SMARTePLANS® Experts in Planning!
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Email: team@smarteplansuk.com
SMARTePLANS®
167-169 Great Portland Street, London, W1W 5PF
House Extension Plans
House Extension Plans & Drawings | SMARTePLANS®
Professional planning drawings for house extensions from £595. Fixed fees, fast turnaround and full planning application management.
✓ Plans From £595 ✓ Drawings Within 72 Hours ✓ Fixed Fees ✓ 5,000+ Homeowners
House Extensions
Professional house extension drawings for single‑storey, double‑storey, side, rear and wrap‑around extensions. Full planning application management, lawful development checks and building regulations packs.
House extension planning drawings
3D house extension drawings
Rear extension architectural drawings
Single Storey Rear Extension
Single storey extension plans
SMARTePLANS®
Rear Extension
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Wraparound extension plans
House extension plannin
Rear Extension Planning
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house extension drawings
House Extension Drawings
Why Choose SMARTePLANS® for Your Extension?
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Fast, accurate architectural drawings
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Planning & Permitted Development expertise
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Fixed pricing with no hidden extras
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Full application management with your local council
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Building Regulations packs available
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100% digital workflow — no site visit needed
Types of Extensions We Cover
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Single‑storey rear extensions
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Double‑storey extensions
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Side extensions
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Wrap‑around extensions
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Kitchen extensions
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Orangery / sunroom extensions
What You Get
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Existing drawings
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Proposed drawings
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Elevations
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Roof plans
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Site plan
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Planning statement (if required)
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PD compliance check
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Full council submission
Our Process
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Upload photos + measurements
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We produce your drawings
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You approve the draft
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We submit to your council
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We manage the entire application
Extension Plans FAQ
Our house extension planning drawing packages start from £595, with clear, fixed-fee pricing. The final cost depends on the type and complexity of your extension and the level of service required. Request a free quote and we'll confirm the cost before any work begins.
Most planning applications require a set of scaled existing and proposed floor plans, elevations, site/location plans and, where relevant, roof plans and sections. We'll establish exactly what is required for your project and prepare the appropriate drawing package for submission.
Not always. Some house extensions can be carried out under Permitted Development rights, while others require a planning application or Prior Approval. We'll assess your proposed extension and advise you on the appropriate planning route before proceeding.
Yes. We can prepare and submit your planning application to the local authority and act as your planning agent, managing the application and dealing with the council throughout the determination process where this service is included in your package.
In most cases, yes. Planning and Building Regulations are separate requirements. Planning deals primarily with whether the development is acceptable, while Building Regulations deal with matters such as structure, insulation, fire safety and construction standards. We can also prepare the detailed Building Regulations drawings required for your project.
Our streamlined digital service means we can typically prepare your initial planning drawings within 72 hours once we have all the information required to start your project. More complex projects may take longer, and we'll advise you of the expected timescale at the outset.
Start your extension drawings today — fixed price, fast turnaround.Trusted by 5,000+ homeowners ⭐⭐⭐⭐⭐
Our approval success rates speak for themselves, don't leave it to chance, contact us today!