HMO Conversion Drawings in Hammersmith & Fulham
Fixed-fee, MCIAT-chartered hmo conversion drawings for Hammersmith & Fulham homeowners — London Borough of Hammersmith & Fulham validation and local constraints handled from the start.
Hammersmith & Fulham is classic terraced West London. Long Victorian and Edwardian grids across Fulham and Shepherd's Bush make side-return and rear extensions, loft conversions and basements the most requested projects, and the council's design expectations for these house types are well established. Around them sit the distinctive red-brick 'Lion houses' of the Peterborough Estate, Edwardian mansion blocks, and newer riverside development along the Thames through Sands End, with Parsons Green, Brook Green, Hammersmith and White City each adding their own grain to the borough.
The controls that matter here are layered. The council operates a basement policy requiring a basement impact assessment for below-ground works, covering structural stability, drainage and groundwater, and Thames-side flood-zone considerations apply near the river. Strong conservation control runs across Bishops Park, Peterborough Estate, Brackenbury, Ravenscourt Park, Bradmore and Crabtree, and Article 4 directions remove permitted development for HMO conversions and, in conservation areas, some basement and frontage works. We confirm exactly which of these apply to your exact address before drawing.
We draw Hammersmith & Fulham planning applications to the borough's residential extension and basement guidance, coordinating structural calculations in-house so party-wall-sensitive terraces and below-ground schemes are handled cleanly and are complete when submitted. On the dense grids we check permitted development first and confirm it with a Lawful Development Certificate where a side-return or rear extension qualifies, and on the Peterborough Estate we design to the 'Lion houses' character. The fee is fixed and agreed up front, typically around 30% below an architect's charge for the same council-accepted drawings, with free redraws until the council approves. Most householder applications are decided within the statutory eight-week period once validated, so we submit validation-first.
Planning in Hammersmith & Fulham: what to know before you apply
Hammersmith & Fulham applies a basement policy requiring a basement impact assessment for below-ground works, and controls design closely within its conservation areas and on the Peterborough Estate. Article 4 directions remove permitted development for HMO conversions in parts of the borough. We confirm the constraints for your exact address before drawing.
Typical Hammersmith & Fulham housing stock
Long grids of Victorian and Edwardian terraces across Fulham and Shepherd's Bush, the distinctive red-brick 'Lion houses' of the Peterborough Estate, Edwardian mansion blocks, and newer riverside development along the Thames.
Areas we regularly draw for in Hammersmith & Fulham
Fulham · Shepherd's Bush · Hammersmith · Parsons Green · Sands End · Brook Green · White City
What the numbers say about Hammersmith & Fulham planning decisions
These are London Borough of Hammersmith & Fulham’s own reported figures, published by government rather than estimated by us. They are what we design against — a borough that refuses one householder application in five needs a different drawing package from one that refuses one in twenty.
Proving lawfulness in Hammersmith & Fulham
Certificates of lawful development and prior-approval outcomes decided by London Borough of Hammersmith & Fulham over eight quarters.
| Certificates of lawful development decided | 168 |
|---|---|
| Larger extensions cleared without a full application | 0 |
| Prior approval refused | 1 |
Source: Ministry of Housing, Communities and Local Government (PS1 district planning application statistics). Open Government Licence v3.0 Extracted 2026-08-16.
If London Borough of Hammersmith & Fulham refuses: appeal outcomes
Planning appeals against London Borough of Hammersmith & Fulham determined by the Planning Inspectorate, 2021–2026. Enforcement notices and withdrawn cases are excluded.
| Appeals determined | 332 |
|---|---|
| Allowed | 135 |
| Dismissed | 197 |
| Householder appeals allowedFrom 105 householder appeals. England average 36% | 42% |
Source: Planning Inspectorate appeals casework. Open Government Licence v3.0 Extracted 2026-08-16.
HMO Conversion Drawings for Hammersmith & Fulham homes: the package and the process
An HMO scheme is drawn against a schedule. Every bedroom is dimensioned with its usable floor area stated, shared kitchen and bathroom provision is counted against the number of occupants, and the layout has to hold up against the space standards the licensing team applies.
The fire strategy is drawn, not described: protected escape route, fire doors and their ratings, alarm coverage by room, and compartmentation between floors. Licensing and building control assess the same drawing set from different angles, so it has to satisfy both without contradiction.
Room count is a function of the existing plan. A large semi or detached house with generous rooms can meet the space standards without subdivision, while a narrow terrace usually cannot reach the same occupancy without creating rooms that fall below the minimum floor area.
C4 small HMO or sui generis large HMO — which applies to your property?
The distinction matters because it decides which rules apply. A small HMO housing three to six unrelated sharers who share amenities is Class C4. A large HMO of seven or more occupants is sui generis and always needs planning permission, since sui generis uses sit outside the permitted development system entirely. The line also shifts with occupancy — a property let to six sharers today can tip into sui generis territory the moment a seventh tenancy is signed, which changes the planning position even though nothing about the building itself has changed. We assess your proposed occupancy and layout against both definitions before drawing, so the application matches how the property will actually be let.
Do I need planning permission for an HMO conversion in London?
Converting a family home (C3) into a small HMO (C4) is technically permitted development under national rules, but a large number of London boroughs have made an Article 4 direction that removes this right across all or part of the borough — meaning a full planning application is required even for a small, compliant HMO. Article 4 directions vary street by street in some boroughs, so two similar houses a few doors apart can sit on opposite sides of the line. Any large HMO (sui generis) needs planning permission everywhere, regardless of Article 4. We check your specific address against the relevant borough's Article 4 direction before recommending a route, since guessing wrong wastes both time and application fees.
Mandatory and additional HMO licensing — what's required?
Most HMOs need a licence from the council, separate from any planning permission. A licence application typically has to demonstrate that the property meets fire safety, amenity and space standards, that gas and electrical installations are safety-certified, and that the landlord or managing agent is a fit and proper person to hold it.
Mandatory licensing
Applies to any HMO of five or more occupants forming two or more households, regardless of the number of storeys — a national requirement in every London borough.
Additional licensing
Many boroughs extend licensing to smaller HMOs, typically three or four occupants, across all or part of their area. We check the current scheme for your borough before you apply, since schemes and boundaries change.
| Factor | C4 small HMO (3–6 sharers) | Sui generis large HMO (7+) |
|---|---|---|
| Use class | C4 | Sui generis |
| Planning permission | Often needed due to Article 4 directions in most boroughs | Always needed |
| Licensing | Mandatory if 5+ occupants; additional licensing in many boroughs | Mandatory |
| Typical drawing package | From £1,400 | Full planning + building regs, from £2,200 |
HMO Conversion Drawings across Hammersmith & Fulham
HMO Conversion Drawings in Hammersmith & Fulham — FAQs
How much do HMO conversion drawings cost in London?+
Is HMO conversion permitted development in London?+
Do I need a licence as well as planning permission?+
Do I need an architect for an HMO conversion?+
How long do HMO conversion drawings take?+
Do I need planning permission for a side-return extension in Hammersmith & Fulham?+
Will I need a Basement Impact Assessment for a basement in Hammersmith & Fulham?+
What is special about the Peterborough Estate 'Lion houses'?+
How long does Hammersmith & Fulham take to decide?+
How much do planning drawings cost in Hammersmith & Fulham?+
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