01 · YOUR HOME ARCHITECTS
Residential architects in Harrow.
Fixed fees, clear process.
Design, planning, building regulations and the contract on site, from a RIBA Chartered practice. Every service priced before you commit.
PLANNING AUTHORITY
London Borough of Harrow
02 · THE PRACTICE
Design to completion, from a RIBA Chartered practice.
Your Home Architects is a service offered by Vision and Design, RIBA Chartered architects based in London. We set it up so London homeowners can see the whole job in advance, with the price for each service agreed before that service begins.
Architects Registration Board
Architect is a title protected by law in the United Kingdom. Only someone on the ARB register may use it. Registration requires seven years of education and examination, is renewed annually, and can be removed for professional misconduct.
ARB REGISTERED ARCHITECTS
RIBA Chartered practice
Registration is held by the practice, not just an individual. It requires a registered architect in charge, professional indemnity cover, a written complaints procedure and continuing professional development.
VISION + DESIGN LTD
Why the title matters to you
An architectural technologist or designer may be excellent, but is not accountable to a regulator. V+D are Chartered Architects, giving you a complaints route, a disciplinary body and mandatory professional indemnity cover.
COVER DETAILS ON REQUEST
03 · THE SERVICE
How we help homeowners in
Harrow
Fixed-fee architectural services for London homeowners, in Harrow and every other borough, from a RIBA Chartered practice. Harrow is Metro-land: 1930s semis at Pinner, Stanmore, Kenton and Rayners Lane, whose roof shape happens to suit a loft conversion better than almost any other house type. The council approves fewer applications than the national average, so the design case matters. We establish exactly what your address allows first, then price each stage before it starts.
We work on the Metro-land semis here: hip to gable loft conversions, rear extensions and porches, designed to sit within the pattern of the street. Each stage priced before it begins.
04 · PUBLISHED FEES
Fixed fee, stage by stage.
Start with a free report. Instruct the next service only when you want to. Priced on how constrained the site is, not on how ambitious you are.
Straightforward work, straightforward pricing
01 · PLANS
Simple plans from only £1,450
• Permitted development only
• Plans and certificate application
• One design revision included
View full fees
02 · PLANS + REGS
Plans + building regulations from £2,950
• Everything in Simple plans
• Building regulations application
• Builder-ready technical drawings
View full fees
Not sure whether your project needs planning permission? The free report answers that first, at no cost.
Everything else, priced by band
BAND A
Unrestricted property · from £2,500
• Householder Application
• No listing or conservation designation
• From £2,500 for design and planning
View band fees
BAND B · MOST COMMON
Constrained property · from £4,000
• Conservation area
• More detailed planning coordination
• From £4,000 for design and planning
View band fees
BAND C
Complex property · from £5,500
• Listed, complex, or highly constrained
• Specialist consent and coordination
• From £5,500 for design and planning
View band fees
A short conversation about your house fixes the figure for each stage before anything starts.
*Every service is separately instructed and separately priced. Most projects begin with the free report.
**Structural engineers, party wall surveyors, Building Control and builders are appointed directly by you and are not included.
05 · START WITH YOUR ADDRESS
A free property report for London homeowners.
Enter your address and we will tell you whether your home is listed, sits in a conservation area or falls under an Article 4 direction, what you are allowed to build without planning permission, and what your neighbours have already been allowed to build.
Free · Within 48 hours · No obligation
What your report covers
• Listed status, conservation area and Article 4 direction
• What you can build without planning permission, specific to your house
• Your likely planning route
• Existing footprint, plot outline and planning history
• Flood zone, tree preservation orders and decided applications nearby
Download a sample report.
See the address check before you ask us to prepare one for your home.
06 · YOUR ADDRESS, NOT THE AVERAGE
What we check before anything is drawn.
IS YOUR STREET PROTECTED?
Around 29 conservation areas plus four Local Areas of Special Character, including Harrow on the Hill, Pinner village, Pinner Hill, Stanmore, Harrow Weald and Mount Park Estate.
WHAT EXTRA RULES APPLY HERE?
Around fifteen sets of extra rules apply, with directions made in 2021 for Pinner Hill, Mount Park Estate and South Hill Avenue among others. Separate rules on shared houses apply in some wards but do not affect extensions.
WHAT KIND OF HOUSE IS IT?
Dominated by 1930s Metro-land semis at Pinner, Stanmore, Kenton and Rayners Lane, with Edwardian streets and the historic core at Harrow on the Hill.
WHAT PEOPLE USUALLY BUILD HERE
Hip to gable loft conversions, rear extensions and front porches. The 1930s semi with a converted loft is the standard Harrow project.
ANYTHING ELSE THAT AFFECTS YOUR SITE
Significant green belt to the north and west, and four Local Areas of Special Character where spacing and greenery are protected. Reference: Core Strategy 2012 with a new Local Plan submitted for examination February 2025, Residential Design Guide SPD and Small Sites Design Code SPD.
07 · CHECK IT YOURSELF
Estimate your London extension cost.
Estimate your full project cost — build, interior fit-out, regulatory and professional fees, contingency and VAT — calibrated for Inner and Outer London.
London extension cost calculator
Open calculator
08 · COMMON QUESTIONS
Do I need planning permission to extend in Harrow?
In the protected areas, yes. Harrow has around fifteen sets of extra rules across its conservation areas and special character streets. Outside those, on the Metro-land semis, the usual allowances generally apply.
Why are loft conversions so common here?
Because the 1930s semi has a hipped roof, sloping on three sides. Squaring off the side into a gable creates enough headroom for a proper bedroom and bathroom, and on most Harrow streets it can be done without a planning application.
What is a Local Area of Special Character?
A local designation for streets valued for their spacious, leafy character rather than their architecture. It does not remove your rights outright, but proposals are assessed against the spacing between houses, so filling the plot is harder to justify.
07 · CONSULTATION
Book a consultation.
Thirty minutes with a registered architect. Free, and nothing is committed.