skip to main content
Photos
Photos
Stories
Stories From Houzz
Houzz Discussions
Houzz Research
Advice
HOUZZ DISCUSSIONS
Sign In
Houzz Logo Print

House Extension Professionals in Southend-on-Sea, Essex

Expand your living space with a well-designed extension, custom built to meet your needs and preferences

Get Matched with Local Professionals

Answer questions about your project

Get connected with pros for free

Hire the right pro with confidence

Location (1)

Nearby Locations

Popular Locations

All Filters
Southend-on-Sea / 25 mi
Architects & Architectural Designers
House Extensions
1 – 15 of 234 professionals
1234567816
234 Professionals

Featured Reviews for House Extension Professionals in Southend-on-Sea, Essex

Design Spec
House Extension Professionals in Southend-on-Sea, Essex
Average rating: 5 out of 5 stars29 July 2026
“Working with design spec has been a pleasure. They offered much needed guidance at the early stages of the process. We needed ideas of what could and could not work for our roof extension. As we are looking to build a front dormer, the council will need to sign off our plans and during this processes Design Spec have been extremely informative and helpful, offering the professional expertise. I would highly recommend their services. Extremely responsive and polite.”
Anthro Architecture
House Extension Professionals in Southend-on-Sea, Essex
Average rating: 5 out of 5 stars23 July 2025
“We had the pleasure of working with John Crawley on the renovation and complete reimagining of our home layout in Forest Gate; East London, and the experience exceeded every expectation. From the outset, John showed a remarkable ability to truly listen. He paid close attention to what we needed as a family and translated those needs into a design that feels both functional and inspiring. His thoughtful approach ensured that every part of the space was tailored to how we actually live, not just how it might look on paper. One of the standout moments of the project was John’s ingenious solution for the whole house staircase—a challenging element that he handled with confidence and creativity. The result is not only a striking architectural feature but also a seamless integration into the overall flow of the home. What impressed us most is how naturally everything comes together. The layout feels intuitive, open, and connected, with each room transitioning beautifully into the next. It’s clear that John has an exceptional eye for spatial planning and detail. Throughout the process, John’s communication was excellent. He kept us informed, was always available to answer questions, and made us feel involved every step of the way. His professionalism and calm, collaborative style made the renovation experience far less stressful than we expected. We couldn’t be happier with the outcome and would absolutely recommend John Crawley to anyone looking for an architect who combines creativity with practicality and genuinely cares about delivering a space that works for you”
List your business here for free - Learn More
Architect or Architectural Designer FAQs
A house extension is a construction process that involves expanding the footprint of your existing home. This could be extending outwards, either to the side or rear of the house, or upwards by adding another storey. House extensions provide extra living space and can significantly increase the value of your property.

House extensions can be categorised based on direction, structure and function. The main types include rear extensions, side return extensions, wrap-around extensions, and double or single-storey extensions. More specific ones could be kitchen extensions, loft conversions, basement conversions, garage conversions or conservatories. Select the type that best suits your property and meets your space needs, if you are unsure, speaking with a local home extension builder in Southend-on-Sea.

Generally, house extensions are worth the investment. They provide additional living space and can dramatically increase the resale value of your home, often covering the initial investment cost. However, plan carefully and choose a reputable house extension builder to ensure a high-quality build that will add value to your property.

The cost of a house extension can vary significantly based on several factors, such as the size, complexity of the design, quality of materials used, and geographical location. However, as a rough estimate, a single-storey extension can range from £1,000 to £2,000 per square metre, whereas a two-storey extension can start at around £1,500 per square metre.

Planning a house extension involves several stages, including idea generation, design, planning permission, and construction. Consult with a house extension architect to create a design based on your needs and budget. Ensure to check with your local council about planning permissions. Finally, choose a reputable house extension builder to bring your vision to life.
Why Hire Architects & Architectural Designers on Houzz?
234Local Pros on Houzz Who Serve Southend-on-Sea, Essex
95,000+Total Number of Reviews Left by Homeowners
Are you considering a house extension? On Houzz, you can find an extensive selection of Southend-on-Sea house extension professionals near you, eager to turn your vision into a reality. Whether you're planning an extra bedroom, expanding your kitchen or designing a brand-new workspace, these professionals have the skills and expertise to make your project successful. House extension professionals include architects who can draw up detailed plans and builders who will execute them to the finest standards.

Choosing a house extension professional on Houzz ensures peace of mind, knowing that you’re in safe hands. They come with a strong track record of creating bespoke, high-quality extensions in Southend-on-Sea in a wide range of styles and budgets. Whether planning a new kitchen extension, adding a new storey, or just wanting more living space, find your house extension solution with us.