Loft
conversions
in Virginia Water, GU25
Designers, Architects, Engineers & Builders Under One Roof.
One Studio. One Contract. One Team.
Rooflight and dormer loft rooms for Virginia Water houses and bungalows, with the stair, the new floor and the escape route designed in, and the roof shape checked against the village design code.
Roof shape drives a loft scheme. The design code for Trumps Green says proposals may take an open gable, dormer or hipped form and that other roof forms have no precedent there, and the Stroude Valley code prefers hipped or cross hipped roofs for new housing on Stroude Road, so a hip-to-gable change or a large box dormer needs testing against the code before it is drawn.
On a bungalow the loft can become a whole new floor, so the size test on a Green Belt plot, and the fire safety of the new floor on any plot, come to the front of the design.
When a Virginia Water loft needs no application
Among the limits in Class B of the national permitted development order, the roof space may grow by no more than 40 cubic metres on a terrace house or 50 cubic metres on any other house, and nothing may project beyond a front roof slope that faces a highway.
The order also sets conditions: exterior materials of similar appearance to the house, the enlargement kept at least 0.2 metres back from the eaves where practicable, and any window in a side wall or side roof slope obscure-glazed.
Class B does not apply on article 2(3) land, which includes conservation areas, so we check the council's records for the address before relying on it.
The council's Design SPD puts the position plainly: loft conversions may not require planning permission, but are likely to require approval under the Building Regulations.
Sources: legislation.gov.uk (The National Archives): The Town and Country Planning (General Permitted Development) (England) Order 2015, Schedule 2, Part 1 (development within the curtilage of a dwellinghouse) - latest available (revised); legislation.gov.uk (The National Archives): GPDO 2015, Article 2 (Interpretation) - defines 'article 2(3) land'; legislation.gov.uk (The National Archives): GPDO 2015, Schedule 1, Part 1 - Article 2(3) land; Runnymede Borough Council: Runnymede Design Supplementary Planning Document (adopted July 2021)
The Green Belt test and the design code on a Virginia Water roof
On a Green Belt plot, Policy EE14 lists what the council weighs, including floorspace with the space under roofs, and changes in mass, bulk and height with roof form changes among them. Work done earlier under permitted development forms part of the planning history it considers.
That means a loft built without an application still counts when a later extension is assessed. We explain the borough-wide test on our Runnymede page and add up the existing additions for your plot before designing the roof.
In Trumps Green the code says proposals may take an open gable, dormer or hipped roof form, other forms having no precedent in the area, and looks for no more than two storeys unless a contextual analysis shows a different height would enhance or complement the townscape. For new housing on Stroude Road, hipped or cross hipped roofs are preferred.
The council's Design SPD asks that bulky dormers are avoided, that dormers sit down from the main ridge and stop short of the eaves, and that they do not overhang, wrap around or rise above the existing ridge. It prefers rooflights where possible, seeks conservation rooflights flush with the roof, and asks for particular care on corner plots.
Sources: Runnymede Borough Council: Runnymede 2030 Local Plan (adopted document, PDF); Runnymede Borough Council: Virginia Water Neighbourhood Plan 2024-2035, adoption version, with the Virginia Water Design Code (Appendix 1); Runnymede Borough Council: Runnymede Design Supplementary Planning Document (adopted July 2021)
Escape, doors and floors in a Virginia Water loft
Where a loft conversion adds a new storey above 4.5m, Approved Document B asks for the full escape route to be addressed, with fire resisting doors of at least E 20 and partitions of at least REI 30, upgrading existing doors where necessary.
The guidance also sets out an alternative package that includes sprinkler protection to the open-plan areas, which can suit an open-plan ground floor that would be hard to enclose. Where existing doors have historical or architectural merit, the guidance asks for the possibility of keeping and, where necessary, upgrading them to be investigated.
Adding a storey to a two-storey house also means new floors with a minimum REI 30 fire resistance, though the guidance lets the integrity and insulation performance be reduced where only one storey is added, with no more than two habitable rooms and a total area of no more than 50m2.
We fix the stair line early, because it sets the headroom over the new flight and the shape of the landing below, and we show the protected route from the loft room to the front door on the drawings sent to building control.
Building control and the party wall on a Virginia Water loft
Owners in Runnymede may appoint a private Registered Building Control Approver, regulated by the Building Safety Regulator, in place of the council's own team. The council keeps a register of approvers but cannot intervene in work they oversee.
On a semi-detached or terraced house, new steels bearing into the shared wall mean telling the neighbours first. Building control does not deal with party wall matters, which are for civil law.
Policy VW7 asks alterations to be designed with energy reduction in mind, so the new roof is insulated to the current standard and the eaves spaces left outside the new room are insulated as well.
Outside Virginia Water, and in London rather than Surrey: Holland Avenue, Wimbledon SW20. That completed project of ours combined a loft conversion, a double-storey extension to the rear and side, and a whole-home refurbishment, as its case study describes.
Sources: Runnymede Borough Council: About building control - What is building control; GOV.UK: Party walls and building work; Runnymede Borough Council: Virginia Water Neighbourhood Plan 2024-2035, adoption version, with the Virginia Water Design Code (Appendix 1); Hampstead Renovations: Holland Avenue, Wimbledon SW20 case study
Loft Conversions in Virginia Water: Questions
Is a loft conversion in Virginia Water permitted development?
Often, within the order's limits: among them, the roof space may grow by no more than 50 cubic metres on a detached or semi-detached house, or 40 on a terrace house, nothing may project beyond the front roof slope facing the road, and the house is not on article 2(3) land. Building regulations approval is still likely to be needed.
Does Article 2(3) land change a loft conversion in Virginia Water?
Yes, if the house is on it. Class B roof enlargements are not permitted development on article 2(3) land, which takes in conservation areas, areas of outstanding natural beauty, National Parks, the Broads and World Heritage Sites, so a dormer there needs planning permission. We check the address against the council's records first.
How does the Green Belt test treat a loft in Virginia Water?
On a Green Belt plot, Policy EE14 takes into account floorspace including the space under roofs, and changes in mass, bulk and height including roof form changes, when it assesses whether additions are disproportionate over and above the size of the original building. Earlier permitted development work forms part of the history it weighs.
What fire safety does a Virginia Water loft conversion need?
Where the conversion creates a storey above 4.5m, the guidance says the full escape route should be addressed, with fire resisting doors and partitions, upgrading existing doors where needed. An open-plan ground floor can be handled through the alternative approach that includes sprinklers. New floors should have a minimum REI 30 fire resistance, with a reduced integrity and insulation rating allowed for a small single-storey addition that meets the guidance's conditions.
Can a loft conversion in Virginia Water use a registered building control approver instead of the council?
Yes. The council route is Runnymede Borough Council's in-house Building Control team, for Runnymede Borough Council, until 31 March 2027, and from 1 April 2027 the provider named by West Surrey Council. Instead, you may appoint a private Registered Building Control Approver regulated by the Building Safety Regulator, and the council cannot then intervene in that work.
What can a feasibility visit for a loft conversion in Virginia Water tell me?
Whether there is enough head height under the ridge, where a stair could land without losing a bedroom, whether the roof shape suits rooflights or a dormer, and whether the scheme is likely to need an application. We measure the roof void and photograph the structure so the next drawings start from fact.
Book a free feasibility visit
Request a visit
Completed renovation project example
