Drawings that turn a Tandridge house into self-contained flats — units sized to space standards, separated for sound and fire, and drawn to Tandridge District Council's conversion policy so the change of use is approved, delivered in days and revised free until your decision, with a free feasibility check first.
Tandridge District Council granted 87% of the householder planning decisions it made in its latest published year — level with the 87% England-wide householder average. Metropolitan Green Belt covers around 94% of the district, one of the highest proportions in England, so the presumption against inappropriate development dominates decisions, which is where a policy-literate drawing pack earns its keep. Its dominant Victorian (1837–1901), Edwardian (1901–1910), interwar (1918–1939) and postwar (1945–1970) housing stock sets the design brief on most streets.
Under Class B, a rear dormer stays permitted development up to 40m³ of added roof volume on a terrace or 50m³ on a semi-detached or detached house, while Class A allows a single-storey rear extension of 3m beyond the original rear wall on a terrace and 4m on a detached house before a full application is needed. Tandridge carries at least one Article 4 direction, and conservation areas including Oxted, Limpsfield and Godstone remove those rights outright, so we confirm your exact address before a line is drawn. A validated householder application in Tandridge is determined against an 8-week statutory target.
Oxted (the principal town with railway-era Victorian and Edwardian housing, twentieth-century growth and a conservation area), Caterham (the district's largest settlement, dense Victorian-to-postwar housing across Caterham-on-the-Hill and the Valley), Warlingham (a hilltop commuter village of largely interwar and postwar detached houses and semis), Godstone (a historic green-belt village around a pond and green with a conservation area), Limpsfield (an affluent AONB-edge village of period and large detached stock with a conservation area) and Lingfield (a historic rural village with a medieval core and a conservation area) — these are the Tandridge pockets our drawings cover most. Heritage designations here include Oxted, Limpsfield, Godstone, Bletchingley, Lingfield and Chaldon. Tandridge District Council weighs each proposal against the Tandridge District Core Strategy (adopted 2008) and Local Plan Part 2: Detailed Policies (adopted July 2014), where the Surrey Hills and High Weald National Landscapes (AONBs) affect the district around Limpsfield, Oxted and the south, adding national landscape protection. Converted flats appear around Oxted and Caterham, and none of them hold householder permitted-development rights.. On roofs the borough is dual-pitch tiled roofs on the railway-era terraces and villas and hipped roofs on the interwar and postwar semis, over Victorian and Edwardian and interwar railway-era housing in Oxted and Caterham, postwar suburban semis and detached houses, large detached houses on generous plots at Woldingham and Limpsfield and historic vernacular cottages in the green-belt villages of Godstone, Bletchingley and Lingfield.
Splitting one dwelling into several is the most policy-heavy job a house takes on, and Tandridge has the stock that invites it — the borough's Victorian and Edwardian and interwar railway-era housing in Oxted and Caterham, postwar suburban semis and detached houses, large detached houses on generous plots at Woldingham and Limpsfield and historic vernacular cottages in the green-belt villages of Godstone, Bletchingley and Lingfield include the large period houses and mansion-block flats that convert well, and streets already part-converted set the pattern. But because you are creating new homes, Tandridge District Council assesses the scheme against its housing and conversion policies, not just its extension guidance, so the internal layout carries planning weight it never would in a single house.
The layout has to satisfy several standards together. Each flat must meet the nationally described space standard for its number of bedrooms and bed spaces, with adequate light and outlook; the mix the council will accept is often set by policy, with some boroughs resisting too many small units or requiring a family-sized flat; and every unit needs its own amenity, plus cycle and refuse storage that works for the whole building. Metropolitan Green Belt covers around 94% of the district, one of the highest proportions in England, so the presumption against inappropriate development dominates decisions, which shapes what mix and layout will pass here.
Where the house sits in a conservation area — Oxted, Limpsfield, Godstone, Bletchingley, Lingfield and Chaldon among Tandridge's — external changes are read hard: new entrances, bin and bike stores, meter boxes and any subdivision visible from the street all have to respect the area's character. Tandridge has Article 4 directions removing permitted-development rights in parts of the district, which owners can check against the council's constraints map before assuming suburban PD rights, and its conservation areas such as Oxted, Limpsfield and Godstone add further character controls. We resolve the frontage and access before the internal layout is fixed.
Yes — a house-to-flats conversion is a change of use and always needs a full application to Tandridge District Council. The scheme has to satisfy each of these, and the drawings are where each is proven:
We lay out flats that meet the space standard, plan the sound and fire separation, and solve the entrances, bins and bike stores — then draw the change-of-use application to Tandridge District Council's conversion policy so the scheme is judged on a complete proposal, not bounced for a unit that is too small or a layout that cannot be separated.
Below is Tandridge District Council's real householder and residential decision record, drawn from official planning statistics and refreshed as new data lands. Tandridge grants a fair share of applications broadly in line with the national picture, with overwhelming Green Belt coverage and AONB protection the pressures on anything beyond modest householder work. Conversions are judged harder than extensions because they create new homes, so a scheme that proves space, mix and separation upfront is decided far more smoothly than one that leaves the officer to find the gaps.
Source: MHCLG planning application statistics (householder decisions, England, 1 April 2025 - 31 March 2026). Compare every borough on our London approval-rate league table.
Tell us about your project and get a fixed, no-obligation quote back within one working day. If you don't need planning permission at all, we'll tell you that too — for free.
The conversions that pass in Tandridge are the ones that treat the new homes as homes, not as the maximum number of doors that fit. Across Oxted, Caterham and Warlingham, the approved schemes give each flat a proper layout at or above the space standard, a sensible mix rather than a stack of studios, and amenity, bin and cycle provision that does not wreck the frontage. Overcrowding the building is the quickest route to refusal, and it rarely adds the value it promises.
The Surrey Hills and High Weald National Landscapes (AONBs) affect the district around Limpsfield, Oxted and the south, adding national landscape protection. We design the mix to what Tandridge District Council will accept, prove each unit meets the standard on the plan, and coordinate the planning layout with the sound and fire separation from the outset — so the scheme that gets permission is the same one building control can sign off, not a layout that has to be torn up at the next stage.
We convert houses and reconfigure flats on the period streets and mansion blocks across the borough. A few of the Tandridge neighbourhoods where conversions come up most often:
Flat conversion drawings for Oxted's the principal town with railway-era Victorian and Edwardian housing, twentieth-century growth and a conservation area — space-standard checked, separation-planned and drawn to Tandridge District Council's conversion policy.
Flat conversion drawings for Caterham's the district's largest settlement, dense Victorian-to-postwar housing across Caterham-on-the-Hill and the Valley — space-standard checked, separation-planned and drawn to Tandridge District Council's conversion policy.
Flat conversion drawings for Warlingham's a hilltop commuter village of largely interwar and postwar detached houses and semis — space-standard checked, separation-planned and drawn to Tandridge District Council's conversion policy.
Flat conversion drawings for Godstone's a historic green-belt village around a pond and green with a conservation area — space-standard checked, separation-planned and drawn to Tandridge District Council's conversion policy.
Flat conversion drawings for Limpsfield's an affluent AONB-edge village of period and large detached stock with a conservation area — space-standard checked, separation-planned and drawn to Tandridge District Council's conversion policy.
Flat conversion drawings for Lingfield's a historic rural village with a medieval core and a conservation area — space-standard checked, separation-planned and drawn to Tandridge District Council's conversion policy.
A conversion is judged on planning and building standards together. This is what each requires and who checks it.
| Requirement | What it means | Set by | Checked at |
|---|---|---|---|
| Change of use | Creating separate self-contained units | Planning policy | Tandridge District Council planning |
| Space standards | Minimum floor area per bedroom and bed space | National space standard | Tandridge District Council planning |
| Unit mix & amenity | Sensible flat sizes, light, outdoor space | Local housing policy | Tandridge District Council planning |
| Sound & fire separation | Part E acoustic and protected escape | Building regulations | Building control |
In conservation areas such as Oxted and Limpsfield, external changes to a Tandridge conversion — entrances, bin and bike stores — are assessed against the area's character.
A fixed process built around how Tandridge District Council judges conversions — most drawing sets are submission-ready within seven days of survey.
Send us your Tandridge postcode and the building. We test how many units realistically fit at the space standard, confirm the mix Tandridge District Council is likely to accept, and flag conservation, Article 4 and access constraints before you commit.
We measure the building accurately, because a conversion lives or dies on floor areas — every flat has to be proven against the space standard on a plan that matches the real property.
We design the flats to the space standard, coordinate the sound and fire separation and the entrances, bins and cycle stores, and draw the full change-of-use application to Tandridge District Council's conversion policy.
We lodge the application, manage validation and case-officer queries, and revise the drawings free until Tandridge District Council issues its decision.
Always. Splitting one house into two or more self-contained flats is a change of use, which is never permitted development, so a full application to Tandridge District Council is required. The council assesses the unit sizes, the mix and the amenity against its housing policy, as well as any external changes. A Tandridge conversion is judged more closely than an extension precisely because it creates new homes.
Each flat must meet the nationally described space standard, which sets a minimum floor area by the number of bedrooms and bed spaces — a one-bed one-person flat starts at 37–39 square metres, and larger units scale up from there. Tandridge District Council will refuse units below the standard. We test how many compliant flats a Tandridge building genuinely holds at feasibility, rather than drawing undersized units that cannot be approved.
Once you create separate units, building control requires Part E acoustic separation between them — the floors and party walls must be built or upgraded to resist airborne and impact sound — and a protected means of escape so each flat can be left safely in a fire. These are checked by Tandridge District Council's building control, separately from planning. We plan the separation into the layout from the start, so the planning design and the building-regs build are the same scheme.
Not necessarily. Many boroughs set policy on the mix — resisting schemes that are all studios or one-beds, and sometimes requiring a family-sized flat — to keep a range of homes. Tandridge District Council applies its own housing policy to a conversion, so the profitable-looking stack of small units is often the one that gets refused. We design the mix to what the borough will actually accept before drawing the application.
Usually yes. Once the Tandridge building is flats, each unit is normally sold or let on a lease, and a Land Registry-compliant lease plan is needed to define its extent. The measured survey behind the conversion drawings is the ideal base for those lease plans, so the same accurate record serves the planning application, the building-regs layout and the leases without measuring the building twice. Tandridge District Council is the decision-maker.
We price each Tandridge conversion on the number of units and the building's size and complexity, and send a fixed, no-obligation quote within one working day. It covers the feasibility, the change-of-use application drawings and free revisions until Tandridge District Council decides. Building-regs separation drawings and any council fee are quoted separately. Call 020 7864 7245 to start.
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