01 · YOUR HOME ARCHITECTS
Residential architects in Hillingdon.
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 Hillingdon
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
Hillingdon
Fixed-fee architectural services for London homeowners, in Hillingdon and every other borough, from a RIBA Chartered practice. Hillingdon has one rule that catches almost everyone out: the shortcut that lets homeowners elsewhere build a deeper rear extension without a full application was withdrawn here in 2014. Anything over four metres needs proper permission. We establish exactly what your address allows first, then price each stage before it starts.
We work on the suburban semis here: rear extensions, loft conversions and outbuildings, and we check the depth question early because it changes the route and the cost. 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 31 conservation areas including Uxbridge and Windsor Street, Harefield, Ruislip Village, Eastcote, Ickenham and Cowley.
WHAT EXTRA RULES APPLY HERE?
A borough-wide rule confirmed in 2014 removed the quicker route for single storey rear extensions over four metres, so those need full permission. A borough-wide rule on shared houses was made in November 2025 but does not affect extensions.
WHAT KIND OF HOUSE IS IT?
Interwar and post-war suburban semis at Ruislip, Eastcote, Hayes and Uxbridge, with larger detached houses at Ickenham and Harefield, and newer housing near Uxbridge and Heathrow.
WHAT PEOPLE USUALLY BUILD HERE
Rear extensions, loft conversions and outbuildings. Worth knowing that a rear extension over four metres needs full permission in this borough, where elsewhere it might not.
ANYTHING ELSE THAT AFFECTS YOUR SITE
The Colne Valley in the west brings flood risk, with the Pinn and Yeading Brook also relevant. Around 43 per cent of the borough is green belt, and Heathrow safeguarding applies in the south. Reference: Local Plan Part 1, 2012 and Part 2, 2020, both under review.
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 Hillingdon?
For a deep rear extension, yes, and Hillingdon is unusual in this. Elsewhere in London a single storey rear extension over four metres can go through a light-touch notification. Here that route was withdrawn, so it needs a full application.
What is different about deep extensions here?
In most boroughs a single storey rear extension between four and six metres can be approved through a quicker notification process. Hillingdon withdrew that in 2014, so any rear extension over four metres needs a full planning application here.
Does green belt or flood risk affect me?
In the west, yes. The Colne Valley brings flood risk, with the Pinn and Yeading Brook affecting other areas. Around 43 per cent of the borough is green belt, and Heathrow safeguarding applies in the south, which can affect height.
07 · CONSULTATION
Book a consultation.
Thirty minutes with a registered architect. Free, and nothing is committed.