Beautiful House Extensions in Coventry & Warwickshire
Create the space your home needs with a beautifully designed and professionally built extension from S & J Building & Electrical Ltd. We specialise in delivering high-quality house extensions across Coventry, Leamington Spa, Kenilworth, Warwick, Rugby and Nuneaton, managing your project from initial concept to completion.
Our team handles every stage of the build – architectural design, planning permission, structural engineering and full construction – ensuring a seamless, well-coordinated project delivered to the highest standard.
Why Choose S & J for Your House Extension?
- Local expertise in Coventry planning rules, conservation areas and structural requirements.
- End-to-end project management with one point of contact from design to sign-off.
- Skilled tradespeople and structural specialists delivering safe, compliant and precise workmanship.
- Transparent pricing with detailed, itemised quotations and no hidden extras.
- High-quality finishes with trusted suppliers for glazing, kitchens, bathrooms and flooring.
What Our Extension Service Includes
Every extension is delivered as a fully managed project and typically includes:
- Architectural drawings and concept design
- Planning permission or permitted development checks
- Structural calculations and RSJ installation
- Foundations, blockwork and roofing
- Plumbing, electrics and heating
- Glazing, doors and skylights
- Flooring, finishes and full decoration
- Building regulations sign-off
Extension Types We Offer
We offer a complete range of residential extensions designed to suit modern homes, period houses and character properties throughout Coventry and the wider Warwickshire area. Every extension is planned around your lifestyle, architectural style and long-term requirements.
Single‑Storey Extensions
Ideal for open-plan kitchens, dining areas and family living spaces.
Double‑Storey Extensions
Increase bedrooms, bathrooms or office space while reconfiguring the ground floor.
Rear & Wraparound Extensions
Maximise your home’s footprint and transform layout, flow and natural light.
Modular / Prefab Extensions
Fast, efficient builds with excellent energy performance and reduced disruption.
Related Conversions
Many clients combine an extension with a conversion project:
Loft Conversions
Featured Case Studies
Many clients combine an extension with a conversion project:
Full Rear/Wraparound Extension in Brandon, Coventry
A traditional semi-detached home transformed with a full rear and wraparound extension, creating a light-filled open-plan kitchen-diner with bi-fold doors, rooflights and RSJ-supported knock-throughs.
Full Kitchen Extension Refurb in Rugby, Warwickshire
A complete kitchen extension refurbishment with improved layout, upgraded electrics and plumbing, new kitchen installation and contemporary finishes throughout.
Benefits of Extending Your Home
A professionally designed and built extension offers lasting advantages:
- Increased property value through additional usable space.
- Ability to stay in the area you love without the stress of moving.
- Better energy performance with modern insulation and glazing.
- A layout tailored to how your family lives and uses the home.
- More natural light and improved connection to the garden.
Our 5‑Step Process
Discovery & Site Visit
We begin with a friendly consultation and site visit anywhere across Coventry and Warwickshire, from Earlsdon to Evesham, to understand your goals, budget and site conditions.
Design & Approvals
Our in-house team prepares detailed drawings and manages all planning applications, permitted development checks and building control requirements.
Pre-Build Preparation
We confirm the schedule, materials and finishes, and prepare your home to ensure a smooth, stress-free build.
Build
Phase
From foundations to final fixtures, our Coventry-based team coordinates every trade with a focus on quality workmanship, safety and tidy progress.
Handover & Aftercare
Once work is complete, we provide compliance documentation, warranties and aftercare guidance so your new space is ready to enjoy.
Where We Work
We provide full extension services across Coventry and the wider Warwickshire region, including:
We regularly work in Coventry, Leamington Spa, Kenilworth, Warwick, Rugby and Nuneaton, helping homeowners enhance their homes with well-planned, beautifully built extensions.
Frequently Asked Questions
Many extensions fall under Permitted Development, but larger or wraparound designs usually require full planning permission. We manage this process for you.
Most extensions take between 8 and 20 weeks on site, depending on size and complexity, plus time for design and approvals.
Yes. In most cases you can stay in your home during the build. We work carefully to minimise disruption and maintain essential access.
Yes. We coordinate structural engineers, RSJ design and all building control inspections and approvals.
Footprint, level of structural alteration, glazing choices, kitchen or bathroom specification and ground conditions are typically the largest cost drivers.
Planning an extension in Coventry or Warwickshire?
Book a free planning call and we will talk you through timescales, approvals and budget options.