House Extensions Newcastle & North East | Acre Design
Completed rear house extension with charred larch cladding and full-height glazing, lit at dusk, on a stone house in Low Fell, Gateshead

House Extensions in Newcastle & the North East

Whether you're planning a modest kitchen extension or something more ambitious, Acre Design helps homeowners across Newcastle and the North East explore, design and deliver house extensions that work for their families and their budgets.

Come to us with the problems you want to solve and the budget you have in mind. We'll help you explore what's possible.

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Why extend your home?

House extensions in Newcastle: creating a home that works for you

Most houses weren't built for the way we want to live today. Over the years, many properties have had conservatories or smaller extensions added on, often without much thought about how the house works as a whole. The result can be a collection of spaces that don't really solve the problems homeowners are facing.

When people come to us about a house extension, they're rarely just looking for more square footage. They want a home they can be proud of. Somewhere they can invite friends and family over, spend time together and enjoy a bit more elbow room.

For many families, that means a beautiful, light-filled kitchen extension, with a large island, an open-plan dining and living space, and sliding or bifold doors connecting the house to the garden.

For others, the challenge is upstairs. Perhaps a box bedroom has become too small for a growing teenager, or hardworking parents would love a spacious main bedroom with an en-suite and dressing area. We all seem to have more belongings these days, and having somewhere for everything can make an enormous difference to how a home feels.

Completed kitchen extension in Jesmond, Newcastle, with rooflights, island seating and a dining table beside the garden doors
Living space inside a completed orangery-style rear extension in Whitley Bay, with a roof lantern and sliding doors to the garden
Large open-plan kitchen extension with rooflights at a period home in Monkseaton, North Tyneside

There's also the question of whether to extend or move house.

Moving can be expensive. By the time you've paid stamp duty, solicitors' fees, removal costs and potentially more for a larger property, you could have invested a significant amount in improving the home you already own. And the house you move into might still need work.

If you're settled in a community you love, a thoughtfully designed house extension or renovation can often give you a better home without having to move.

Getting the design right from the beginning is what really matters.

We regularly speak to homeowners who've been discussing their extension ideas for years. They've imagined where it might go and what it could look like, but haven't necessarily considered what's achievable through planning permission or permitted development, what the structural implications might be, or how to make the best use of their budget.

That's where having experienced architectural designers involved from the outset can make a real difference.

At Acre Design, we consider the layout, planning requirements, structural design, Building Regulations, construction costs and practicalities of building, rather than simply drawing the extension a homeowner initially imagined.

Our free Ask the Expert call is an opportunity to talk through your ideas, understand what's possible and get some initial professional advice before committing to the next stage.

Ultimately, it's about creating a home that makes everyday life better. A home that feels calm, spacious and enjoyable to live in, rather than somewhere you're constantly battling clutter or compromising on space.

Good design starts with understanding the problem

Don't start with an extension. Start with what you want to change.

You might think you need a rear extension, a loft conversion or an extra bedroom above the garage.

But before deciding what to build, it's worth asking a different question: what isn't working about your home?

Perhaps the ground floor feels disconnected, the kitchen is too small or the house is difficult to keep warm. Maybe your children are getting older and need more space, or you have a garage that rarely gets used.

These are the things we'd much rather hear about when you first get in touch.

Because once we understand the problems you're trying to solve, we can explore the best ways to solve them.

Sometimes a house extension is absolutely the right answer. Other times, a smaller extension combined with internal remodelling could achieve more. A loft conversion might provide the additional bedrooms you need without changing the ground floor at all.

Loft conversion with apex glazing and views over the rooftops at a period home in Monkseaton, North Tyneside
Redesigned bungalow in Washington with vertical timber cladding and a glazed gable end
Bungalow at Hamsterley Mill transformed into a family home with white render and wide sliding doors to the garden

Tell us what you need and what you can invest

Having an idea of your budget from the beginning is enormously helpful.

Our job is to explore what might be achievable within that investment, rather than design something beautiful only for you to discover much later that it's unaffordable.

Through our Needs & Options Review, we can investigate different approaches, including options that sit a little below or above your initial budget.

We'll help you understand the opportunities, compromises and likely costs before you commit to a particular design.

Our free Ask the Expert call is a good place to start. We can discuss your ideas, sense-check your budget and help you understand the next steps.

The best projects begin with an honest conversation about what matters most to you, not a predetermined set of building works.

Better decisions before expensive design work begins

When you're considering spending £100,000 or £200,000 on your home, you shouldn't have to make important decisions based on a quick walk around your property.

At Acre Design, we believe the early stages of a project deserve more thought than that.

Rather than rushing you straight into an expensive design phase, we start with a relatively low-cost Needs & Options Review. It gives us the opportunity to properly understand your home, your family, your priorities and what you're hoping to achieve.

We look at what's essential, what's nice to have, and how your ambitions align with your likely budget.

We also take the time to understand your personal tastes, prepare a clear project brief and explore the different ways your home could work better for you.

Using our experience of planning permission, Building Regulations, structural design, construction costs, natural light and the way spaces connect, we'll typically develop three or four different layout options.

Each option approaches your brief slightly differently, helping you understand the possibilities, compromises and likely budget implications before committing to the next stage.

We then sit down together to review the options, discuss our recommendations and agree what makes the most sense for you.

It's a calmer, more considered way to begin a major home improvement project.

Layout optionColour-coded ground-floor layout option of the kind prepared during a Needs & Options Review
Proposed designRendered floor plan of a proposed home redesign at Darras Hall, Northumberland

Start with a free 15-minute Ask the Expert call

If you're still researching your options, you don't need to have everything figured out before speaking to us.

Our initial Ask the Expert call is an opportunity to ask questions, talk through your ideas and understand what might be possible.

There's no obligation to proceed.

If we think we're a good fit for your project, we'll explain how our Needs & Options Review works and what the next steps could look like.

How much does a house extension cost?

Two extensions of exactly the same size can have very different construction costs.

Size is only part of the picture. Access to the site, ground conditions and foundations, the amount of structural alteration and steelwork, the external materials, glazing and roof design, and the level of internal finishes, kitchens and bathrooms can all make a significant difference.

That's why we prefer to start by understanding how much you'd like to invest and what that budget needs to include. We then explore design options and their likely costs from the earliest stages and, depending on the level of service you choose, arrange an independent quantity surveyor's assessment before you commit to a planning application.

Our house extension cost guide explains in more detail what influences costs and how to set a realistic budget early.

Open-plan kitchen extension in Sunderland with an exposed steel beam and roof glazing

Example project

Forest Hall House Extension: Transforming Family Living

Forest Hall, Newcastle upon Tyne. Proposed design, architectural visualisations.

BeforeExisting rear conservatory at a residential property in Forest Hall, Newcastle
Original conservatory at a family home in Forest Hall, Newcastle.
Proposed designProposed rear house extension with vaulted roof and apex glazing in Forest Hall
Acre Design's proposed rear house extension, featuring apex glazing, a vaulted roof and matching brickwork.

From an underused conservatory to a beautiful, light-filled family home

This family home in Forest Hall, Newcastle, had an existing conservatory that simply wasn't working as well as the homeowners wanted.

They loved entertaining friends and family, but the conservatory was only really comfortable when the outside temperature was just right. Thermal separating doors also meant it felt disconnected from the rest of the house.

What they really wanted was somewhere the whole family could get together, with plenty of room for entertaining, enjoying meals and spending time with friends, whatever the weather.

Rather than simply replacing the conservatory with another room, we looked at how the entire rear of the property could work better.

ExistingExisting ground-floor plan showing the conservatory, kitchen, snug and living room
Proposed designProposed ground-floor plan showing the vaulted dining extension, snug and utility room

By replacing the existing conservatory and rethinking the surrounding living spaces, we developed a more practical ground-floor arrangement with a spacious dining area, additional living accommodation and a separate utility room.

Creating something special with thoughtful architectural design

Our proposed design replaces the old conservatory with a beautiful vaulted extension, featuring impressive apex glazing and an exposed timber scissor truss.

The combination of high ceilings, rooflights, natural materials and carefully considered glazing creates a bright, welcoming dining space with a real sense of character.

Proposed designProposed vaulted dining room with exposed timber truss and apex glazing
Proposed designProposed house extension and covered garden seating area in Forest Hall

Approximately £140,000 including VAT

Project construction budget, including associated alterations and covered garden pagoda.

Planning permission and Building Regulations

These are two different processes, and many extensions need to think about both.

Planning permission

Planning permission is about whether an extension is acceptable in principle: its size, appearance and effect on neighbours and the surrounding area.

Some extensions can be built under permitted development rights without a full planning application, but there are limits and conditions, and the rules are stricter in conservation areas and for listed buildings.

Building Regulations

Building Regulations are a separate process. They set minimum standards for how an extension is built, covering areas such as structure, fire safety, drainage, ventilation and energy efficiency.

Most extensions need Building Regulations approval, even when planning permission isn't required.

Completed orangery-style rear extension in Whitley Bay with corner glazing opening onto the patio
Construction in progress inside a new home in Woolsington, Newcastle, with blockwork walls and window openings

More than just architectural drawings

Beautiful architecture. A better building experience.

A successful house extension should do more than look beautiful. It should work brilliantly for the people living in it, make the most of the available budget and be a positive experience from the first conversation through to construction.

At Acre Design, some of our favourite projects have been those where we've worked closely with homeowners throughout the entire process.

It starts with understanding how you live, what matters most to you and what you're hoping to achieve. We explore different layouts, share ideas and develop a design that makes the most of your home without adding unnecessary space or expense.

Sometimes, a little creative thinking can make a much bigger difference than simply building a larger extension.

By carefully considering the layout and construction costs early, we can often help you prioritise the features that make a home feel special. That might be beautiful glazing, a striking roof design, natural materials or a carefully considered interior.

Proposed design3D visual of a proposed single-storey rear extension with rooflights on a red brick semi-detached house with a dormer gable
Proposed design3D visualisation of a proposed living area with exposed roof beams at a home in Darras Hall, Northumberland
Proposed design3D visualisation of a proposed kitchen and dining space with herringbone flooring and dark cabinetry

Making the important decisions before building begins

We believe that the more decisions you make during the design process, the fewer difficult decisions you'll face during construction.

Our detailed measured surveys, technical drawings and optional interior fit-out packages help ensure that the builder has the information needed to price and deliver the project properly.

Depending on your chosen service level, we can specify everything from structural details and external materials through to flooring, internal doors, skirting and tiling.

We can also arrange competitive tenders from three contractors, all working from the same information, so their prices can be compared more fairly.

The result is a project where everyone has a clearer understanding of what's being built, how it should look and what it is expected to cost.

Construction will always involve some uncertainty, but careful preparation can significantly reduce the risk of unexpected costs, delays and last-minute decisions.

Depending on the level of service you choose, we can also arrange independent Quantity Surveyor cost assessments, produce photorealistic 3D visualisations, help you source finishes and fittings through trusted suppliers, and provide support with contractor selection and building contracts.

These services help you make informed decisions earlier, understand what you're investing in and give your contractor a clearer picture of the finished project.

Proposed design3D visualisation of a proposed two-storey rear extension with large glazed gables at a home in Whitley Bay
Proposed design3D visualisation of a proposed stone home design in Longframlington, Northumberland

Every home deserves the same care

Whether you're planning a modest extension to make family life easier or something more architecturally ambitious, we understand how important the project is to you.

Even a relatively small extension can completely change the way you live in your home.

That's why we apply the same care, attention and structured approach to every project.

For us, the best outcome is a happy homeowner who feels informed, supported and confident throughout the process, with a beautiful, practical space to enjoy for years to come.

Completed rear extension seen from the garden of a period home in Monkseaton, North Tyneside
Renovated period living room with a restored fireplace in a historic Newcastle home
Open-plan kitchen with a marble island in a self-build home in Great Park, Gosforth
Egg chair beside a large picture window in a self-build home in Great Park, Gosforth

Frequently asked questions

What budget do I need to work with Acre Design?

We typically work on residential projects with construction budgets starting from around £50,000 plus VAT.

At this level, there may be opportunities for smaller extensions, internal remodelling or a combination of improvements, depending on the existing property and the work involved.

Every home is different, and the amount you can achieve will depend on factors such as access, structural alterations, materials and the level of internal finishes.

If you're unsure what your budget could achieve, our free Ask the Expert call is an opportunity to discuss your ideas and whether we're the right fit for your project.

Your home isn't just an investment on a balance sheet. It's where you spend much of your life. A well-designed extension or renovation might improve its value, but the everyday benefits of a warmer, brighter, more practical home can be just as important.

Ready to explore what's possible with your home?

You don't need to have everything figured out before getting in touch.

Whether you have a clear idea for a house extension or you're simply frustrated with the way your existing home works, we're happy to talk through your options.

Our free Ask the Expert call gives you an opportunity to discuss your ideas with an experienced member of the Acre Design team, ask questions about planning and construction, and start understanding what's realistically achievable.

Tell Us About Your Project

Book a Free Ask the Expert Call

Prefer to talk first? The Ask the Expert call is free, takes about 15 minutes and there's no obligation.