Subordinate rear extension on a period cottage in Harefield village UB9, Hillingdon

Harefield · UB9 · Hillingdon

Architectural Drawings in Harefield UB9

Fixed-fee, MCIAT-chartered architectural drawings for Harefield (UB9) homeowners — London Borough of Hillingdon validation and local constraints handled from the start.

Harefield (UB9) is one of Hillingdon's most rural neighbourhoods — a historic village core wrapped in Green Belt on the northern edge of the borough — and that setting, rather than a standard suburban street pattern, drives how extensions are assessed here. Schemes that keep additions subordinate and in-keeping with the village grain are the ones that move smoothly through the council.

The Harefield Village conservation area protects the scattered building layout, the green and the countryside views, so rooflines, materials and the openness between buildings are treated as part of the heritage. We check both the conservation-area boundary and the surrounding Green Belt designation before advising on what a UB9 plot can realistically support.

Proposed floor plan

Harefield UB9

Harefield (UB9) — planning at a glance

Council: London Borough of Hillingdon
Postcode district: UB9
Planning portal: View the Hillingdon planning portal
Housing stock: A dispersed village centre of cottages and period houses around the green and St Mary's Church, mixing medieval and post-medieval buildings with Victorian and 20th-century infill, set against open countryside on the borough's northern edge.
Article 4: Hillingdon holds confirmed Article 4 directions borough-wide (including the Class AA / AB direction on upward extensions), but for typical Harefield householder projects the rural Harefield Village conservation area and Green Belt setting are the controls that actually shape a scheme, not those PD-specific directions.
Conservation: Harefield Village
Sample streets: High Street · Church Hill · Park Lane · Rickmansworth Road
Local constraints: Harefield Village conservation area protecting the historic rural village character, scattered building pattern and views out to open countrysideExtensive Green Belt surrounding the village, which limits the scale and footprint of extensions and outbuildings on many plotsA rural, low-density grain where large or suburban-style extensions are resisted in favour of subordinate, in-keeping additions

Planning in Harefield (UB9): what to know before you apply

UB9 combines two of the strongest planning controls in the borough — a rural conservation area and widespread Green Belt — so extension scale and siting matter more here than almost anywhere else in Hillingdon. We design Harefield schemes to read as modest, subordinate additions that respect the village setting, which is what the council looks for.

Typical Harefield housing stock

A dispersed village centre of cottages and period houses around the green and St Mary's Church, mixing medieval and post-medieval buildings with Victorian and 20th-century infill, set against open countryside on the borough's northern edge.

Streets we regularly draw for in Harefield

High Street · Church Hill · Park Lane · Rickmansworth Road

Architectural Drawings for Harefield (UB9) homes: the package and the process

Every architectural drawings we prepare for an Harefield property is drawn to London Borough of Hillingdon’s validation standards and tuned to the UB9 constraints above. Here is what the drawing package covers and how the process runs from first survey to approval.

Architectural drawings are the overarching technical design for a building project — the master set from which planning drawings, building regulations drawings and construction details all flow. Where a planning application is one regulatory hurdle, the architectural drawing package is the complete design record of your home improvement.

DrawingsDirect provides that full service through MCIAT-chartered architectural technologists: the same professional, council-accepted output as an architecture practice, coordinated with structural engineering in-house, at a fixed fee.

What do architectural drawings include?

A complete architectural package carries your project from idea to buildable detail, so builders quote accurately and councils and Building Control approve confidently.

Concept and feasibility sketches
Planning drawings for the local authority
Building regulations drawings with construction detail
Structural drawings and calculations
Schedules, specifications and material annotations

Architect or architectural technologist — which do I need in London?

For residential planning and building regulations work, an MCIAT-chartered technologist produces the same council-accepted drawings with the same professional accountability as an architect, typically at a lower fee. Councils do not score applications by the author's job title — they score the drawings. The table below compares the two on the factors homeowners actually care about.

Chartered architectural technologist vs traditional architect for a London home project
Factor	Architectural Technologist	Architect
Council-accepted drawings	Yes	Yes
Typical fee	~30% lower	Higher
Structural coordination	In-house	Often outsourced
Typical drawing turnaround	~7 days	Several weeks
Best for	Extensions, lofts, conversions	Bespoke new-build design

Also in Harefield UB9

Planning Permission Planning Drawings Building Regulations Drawings Loft Conversion Drawings House Extension Drawings Architectural Drawings across Hillingdon Architectural Drawings across London

FAQ

Architectural Drawings in Harefield UB9 — FAQs

Are architectural drawings the same as planning drawings?+

Planning drawings are a subset of the architectural package — the drawings used specifically for a planning application. The architectural drawings also include building regulations and construction detail.

Will a technologist's drawings be accepted by my council?+

Yes. MCIAT-chartered technologists are a recognised professional body and their drawings are routinely accepted and approved by every London borough.

Can you take my project all the way to construction?+

Yes — from feasibility through planning, building regulations and structural detail, to a set your builder can price and build from.

Do I own the architectural drawings you produce?+

Yes. The drawings are yours to use, and any competent builder can price and build from them — you are never locked into a single contractor by the drawing package.

Can I commission just the planning stage for now?+

Yes. Many homeowners take a project to planning approval first and add the building regulations and construction package later. We stage the fee to match, so you only pay for the stage you need.

Do I need planning permission for a loft conversion in Hillingdon?+

Hillingdon's Metro-land semis and detached houses in Ruislip, Eastcote and Ickenham suit hip-to-gable and dormer lofts, which frequently qualify as permitted development within the volume limits. The exceptions are the conservation areas — Ruislip Village, Uxbridge and Northwood — and green-belt land toward the Colne Valley. We check your address and can confirm permitted development with a Lawful Development Certificate.

How does the Colne Valley green belt affect my Hillingdon project?+

On green-belt properties toward the western edge of the borough, extensions are assessed against strict limits on disproportionate additions to the original dwelling. It does not rule out an extension, but scale and siting matter and the case must be evidenced carefully. We confirm whether your property is green belt and design a scheme that stays within policy.

Does proximity to Heathrow affect my plans?+

It can toward the south of the borough, where aircraft-noise considerations may influence habitable-room and glazing design. We evidence these considerations within the application where they apply so the council can validate and approve without repeated revisions.

How long does Hillingdon Council take to decide?+

Hillingdon determines most householder applications within the statutory eight-week period once validated; green-belt and conservation cases can involve additional consultation. We prepare Hillingdon submissions to the council's validation checklist to avoid the drawing queries that cause most delays.

How much do planning drawings cost in Hillingdon?+

We work to a fixed fee agreed upfront, usually around 30% below an architect's charge for the same council-accepted drawings, with free redraws until Hillingdon approves. A dormer loft, a suburban extension and a green-belt case differ in the evidence required, so we confirm the fee once we understand your project rather than billing by the hour.

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