HOUSE EXTENSIONS IN NORTHAMPTONSHIRE
House Extensions in Northampton
More room for the way you live. Swiss Build creates carefully planned house extensions, kitchen extensions and extra family space for homes across Northamptonshire.
Single-storey extensions • Double-storey extensions • Kitchen & rear extensions
- Northampton based
- FMB member
- TrustMark registered
- £5m public liability cover
MORE ROOM, SAME HOME
More Space. A Home That Works For You.
A house extension can give you the space you need without leaving the home and area you love. Create a larger kitchen, a brighter living area, extra bedrooms or a more practical family layout.
Swiss Build plans the construction around your property, your drawings and how you want to use the new space. From structural work to electrical, plumbing and finishing, we coordinate the agreed build scope.
THE RIGHT FIT FOR YOUR HOME
New Space That Feels Part Of Your Home
A successful extension connects old and new. We consider the existing layout, access, roof, drainage and services, alongside the light, comfort and finish you want. The result is a practical new space that works with the rest of your home.
Our Extension Services
House Extensions For The Way You Live
Choose the space that suits your home. We will review the proposed design and practical requirements during the site visit.
01
Single-Storey Extensions
Create extra living space with a rear or side extension. Make room for a larger kitchen, dining area, family room or home office, with the structure, roof and connections planned around your existing home.
02
Double-Storey Extensions
03
Kitchen & Rear Extensions
Bring cooking, dining and family life together in a more generous space. We can coordinate the extension, structural openings, electrical and plumbing work, heating and agreed finishes as part of one planned project.
Already have drawings? Send them with your enquiry so we can review the build scope and prepare a detailed quotation.
CLEAR ADVICE BEFORE YOU COMMIT
Built Around Your Home And Your Plans
The details matter before building begins. We review your plans, site access, foundations, drainage, structural connections, roof design and service routes, then set out the work and finishes in a clear quotation.
- Foundations, drainage and structural work
- Roofing, insulation, windows and doors
- Electrical, heating and plumbing work
- Clear scope, finishes and handover
Connecting Your Home And Extension
Existing Home
Your layout, access and services
New Extension
More space, light and flexibility
Structure, services and finishes are planned together so the new space connects with the rest of your home.
Understand Your Options
Single-Storey Or Double-Storey Extension?
Both add usable space, but the right choice depends on your home, priorities and the proposed design.
Single-Storey: More Space Downstairs
A practical way to enlarge a kitchen, dining area or family room. Rooflights and suitable doors can bring in natural light and create a stronger connection with the garden.
Double-Storey: Room On Two Levels
An option when you need additional bedrooms or bathrooms as well as ground-floor space. The design needs careful consideration of structure, roof connections, neighbouring properties and the relevant approvals.
Love Your Home, But Need More Room?
Tell us about your property, your ideas and the space you want to create.
How we work
From first enquiry to final handover
A practical process with the plans, build scope and finishes agreed before work starts.
01 / ENQUIRE
Tell us your aims
Share your address, ideas, photos and any drawings so we can understand the space you need.
02 / SURVEY
Assess the property
We review your home, plans, access, structural requirements and connections to existing services.
03 / QUOTE
Agree the scope
Review the proposed works, inclusions, finishes and price before agreeing the next step.
04 / INSTALL
Build & Hand Over
We coordinate the agreed trades, carry out the works and hand over your completed space.
Frequently asked questions
Good questions before extending your home
Every home and project is different. We can discuss your ideas, drawings, practical requirements and the next steps.
How much does a house extension cost?
Costs depend on the size, design, access, foundations, structural work and finishes. Share your ideas, drawings and property details so we can review the scope and prepare an itemised quotation.
Do I need planning permission for an extension?
Some extensions can fall within permitted development, while others need planning permission. The rules depend on your property and proposed work. Confirm the planning position for your project before construction begins. Planning guidance.
Will my extension need building regulations approval?
Most house extensions need building regulations approval. Planning permission and building regulations are separate requirements. Discuss the required approval, inspections and completion documentation with building control for your project. Building regulations guidance.
Do I need drawings before contacting you?
You can enquire while you are still exploring ideas. If you already have architectural drawings or structural calculations, send them with your enquiry. We can review what is available and discuss the next steps before pricing the build.
Can I stay in my home during the build?
Often, but it depends on the extent of the work, access, temporary services and how the extension connects to your home. We discuss disruption and practical arrangements before work starts so you can plan ahead.
Do you organise the other trades?
Swiss Build can coordinate building, roofing, electrical, plumbing, heating, plastering and finishing work within the agreed scope. Your quotation sets out what is included and any items you need to arrange separately.
Local service
House extensions across Northamptonshire
Swiss Build is based in Northampton. We work locally and can discuss extensions in nearby towns and villages. Tell us your postcode when you enquire so we can confirm availability.
Plan Your Extension
Ready to make more of your home?
Whether you want a larger kitchen, extra family space or more room on two levels, tell us about your project and we will talk through the next step.