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Expert home extensions from Berkshire to Sussex

Experienced, professional and reliable building contractors creating stunning extensions throughout Berkshire, Sussex and the South East

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House extensions across the South of England

At Parkways Construction, we deliver bespoke house extension services with a strong focus on quality craftsmanship, attention to detail and client satisfaction. Whether it’s a rear extension, a double-storey addition, or a bright open-plan layout, we work from Berkshire to Sussex, transforming homes with seamless, stylish results. Our highly experienced team of builders and tradespeople ensure that every detail is managed with precision, from the foundations to the final finish. Known for our reliability, transparent communication and superior workmanship, we’re proud to offer a house extension service that homeowners trust. Each project is tailored to suit your property, lifestyle and budget, always delivered on time and to the highest standards. If you’re looking for a professional, high-quality building service that adds space and value to your home, Parkways Construction is your trusted local partner.
  • Single and double storey extensions, designed around the way you live
  • Complete construction, from foundations and brickwork to roofing and glazing
  • Plumbing, electrics, plastering and flooring for a fully finished space
  • Clear planning and coordination throughout your extension project
Get a quote for your extension
Home extensions in the South East

Expand your living space

Building an extension involves much more than adding extra space. We carry out the groundworks, foundations, structural alterations, brickwork and roofing, alongside the plumbing, electrical work, plastering and flooring. From single and double storey extensions to rear, side and wraparound designs, we understand how each element needs to work together. We pay particular attention to insulation, drainage, glazing and the connection to the existing building, creating a finished space that feels like a natural part of your home.
  • Structural openings and steelwork to connect new and existing rooms
  • Matching brickwork and finishes, or creating a contemporary contrast
  • Rooflights and generous glazing to bring natural light into the home
  • Insulation, heating and ventilation for comfortable use throughout the year

Our Related services

Exterior works
Groundworks
Kitchen & bathrooms
Design & Build

Why choose Parkways for your home extension?

Design and build

Extensions built to maximise your space, preferences and budget.

Trades coordinated

Plumbing, electrical work and finishing trades managed as one project.

One point of contact

A clear route from the first discussion through to completion.

Considered choices

Practical material choices and attention to reducing avoidable waste.

With Offices in Reading and Pulborough

From our HQs in Berkshire and Sussex, we comprehensively cover the South East

Expert home extensions from Berkshire to Sussex

Tell us what you have in mind and where the property is. Whether you’re ready to start or still exploring the options, we can discuss the work involved and the next steps.

Parkways Construction Ltd is a CHAS registered company.

Frequently asked questions

How much will my house extension cost, and what should the quote include?

The cost depends on more than the size of the extension. Ground conditions, access, structural alterations, drainage and your choice of finishes can all affect the budget. Check whether your quote includes glazing, electrics, heating, plastering and decoration, alongside the main building work. It should also clearly identify VAT, exclusions and any allowances for items you have yet to choose. Agreeing the scope before work starts makes quotes easier to compare and helps reduce unexpected costs.

Do I need planning permission for a house extension?

Some house extensions can be built under permitted development rights, provided they meet specific limits and conditions. Others require a planning application, depending on the design, location and property’s planning history. Certain larger rear extensions require prior approval even under permitted development. Building regulations approval is a separate requirement and is normally needed for a house extension. Confirm which approvals apply to your property before starting work.

How long does a house extension take from planning to completion?

The building work is only part of the timetable. You also need to allow time for surveys, drawings, structural design, any necessary approvals and ordering materials. Once construction begins, the programme depends on the extension’s size and complexity, site conditions and how much of the existing house needs altering. Ask for a schedule that separates preparation from construction and explains when key rooms will be affected. Choosing kitchens, windows and finishes early helps avoid delays.

Can I live at home while my extension is being built?

Often, yes, particularly if the new structure can be built before opening it into the existing house. The main consideration is whether you can retain safe access, a usable bathroom and somewhere to prepare food. Expect noise, dust and some interruptions to services. Structural openings and kitchen alterations can be especially disruptive, so a short period away may be sensible. Discuss these stages before work starts so you can plan around family life and working from home.

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