If you're searching for experienced and affordable architects in Harrow, Draw Plans is your trusted local architectural design studio. We are qualified architectural designers and consultants offering professional services to homeowners across Harrow and surrounding areas including Pinner, Wealdstone, Stanmore, Northolt, Rayners Lane, South Harrow, and Ruislip.

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Founded in 2007, Draw Plans specialises in delivering high-quality, future-proof home designs tailored to maximise space, add value, and suit modern living. Whether you're planning a rear extension, loft conversion, or new build, we’re here to guide you from concept to completion — with plans starting from just £795 + VAT.

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House Extension Plans in Harrow from Just £795

Our architectural design services are built around value, clarity, and efficiency. For a starting fee of £795, we offer a complete design and planning service, including:

• Single & Double Storey House Extensions

• Loft Conversions

• New Build Homes

• Floor Plans & Elevation Drawings

• Building Regulation Plans

• Structural Design & Calculations

• Party Wall Services

• Planning Applications

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We manage hundreds of successful planning applications each year across London and the Home Counties, with in-depth knowledge of local planning policies in Harrow Council and neighbouring boroughs.

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Free Consultations and Tailored Home Visits

Every home and homeowner is different. That’s why Draw Plans offers free initial consultations and home visits across Harrow and beyond. During our measured survey consultation, we listen closely to your goals, assess your property, and identify ways to optimise layout, light, and flow — all while staying compliant with planning and building regulations.

Our goal is simple: to design functional, beautiful spaces that enhance your lifestyle and increase the long-term value of your home.

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Full-Service Architectural Solutions

Draw Plans is a multidisciplinary architectural design practice, made up of:

• Architectural Designers

• RIBA Associate Members

• Structural Engineers

• CAD Technicians

• Surveyors

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We combine creative vision with technical expertise, offering a full suite of services, including:

• Design & Layout Plans

• Planning Applications

• Building Regulation Drawings

• Measured Surveys

• Fire Safety & Land Registry Plans

• SIPS Construction Design

• 3D Visuals / CGI / 360 Virtual Tours

• Structural Engineering Calculations

• Lighting Design

• Energy Efficiency Consulting

• Smart Home Automation

• Green & Sustainable Building

• Future-Proofing Solutions

• Party Wall Agreements

• SAP Calculations

• Key Stage Project Management

• Express 7-Day Plans & Planning Services

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Areas We Cover Around Harrow

In addition to central Harrow, Draw Plans provides services in:

• Pinner

• Northolt

• Wealdstone

• Stanmore

• Rayners Lane

• Ruislip

• South Harrow

• Eastcote

• Greenford

• Harrow-on-the-Hill

• Wembley

• And throughout Northwest and West London

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Why Homeowners Choose Draw Plans

• Trusted since 2007

• Hundreds of planning applications submitted annually

• Free consultations and personalised advice

• Transparent pricing starting at just £795

• Fast turnaround and express plan options

• A commitment to design excellence and customer satisfaction

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What Our Clients Say

★ ★ ★ ★ ★
"Draw Plans did a fantastic job designing our rear extension in Harrow. They listened carefully to what we wanted and created a layout that really opened up our home."
— Karen B., Harrow-on-the-Hill

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★ ★ ★ ★ ★
"The team was professional, responsive, and gave us great advice from the first meeting. Our loft conversion plans were approved quickly and we’re thrilled with the result."
— Naveen D., Pinner

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★ ★ ★ ★ ★
"Great value for money and excellent service. Draw Plans helped us through every step of our double-storey extension in Northolt. Highly recommended!"
— Rafiq A., Northolt

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Ready to transform your home with expertly designed plans that reflect your vision and budget?