NHBC Registered · LABC Warranty · Which? Trusted Trader · Checkatrade Verified
£0
Difference between quote and final invoice. Ever.
47+
Homes extended across Sutton Coldfield in the last 12 months
5★
Google rating
36
Years experience behind every project

We are currently accepting 2 new Extension projects for Q2 2026 — enquire now to secure your start date

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WHAT WE BUILD

You love where you live.You just need more space.

You're in the right street, the right school catchment, the right neighbourhood. Moving isn't the answer — building is. We add serious space and serious value to homes across Sutton Coldfield, without the upheaval, the stamp duty, or the stress of moving.

What we build

Every type of extension.One trusted team.

Four Oaks Builders specialises in kitchen extensions, rear extensions, side returns, loft conversions, double storey extensions, and garage conversions for homeowners across Sutton Coldfield, Four Oaks, Mere Green, Streetly, Aldridge, Lichfield, and the wider West Midlands. Every project is fixed price, fully managed, and built to last.

Sutton Coldfield Extensions

KITCHEN EXTENSIONS

Most families extending in Sutton Coldfield want the same thing — a kitchen that finally works. Open plan living, bi-fold doors to the garden, a space the whole family actually uses. We build kitchen extensions that transform how your home feels, from the inside out.

Typical investment: £40,000 – £90,000

  • Planning application managed end to end
  • Structural engineer included as standard
  • Bi-fold and aluminium door specialists
  • Underfloor heating and lantern roofs
  • Fixed price from detailed survey
DISCUSS YOUR KITCHEN EXTENSION

Sutton Coldfield Extensions

LOFT CONVERSIONS

The most cost-effective way to add a bedroom and bathroom to your Sutton Coldfield home. A well-designed loft conversion adds more usable space per pound spent than any other extension type — and in B74 and B75, it adds significant resale value too.

Typical investment: £35,000 – £65,000

  • Dormer, Velux, hip-to-gable and mansard options
  • Structural engineer and party wall included
  • Building regulations sign-off guaranteed
  • Minimal disruption — most loft conversions don't require you to move out
  • 10-year workmanship warranty
DISCUSS YOUR LOFT CONVERSION
rear extension sutton coldfield

Sutton Coldfield Extensions

SINGLE STORY & REAR EXTENSIONS

A rear extension gives you the space your family needs without touching the front of your home. Whether it's a single storey addition or a full wraparound, we design and build rear extensions that feel like they were always part of the house.

Typical investment: £35,000 – £80,000

  • Single and double storey options
  • Full planning or permitted development
  • Structural engineer included as standard
  • Matched brickwork and materials throughout
  • Fixed price from detailed survey

VIEW SINGLE STOREY EXTENSIONS

DISCUSS YOUR REAR EXTENSION

Sutton Coldfield Extensions

DOUBLE STOREY EXTENSIONS

The most transformative extension type. A double storey addition gives you significant space on both floors — typically a larger kitchen and living area below, an extra bedroom and bathroom above. Exceptional value per square metre compared to moving.

Typical investment: £65,000 – £150,000

  • Full planning application managed for you
  • Structural engineer included as standard
  • Significant value added to your property
  • Dedicated project manager throughout
  • NHBC warranty available
DISCUSS YOUR DOUBLE STOREY EXTENSION

Sutton Coldfield Extensions

GARAGE CONVERSIONS

Already have a garage? Converting it is the fastest, most cost-effective way to add a usable room to your home. Home office, playroom, gym, guest bedroom — a garage conversion transforms wasted space into something your family actually uses every day.

Typical investment: £15,000 – £35,000

  • Permitted development in most cases — no planning needed
  • Insulation, electrics, plastering, flooring all included
  • Completed in as little as 4 weeks
  • Building regulations sign-off guaranteed
  • Fixed price from site survey
DISCUSS YOUR GARAGE CONVERSION

Sutton Coldfield Extensions

SIDE RETURN EXTENSIONS

The side return — that narrow passage down the side of your semi-detached — is the most underused space in Sutton Coldfield. Infilled and glazed, it transforms a cramped kitchen into a bright, open living space. One of the most impactful extensions relative to cost.

Typical investment: £30,000 – £55,000

  • Planning application or permitted development
  • Structural steel and glazing specialists
  • Roof lanterns and aluminium glazing
  • Matched brickwork throughout
  • Fixed price from detailed survey
DISCUSS YOUR SIDE RETURN EXTENSION

Permitted `development | planning permission

Do you need planning permission?Probably not.

Most single-storey extensions in Sutton Coldfield don't need a full planning application. Under permitted development rules, you can extend a detached home up to 8 metres from the rear wall, or a semi-detached up to 6 metres, without applying for planning permission.

We'll tell you within 24 hours whether your project needs planning permission or not — completely free, no obligation. All you need to do is tell us your address and what you're thinking of building. We'll check the rules, check your property's history, and give you a straight answer.

GET MY FREE PERMITTED DEVELOPMENT CHECK

Peace of mind, built in.We don't just say it. We put it in writing.

Why Four Oaks

You love your home.We make sure you love it even more.

Most families extending in Sutton Coldfield have heard the stories. The builder who disappeared after the deposit. The kitchen that took eight months instead of twelve weeks. The quote that doubled by the time the scaffolding came down.

We built Four Oaks to be the opposite of every one of those stories. Every promise we make is written into your contract. Every update happens whether you ask for it or not. And if something isn't right, we fix it before you ever have to ask.


"The weekly photo updates were a complete game-changer. We always knew exactly what was happening on site. They handed over three days early."
— Mark & Philippa Hassan, Extension · Streetly · £167,000

Promise 1:
Fixed-price contracts
The price we quote is the price you pay. We survey thoroughly, price honestly, and write it into a legally binding fixed-price contract. No variation orders. No surprises. No excuses.

Promise 2:
Dedicated project manager
From the day we break ground to the day we hand over, you have one person responsible for your project. One number to call. They know every detail and they're accountable for the outcome.

Promise 3:
Weekly photo updates
Every Friday without fail, a full photographic report of your extension's progress arrives in your inbox. You always know exactly what's happening, even when you're not home.

How It Works

From first call to finished extension. We've refined our process across dozens of extension projects. Designed to keep you informed, in control, and completely confident at every stage.

1

Free Site Visit

We come to you. Walk around the property, listen to what you want, and give you an honest picture of what's possible and what it will cost. No sales pressure. Ever.

2

Design & Planning

We work with your architect or recommend one — producing full planning drawings to your exact specification. We manage the entire planning application or permitted development notification, handling every query and condition with Birmingham City Council on your behalf

3

Fixed-Price Quote

A detailed, fully itemised fixed-price contract covering every element of your extension. You review it at your own pace. Nothing starts until you're certain.

4

Build

Our dedicated project manager runs the site from day one. Every trade vetted, scheduled, and supervised. Weekly photo updates arrive every Friday without fail. You always know exactly what's happening, even when you're not there.

5

Handover

We complete our own snagging survey before we invite you to see the finished extension. Every item resolved before you walk in. Building regulations sign-off in hand. We remain your first call for 12 months after handover — and when you're ready for the next project, you know where we are.

6

Your Home, Transformed

Walk through the door. This is the moment everything was planned for — the space your family needed, built exactly as you imagined, in the home you already love. We'll leave you to enjoy it.
What our clients say

Last 12 months: 47 families. 47 happy endings.

★★★★★
“I had the pleasure of working with Danielle and George, a young couple full of warmth and excitement for their future. They were preparing their home to start a family. We began just after Christmas, battling some tough weather, but we overcame it all. Across six weeks, we transformed the space: a new kitchen, media wall, garage conversion, a remodeled downstairs, and a home office. I also gave them what I’d call their ‘driveway of dreams.’ With over 30 years of experience, I put everything into this project . Seeing them ready to build their future made every bit of the project worthwhile.”

— Justin Venables, Owner, Four Oaks Builders
Danielle & George Harwood | Extension Project & Cost
Garage Conversion, Full Renovation & Driveway Installation in Tamworth (Near Sutton Coldfield) | Project Value: £35,000 Garage conversion & internal Works) | £16,000 Driveway (Gifted at £5,000) Thinking About Your Own Project? If you’ve seen our work locally or heard about us and are planning a renovation, extension, or conversion — we’d be happy to help. Four Oaks Builders – Sutton Coldfield Built on experience. Known locally. Trusted for quality.
★★★★★
“I had the pleasure of working with this couple on this project, and we’ve kept in touch ever since, with them following my work on Facebook over the past 5–6 years. The space was originally an old-style conservatory, which we transformed into a new-style dining room extension in just three weeks. We built a new structure with a slate roof and a vaulted ceiling, creating a bright, open space flowing from the existing kitchen."

— Justin Venables, Owner, Four Oaks Builders
Rezan - Great Barr
Project Value: £60,000 Single-Storey Extension with Slate Roof & Vaulted Ceiling

Thinking About Your Own Project? If you’ve seen our work locally or heard about us and are planning an extension, renovation, or outdoor transformation — we’d be happy to help.Four Oaks Builders – Sutton Coldfield Built on experience. Known locally. Trusted for quality.
★★★★★
" i had the privilege of working with Reece during an incredibly difficult time after losing his wife. This project became more than just a renovation — it was about creating a fresh start. We completed a full transformation, including a new kitchen, single-storey extension, new roof, and a redesigned driveway and patio. Every detail was handled with care, creating a space that feels strong, comfortable, and ready for the next chapter. With over 30 years of experience, this was a project that truly meant something beyond the build.”

— Justin Venables, Owner, Four Oaks Builders
Reece R
Full Home Renovation, Extension & Exterior Transformation in [Your Area]Project Value: £60,000 Kitchen Renovation, Single-Storey Extension & Full Internal Works New Roof Installation Driveway & Patio Installation

Thinking About Your Own Project? If you’ve seen our work locally or heard about us and are planning a renovation, extension, or transformation — we’d be happy to help.Four Oaks Builders – Sutton Coldfield. Built on experience. Known locally. Trusted for quality.

Areas we cover

Proudly serving the following locations
  • Sutton Coldfield
  • Four Oaks
  • Mere Green
  • Streetly
  • Aldridge
  • Lichfield
  • Tamworth
  • Solihull
  • Great Barr
  • Walmley
  • B74
  • B75
  • B76
  • B78
  • WS4
  • WS9

Start your project

Let's talk about your home.

Book a free, no-obligation consultation. We'll visit your plot or property, listen to your vision, and give you an honest, experienced picture of what's possible and what it will cost. No pressure. No obligation. Just straight answers from people who build homes for a living.

  • Completely free — no obligation whatsoever
  • We call within 1 working day
  • Site visit included at no cost
  • Fixed-price quote delivered within 7 days
  • Your details are never shared or sold
No obligation
Takes 2 minutes
We'll call within 1 working day
Your details are never shared or sold
Our Work

Homes that speak for themselves.

Sutton Coldfield Extension

Sutton Coldfield Extension

Large Single Storey Extension Open Plan · Contemporary 4 bed Sutton Coldfield £160,000 2023

Four Oaks Extension

Single Storey Extension With Sky Lantern · Glass Bi-Folds 5 bed Four Oaks £220,000 2023
Conservatory Conversion to Orangery

Conservatory Conversion to Orangery

Conversion Single Story Tipton £40,000 2025
Mere Green Renovation

Mere Green Renovation

External Render & Lighting, Internal Reconfiguration Mere Green £142,000 2023
Dorridge Extension

Dorridge Extension

Single Storey Extension Contemporary · Bi-Fold Doors · 3 bed Dorridge £110,000 2023
Hampton In Arden Extension

Hampton In Arden Extension

Contemporary Steel Frame Extension Front & Side Wrap · Sliding Doors · Bespoke Kitchen · Underfloor Heating 3 > 5 Hampton In Arden £200,000 2026
Free weekly guide

Not ready to extend yet? You will be.

Most homeowners spend 6–12 months thinking about an extension before they're ready to move forward. We've put everything we know into a free weekly guide — permitted development rules, how to choose a builder, real extension costs from real Sutton Coldfield projects, how to minimise disruption to your family. One email every Friday. No sales pressure. Ever.

Thinking about an extension is the easy part. Knowing where to start is harder. Most homeowners spend 6–12 months researching, getting conflicting advice, and worrying about getting it wrong before they pick up the phone.

We've distilled everything we know — from over 30 completed extensions across Sutton Coldfield and the surrounding area — into a free 12-week guide that arrives every Friday morning.

By the time you've finished, you'll know exactly what your extension will cost, whether you need planning permission, what every builder should be telling you, and how to avoid every mistake we've ever seen a Sutton Coldfield family make.

No sales pressure. No obligation. Just honest, experienced advice from people who build extensions for a living.

No sales pressure. No obligation. Just honest, experienced advice from people who build homes for a living.

The prize:

Every subscriber is automatically entered into our quarterly garden transformation draw. One winner every three months — our own team designs and builds a complete garden renovation for you. No catch. No obligation. Just our way of saying thank you for letting us be part of your journey.

What arrives in your inbox
Week 01
The six extension mistakes Sutton Coldfield homeowners make — and how to avoid every one
Week 02
Do you need planning permission? The permitted development rules explained for B74, B75 and B76
Week 03
What does an extension actually cost in Sutton Coldfield? Real numbers from real projects
Week 04
Kitchen extension, loft conversion or rear extension — which adds the most value to your home?
Week 05
Single storey or double storey — how to decide what's right for your property
Week 06
The design questions to answer before you speak to an architect
Week 07
How to minimise disruption to your family during a build
Week 08
The party wall agreement — what it is, when you need it, how to handle it
Week 09
Kitchen extensions specifically — the decisions that make or break them
Week 10
How to finance your extension — remortgage, further advance or savings
Week 11
What a good extension contract looks like — and the red flags to walk away from
Week 12
Your complete pre-extension checklist — everything in one place, ready for your first builder meeting
One email every Friday · No spam, ever · Unsubscribe any time · Your details are never shared
Draw details:

One winner drawn every quarter. Four Oaks Builders carries out the full garden transformation — design, preparation, landscaping, and planting. Scope agreed with the winner based on their garden. No purchase necessary. No obligation to proceed with any building work. Open to UK residents within our service area.

Free garden transformation

Win a complete garden transformation. On us.

Every quarter, Four Oaks Builders carries out a complete garden transformation for one lucky subscriber. Design, preparation, landscaping, planting — the full treatment, done by our own team. No catch. No obligation to build with us. Ever.

Designed and built by us. The same team that builds your neighbours' homes transforms your garden — properly.

Scope agreed with the winner. Every garden is different. We visit, we listen, we design something you'll love.

No purchase necessary. Simply join our free weekly planning guide below. You're entered automatically, every quarter, for as long as you're subscribed.

SUBSCRIBE NOW