Loft conversion in Richmond upon Thames
Do you need planning permission for a loft conversion in Richmond upon Thames? Sometimes not. Nationally the volume limit for added roof space is 40 cubic metres on a terraced house and 50 cubic metres on a semi-detached or detached house, taking earlier enlargements into account.[1] With 85 conservation areas in the borough, it is worth checking early whether yours is one of them.[2]
Local rules for a loft conversion in Richmond upon Thames
- In Richmond, dormers and roof extensions must not project above the ridgeline and should not dominate the original roof, with a significant area of existing roof left either side. Front roof extensions are undesirable.[3]
- Alongside the national requirements, the council asks for local items where triggered: CIL Form 1, a heritage statement, an arboricultural impact assessment, a fire safety strategy or exception statement, or a structural impact assessment, any of which can apply to loft work.[4]
How Richmond upon Thames handles these applications
Of the 1,302 householder applications that Richmond upon Thames decided between July 2025 and June 2026, 217 were refused and 1,085 granted, which is 83.3%.[5] The count includes every kind of householder work. The share decided within 8 weeks, which we worked out from the same table and which excludes applications on an agreed timescale, was 98.7%.[5]
The borough has 85 conservation areas.[2] Whether a property sits inside one is a sensible first check. The national Planning Data platform holds 814 listed-building records for Richmond upon Thames, 128 of them Grade I or II*; the data is published voluntarily and may be incomplete.[6]
Average prices in August 2026 were £931,524 for a terraced home and £1,208,719 for a semi-detached one, the two types where a loft conversion is most often considered.[7]
What it costs
Our fixed price for a loft conversion is £1,500 (VAT_WORDING_TBC), and the fee charged by the council is paid on top.
Asking for the proposal costs nothing, and ordering is a separate step.
Charges and fees that come from the council or from national rules:
- A pre-application enquiry for roof and loft alterations to a non-listed dwelling costs £190 in Richmond.[8] No meeting with a planning officer is included, and the council's page does not state the VAT treatment, so check with the council.[8]
- Separately, the statutory planning fee set nationally for a householder extension or alteration is £548 from 1 April 2026.[9]
What the work looks like
Questions people ask
What share of householder applications does Richmond upon Thames approve?
For the 12 months to 30 June 2026 the PS2 table gives a householder grant rate of 83.3% in Richmond upon Thames.[5] It is an average across every kind of householder application.
What do Richmond's dormer rules say?
Dormers must not project above the ridgeline or dominate the original roof, and a significant area of roof should be left either side.[3]
Will a loft conversion in Richmond upon Thames definitely get approved if Plandome prepares it?
No. The decision belongs to Richmond upon Thames, and nobody outside the council can promise a result.
Does this page replace checking my own property?
No. It is general information, drawn from the sources listed below and last checked on 14 November 2026. Rules can depend on your address, so check it before you rely on it.