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Double Storey Extension in Horncastle

Add Space Upstairs and Down
Without Moving Home

Double storey extensions can ease pressure across the whole house, adding living space below and better bedroom or bathroom space above for family life.

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

Why Extend with SB

Why Choose SB for Double Storey Extensions

Whole House Planning

Ground and first floor needs considered together.

Structure First

Foundations and load paths planned before work starts.

Access Managed

Scaffolding and roof work planned to reduce disruption.

Built To Match

Rooflines and materials chosen to suit existing home.

Double Storey Options

Choose the Space That Helps Both Floors

The best double storey extension depends on where space is missing now and which changes will improve room use across the whole house.

Rear Extensions

Add living space below and bedroom space above in one build.

Extra Bedrooms

Create sleeping space where busy households feel under pressure.

First Floor Layout

Improve upstairs layout so bedrooms, storage and access feel easier.

Side Extensions

Widen the house on both floors and improve how rooms connect.

Bathroom Above

Add upstairs bathroom where morning routines need to work better.

Matching Finishes

Use rooflines and materials that help the extension sit naturally.

Planning a Double Storey Extension

What to Plan Before Building Over Two Floors

Double storey extensions need careful early planning because structure, approvals and room layout all affect cost, disruption and finished home.

Double Storey Extension Design

How Both Floors
Start Working Together

Double storey extension design should improve living space below and bedroom or bathroom space above, so the whole home works better.

Planning Permission for Double Storey Extensions

What Affects Approval
Before Work Starts

Planning permission usually depends on height, depth, boundaries and design, with party wall considerations sometimes affecting the project.

Structural Calculations for Double Storey Extensions

How Loads Travel
Through the Build

Foundations, structural calculations, steel beams load paths need planning carefully because the extension weight over two floors.

Scaffolding for Two Storey Extensions

How Access Shapes
the Build Programme

Roofing, scaffolding and site access affect protection, timing and how smoothly the build can move once work begins.

Cost of a Double Storey Extension

What Shapes Cost
and Build Timing

Cost and timing depend on size, structure, roofing, finishes, access, approvals and how much matching work is needed.

    
 
 
       Posted on Google  
   
   Kathryn Fairs 
 
 
 
 Trustindex verifies that the original source of the review is Google. From the first consultation to the final result Sam and his team carried out exemplary work on our large house extension. We were especially impressed with the standard of brickwork in the build. Simon and Sam were happy to adapt and correct as different situations arose, without any hassle. The whole team were a pleasure to have in our home.
  
 
      Posted on Google  
   
   Debbie Ginns 
 
 
 
 Trustindex verifies that the original source of the review is Google. From start to finish, Sam and his team have been fantastic, building an annex for my Mum. As Mum said, it was like having family building it for us, and exactly what she wanted, 100% honest, reliable, friendly team. Couldn't have asked for more. Thank you all
  
 
      Posted on Google  
   
   Joanne Kirby 
 
 
 
 Trustindex verifies that the original source of the review is Google. Sam and his team at SB Construction were very professional, hard working and courteous. We are extremely pleased with our finished extension and would highly recommend them.
  
 
      Posted on Google  
   
   Tom Riggall 
 
 
 
 Trustindex verifies that the original source of the review is Google. Fantastic experience having SB construction complete our extension a few years back. Very professional and always reliable and came the days they said. The 2 storey extension to the left of our house was completed in no time at all .. and to a high standard, sourced bricks to match perfectly. Would highly recommend them .. brilliant from start to finish ! Thank you
  
 
      Posted on Google  
   
   Suzi Ireland 
 
 
 
 Trustindex verifies that the original source of the review is Google. Sam and his team recently completed a loft conversion for us, and we can’t recommend them enough. Where we had been let down by other professionals previously, SB construction went above and beyond to ensure that the build was able to go ahead. And wow what a transformation we couldn’t be happier. Not only the build itself is fantastic, but the family run feel and that personal touch made the whole build experience enjoyable. Suzi & Graham Ireland.
  
 
      Posted on Google  
   
   paul keys 
 
 
 
 Trustindex verifies that the original source of the review is Google. SB construction, I don’t believe they can be bettered, they really do bring your dream to life.. premium build quality by highly skilled craftsmen. Thank you for meeting my expectations and living up to your promises.
  
 
      Posted on Google  
   
   Claire Dovey 
 
 
 
 Trustindex verifies that the original source of the review is Google. Very happy with build of extension and annex. All staff friendly and courteous. Would highly recommend
  
 
      Posted on Google  
   
   Kim Butler 
 
 
 
 Trustindex verifies that the original source of the review is Google. Very professional firm excellent workmanship Highly recommended.

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Question on Double Story Extension

What people ask about double storey extensions?

Do I need planning permission for a double storey extension?

Usually, yes. Height, depth, boundaries and design all affect approval, and some projects may also need party wall agreements before work begins.

How much does a double storey extension cost?

The cost depends on size, foundations, structural steel, roof form, access and finishes, so drawings, site detail and the brief need checking first.

Can I add bedrooms and a bathroom in one extension?

Yes. Extra bedrooms and a bathroom above can work well together, provided the first floor layout and structure are planned properly.

Do two storey builds need more structural planning?

Yes. Structural calculations, load paths, foundations and steel beams matter more because the extension carries more weight and affects more of the house.

How long does a double storey extension usually take?

Timing depends on approvals, scaffolding, structure, roofing, inspections and finish level, with complexity and matching work shaping the programme.

Sam

CEO, Director

Recent Double Storey Work

Double Storey Projects That Add Space

Browse recent double storey projects to see how homes gain better living space, extra rooms and layouts that feel easier to manage.

Need Space on Both Floors?

Share what the house is missing now, how both floors need to work get clear advice before drawings and approvals begin.

Add Space Upstairs and Down
Without Moving Home

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