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Side Extension Builders

Add the Width Your Home Needs to Work Better

When rooms feel squeezed and the layout fights daily life, side extensions can add useful width and make cooking, storage and movement feel less cramped.

Helping Homeowners Build Side Extensions in Horncastle Woodhall Spa Legsby Louth Boston Grantham Sleaford Market Rasen Spalding Skegness Gainsborough

Why Extend with SB

Why Homeowners Choose SB for Side Extensions

Width First

Plans shaped around where the house feels tightest.

Layout Checks

Light, access and room connections considered early.

Structural Planning

Openings, beams and foundations plan.

Built To Blend

Rooflines and materials matched for a joined-up finish.

Side Extension Options

Choose the Side Space That Helps Most

The best side extension depends on how the house feels narrow now and which change will make everyday living, storage and movement work better.

Side Return

Reclaim wasted passage space beside the house and make it useful again.

Single Storey

Add ground-floor width for kitchens or utility rooms use.

Double Storey

Add useful width upstairs & downstairs where both floors need more room.

Kitchen Space

Create a wider kitchen  with better movement, storage and light.

Utility Room

Move laundry, storage and daily clutter into a  practical side space.

Garage Link

Improve access between the garage and home so spaces connect better.

Planning a Side Extension

What to Plan Before Building Sideways

Side extensions work best when width, approvals and structure are settled early, before awkward compromises affect layout, cost and the finished space.

Side Extension Design

How Width Starts
Working at Home

Side extension design should improve circulation, storage and room flow where widening the house helps more than adding depth.

completed-house-renovation-extension-woodhall-spa

Planning Permission for Side Extensions

What Affects Approval
Before Work Starts

Planning permission or permitted development depends on width, height, boundaries and how the design sits beside the property.

view from inside an side extension

Steel Beams for Side Extensions

How Steel Beams
Support New Openings

Openings, steel beams and foundations need early planning so the side extension stays properly supported during the build.

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Side Extension Roofing Options

How Roof Choices
Help Extensions Blend

Roof shape, drainage and matching finishes help the side extension sit naturally with home.

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Cost of a Side Extension

What Shapes Cost
and Build Timing

Cost and timing depend on size, structure, roof type, finishes, access and the approvals needed before work begins.

single storey extensions completed by sb constructoin

Receive Your Detailed Quote for Your Side Extension

Get in touch today for a free detailed quote

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What people ask about side extensions

Side Extension FAQs

 

That depends on width, height, boundary position and design. Some side extensions may fit permitted development, while others need planning permission.

 

The cost of a side extension depends on size, foundations, steel beams, roof design, finishes and access, so a site visit helps shape a realistic quote.

 

Yes. Widening a narrow house can improve circulation, kitchen space, storage and daily comfort, especially where side space is currently underused.

 

Kitchen space, utility rooms and garage-linked layouts are common choices, but the best use depends on where the house feels tightest now.

 

Timing depends on approvals, structure, weather, inspections and access, with the side extension timeline shaped by complexity and finish level.

sb construction lincolnshire, sam butler design and build expert
Sam
CEO, Director

Recent Side Extension Work

Recent Side Extensions Projects

Browse recent side extension projects to see how slim gaps and narrow layouts become rooms that feel calmer, wider and easier to use.

Side Extension Contractors

Need More Width Without Moving Home?

Share the side space you have, what feels cramped now and get clear advice before drawings, approvals and structural work begin.

Free Side Extension Guide

Building Out to the Side? Read This.

Use the guide to compare layouts, check approvals and spot cost pressure points before you commit to drawings, quotes or build choices.

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side extensions by sb construction

Request your free guide before drawings, approvals and side extension plans start shaping the build.

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