are a popular choice for homeowners looking to create additional space on the ground floor. They’re ideal for expanding kitchens, adding new dining areas, or creating open-plan living spaces.

Key benefits of single-storey extensions include seamless integration with your existing home, enhanced natural light, and increased property value.

Our team ensures that your single-storey extension is designed to maximise space and light while maintaining the character of your property.

Double-Storey Extensions

Double-storey extensions provide a significant increase in living space, making them ideal for growing families or homeowners who need extra bedrooms, bathrooms, or office space.

Benefits include maximising your property’s footprint without sacrificing outdoor space, adding substantial value to your home, and flexible design options to suit your needs.

Rear Extensions

Rear extensions are perfect for creating larger kitchen spaces, open-plan family rooms, or additional living areas that flow seamlessly into your garden.

Advantages of rear extensions include a stronger connection between indoor and outdoor spaces, the opportunity to create modern, open-plan layouts, and customisable designs to suit your lifestyle.

Whether you prefer a classic design or a contemporary look, we’ll help you create a space that suits your home and your vision.

Wraparound Extensions

Wraparound extensions combine rear and side extensions to create a large, versatile space that completely transforms your home. Features of wraparound extensions include: maximum flexibility in design and layout, significant increases in both living and storage space, and the potential to redefine how you use your home.

This type of extension is perfect for homeowners looking to completely open up their ground floor and create a functional space tailored to their lifestyle.

Garage Extensions

Looking to convert your unused garage into functional living space?

Let us expand your garage or convert it into additional living space, such as a home gym, studio, or guest suite, adding value and functionality to your home without requiring major structural changes.

Garage conversions are one of the quickest, most affordable, and hassle-free to increase your home's usable living space. Fill our form or call us directly to begin your free quotation to see if a garage extension would work for you.

Our Services

Plastering

From skimming to repairs, we create flawless finishes for Hertfordshire homes.

Rendering

Protect and enhance your property with our expert rendering solutions.

Extensions

Expand your home with professionally designed & constructed extensions.

Building

From renovations to new builds, our team brings your vision to life.

Why Choose Us?

In addition to our commitment towards excellent quality, our advantages include:

20+ Years of Experience

Fully Qualified Plasterer & Builder

Serving Hertfordshire & Nearby Areas

Fully Licensed & Insured

Free Quotes

Competitive Pricing

A Wide Range of Services Offered

Always a Friendly Service

Strong Work Ethic

About Us

STW Plastering & Building Services have been providing a wide range of plastering services to a high standard and at competitive prices for almost 20 years, to both domestic and commercial clients.

We pride ourselves on our professional and friendly service, reliability and skilled workmanship ensuring our satisfied customers return again and again.

Find Us in Hertfordshire

Proudly serving Hertfordshire and the surrounding areas, STW Plastering and Building is your trusted local partner for home extensions. Our local team is just a call away, ready to transform your property with professional workmanship, personalised services, and outstanding results.

Conveniently located in the centre of Hertfordshire, we’re easy to reach for quotations and projects of all sizes.

FAQ's

Do I need planning permission for a home extension?

In many cases, home extensions fall under permitted development rights, meaning planning permission isn’t required. However, this depends on the size, location, and specific details of your project. We’ll guide you through the planning process to ensure compliance with all regulations, simply get in touch.

How long does a home extension project take?

The timeline varies depending on the size and complexity of the extension. Smaller projects, like single-storey extensions, can take 1–3 months, while larger, multi-storey additions may require 4–9 months. We’ll provide a detailed schedule during your initial quotation.


The timeline for your project depends on its size and complexity. Smaller tasks like plaster repairs can often be completed in a day or two, while larger projects, such as a full house worth of plastering work, may take several weeks. We provide a detailed timeline during our initial consultation which can easily be arranged by calling or filling our form to get your free quote.

Can you match the extension to my existing property?

Yes, we take great care to ensure that your extension blends seamlessly with your existing home. From matching brickwork to replicating architectural details, we’ll create a harmonious and cohesive design.

Will I need to move out during construction?

In most cases, you can remain in your home during construction. We take steps to minimise disruption, such as isolating work areas and maintaining crystal clear communication throughout the project.

Are your services insured?

Yes, all of our work is fully insured, ensuring your peace of mind.

Do you serve areas outside of Hertfordshire?

We serve all nearby areas in and around Hertfordshire, with some jobs stretching to Bedfordshire. If you want to check if we cover your location, please contact us.

Can you manage my entire project from start to finish?

Yes, we provide end-to-end project management, ensuring seamless coordination from initial consultation through to project completion. This includes handling materials, scheduling, and ensuring all work is completed to the highest standards.

What Our Customers Say About Us

Plastering & building company in Stevenage

JeanB-315

"Simon has done some great work for us over the last two days. He is punctual, hard-working, able to do a wide variety of work, and is personable, friendly and accommodating with slight changes. He gave a precise description of what the work would entail, and carried it out very well. We are very pleased with his workmanship, style and reliability. He has carried out similar work for our daughter, who was equally pleased and recommended him to us. We would have no hesitation in recommending him to others."

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STW Plastering & Building Services | Copyright 2025 © All Rights Reserved | Designed & powered by Grafty