Great Missenden · Chiltern · Buckinghamshire
Our London team designs, engineers and builds house and flat projects in Great Missenden and Prestwood, working from the Finchley Road studio in Hampstead, NW3, with no premises in Buckinghamshire.
The village runs along the Misbourne valley, and its High Street, Church Street and the Missenden Abbey parkland sit inside one conservation area. Prestwood shares the civil parish and is covered on this page; the plans and Green Belt tests that apply across the area are set out on our Chiltern page.
Serving Great Missenden from our Hampstead studio · NW3 6DN
020 7101 3168
Great Missenden projects
01 Whole house
Rewiring, heating, plaster, joinery and windows renewed in an order that suits the age of the building. In the old village we repair flint, brick and clay tile before anyone talks about replacing them.
02 More space
Rear and side extensions drawn for article 2(3) land, where the permitted development limits are tighter than in most of England. Inside the built-up area the Local Plan's extension policies apply; beyond it, a Green Belt test.
03 Kitchens
A new kitchen in its present room, opened into the dining room or placed in an extension. Extract, circuits and any wall that comes out are designed alongside the cabinetry.
04 Bathrooms
Bathrooms renewed, shower rooms added and en suites fitted under sloping ceilings. Waste runs, fans and the wiring close to water are settled before a tile is chosen.
05 Roof space
Loft rooms for a valley where dormers go through a planning application, because roof additions are not permitted development on article 2(3) land. Dormers kept small and low, rooflights placed with care.
06 Below ground
Cellars and new basements weighed first against the Misbourne flood zones and the chalk groundwater. Where a plot is not suited to digging down, we say so plainly at feasibility.
07 Flats
Refurbishing the village's flats, whether in a purpose-built block, a converted building or above a shop. The lease, the freeholder and the floors shared with neighbours come first.
Great Missenden homes
Census 2021 counted 4,204 households in the Great Missenden ward. Of those, 2,104, or 50.0 per cent, lived in detached houses, while 858 lived in semi-detached houses and 782 in terraces.
Flats make up the smaller share. The same count put 366 households, or 8.7 per cent, in purpose-built blocks, 34 in converted or shared houses, 20 in other converted buildings and 35 in commercial buildings, the census category that takes in homes over a shop.
The Chilterns Conservation Board's design guide uses Great Missenden as its example of an old settlement that has become stretched along its valley, where many such villages kept a historic core around a green or along a high street. The 1997 Local Plan gives the High Street a pronounced historic character, mainly 18th- and 19th-century buildings with several listed among them, and notes that housing is more concentrated at its southern end.
For the archetypal Chilterns cottage the guide lists locally made red brick, flint and clay tiles, sometimes on an oak timber frame, under a pitched roof of plain clay tile or occasionally slate. The board's roofing note traces the red and orange of the region's peg-tiles to a broadly consistent geology.
Listing here is dense. The government's planning data service returns 58 list entries inside the conservation area boundary, among them the Grade I Church of Saints Peter and Paul and, at Grade II*, the George public house and the barn behind it, Abbey Farmhouse, and Elmhurst, whose entry is named for its flats.
At a first visit we date the building and each later alteration before anything is drawn. A timber-framed or flint-and-brick front, a Victorian rebuild and a post-war house each lead the work down a different route.
Sources: ONS/Nomis: Census 2021 TS044 Accommodation type, 2022 ward Great Missenden (E05013147); Chilterns Conservation Board: Chilterns Buildings Design Guide (published February 2010); Chiltern District Council: Chiltern District Local Plan, adopted 1 September 1997 (alterations 29 May 2001; consolidated September 2007 and November 2011); Chilterns Conservation Board: Chilterns Roofing Materials, Supplementary Technical Note (March 2007); planning.data.gov.uk (MHCLG, Historic England data): listed buildings within the Great Missenden conservation area (entity 44010519)
Approvals
Queried at the Ordnance Survey point for each village, Natural England's boundary layer returns the Chilterns for both Great Missenden and Prestwood. An area of outstanding natural beauty is article 2(3) land under the permitted development order, as a conservation area is. The policies that run across the whole area are on our Chiltern page; here is how they land on a house in the parish.
Applications for Great Missenden and Prestwood addresses are decided by Buckinghamshire Council, which still makes local decisions in the former Chiltern District local plan area on the 1997 Local Plan and the 2011 Core Strategy.
Our London team of in-house architects, designers and structural engineers, working with Hampstead Chartered Surveyors & Building Consultancy, draws the scheme and prepares the application. Building control goes to Buckinghamshire Council's building control service or to a private registered building control approver.
On article 2(3) land, Class A permitted development stops short of any extension beyond a side wall of the original house, of any extension of more than one storey beyond its rear wall, and of cladding the outside in stone, render, timber, plastic or tiles.
The larger single-storey rear extensions allowed elsewhere are not available either, so without an application a single-storey rear addition can reach no more than 4 metres beyond the rear wall of a detached house, or 3 metres for any other.
Class B, which lets a dormer go ahead without an application in much of England, does not apply at all where a house stands on article 2(3) land. Here a dormer means a planning application.
Smaller roof alterations fall under Class C instead, which does not cover anything protruding more than 0.15 metres beyond the slope of the original roof.
The Great Missenden Village Centre conservation area was designated in 1969 under the Civic Amenities Act 1967 and amended in 1992, when the Missenden Abbey parkland was added.
Policy CA1 refuses work that neither preserves nor enhances the area's special character or look, asks for natural materials matching those of the existing buildings and rules out synthetic ones. In most cases fully detailed plans are expected with an application.
The 1997 plan left the built-up area of Great Missenden and Prestwood out of the Green Belt, and the government's planning data service shows no Green Belt at either village point. The rest of the district around them is Green Belt.
Policy GB4 names rows of houses inside the Green Belt, among them London Road and Rookwood Way at Great Missenden, and Wycombe Road and Peterley at Prestwood. The extension tests for those rows and for houses further out are explained on our Chiltern page.
Sources: Natural England Open Data: Areas of Outstanding Natural Beauty (England), point query at the OS Open Names point for Great Missenden; Natural England Open Data: Areas of Outstanding Natural Beauty (England), point query at the OS Open Names point for Prestwood; legislation.gov.uk: Town and Country Planning (General Permitted Development) (England) Order 2015 (SI 2015/596), article 2 (latest available revised); legislation.gov.uk: GPDO 2015 (SI 2015/596), Schedule 1 Part 1, Article 2(3) land (latest available revised); ONS Open Geography Portal: Parish to Ward to Local Authority District (December 2019) Lookup in England and Wales (query); Buckinghamshire Council: Local Development Scheme, 3. Our current plans and documents (last updated 16 March 2026); legislation.gov.uk: GPDO 2015 (SI 2015/596), Schedule 2 Part 1, development within the curtilage of a dwellinghouse (latest available revised); Chiltern District Council: Chiltern District Local Plan, adopted 1 September 1997 (alterations 29 May 2001; consolidated September 2007 and November 2011); Buckinghamshire Council: Great Missenden Conservation Area map (Buckinghamshire Departments of Architecture and Planning 1969, as amended 1992); planning.data.gov.uk (MHCLG): conservation area entity 44010519, Great Missenden; planning.data.gov.uk (MHCLG): Green Belt point query at the OS Open Names point for Great Missenden; planning.data.gov.uk (MHCLG): Green Belt point query at the OS Open Names point for Prestwood
Local policy
Within the Chilterns Area of Outstanding Natural Beauty, Policy LSQ1 of the 1997 plan makes conserving and enhancing the natural beauty of the landscape the primary objective. National policy adds that development in a protected landscape should be limited in scale and extent, and sensitively located and designed.
The board's lighting guidance of June 2025 observes that traditional Chilterns buildings generally have small windows. Picture windows, glazed gables and floor-to-ceiling glazing, it says, are unlikely to be considered appropriate in the National Landscape unless the design mitigates artificial light spill.
It would also have roof lights avoided or kept to a minimum.
Great Missenden appears twice among the design guide's warnings: PVC frames and unusually shaped window openings rarely complement traditional buildings, and solar panels on a front elevation can spoil the look of a roof. For gutters and pipes the guide prefers black painted cast metal to uPVC.
Policy GC12, which names the Misbourne, refuses development that would harm the character of the river, its banks or land in its vicinity, particularly where it intrudes on the riverside landscape.
The board's chalk stream guidance, adopted in March 2025, records that the Environment Agency will oppose development less than 8 metres from a main watercourse that hampers its flood defence duties, and treats a 15m no-development buffer as the minimum for chalk streams in the National Landscape.
Policy CA2 refuses development that fails to preserve or enhance important views within, out of or into a conservation area. The test therefore reaches past the street frontage to how a rear addition or a roof change is seen from inside the area and on the way into it.
Sources: Chiltern District Council: Chiltern District Local Plan, adopted 1 September 1997 (alterations 29 May 2001; consolidated September 2007 and November 2011); MHCLG (GOV.UK): NPPF Chapter 19, Conserving and enhancing the natural environment (N1-6) (August 2026); Chilterns National Landscape (Chilterns Conservation Board): Chilterns National Landscape Boundary Review (page last updated 25 June 2025); Chilterns Conservation Board: Chilterns Lighting Planning Guidance (June 2025); Chilterns Conservation Board: Chilterns Buildings Design Guide (published February 2010); Chilterns Conservation Board: Chilterns Chalk Streams Planning Guidance (adopted by the Board 27 March 2025)
Prestwood
Prestwood has no parish of its own: the ONS parish-to-ward lookup lists the Prestwood and Heath End ward within Great Missenden parish, in the Chiltern area. Addresses in the parish carry HP16 or HP15, and HP16 is a postcode district that also takes in parishes such as The Lee, Wendover and Little Missenden.
The designations follow it. Prestwood's village point lies inside the Chilterns National Landscape and outside any conservation area, and its built-up area was left out of the Green Belt with Great Missenden's, so the article 2(3) limits on extensions and roofs apply here while the Green Belt test does not reach the village itself.
Its older fabric tells a different story. The board's flint note records that brick and flint cottages went up in numbers on the brick fields themselves, Prestwood among them, and the design guide says the village's linear pattern has been lost as building swamped the common. The 1997 plan picks out Kiln Lane, Hotley Bottom Lane and Moat Lane as a core where original cottages survive among later development.
Water needs its own check. The 2018 flood risk assessment defines an Area of Critical Drainage along Blacksmith Lane, one of the places it judges most at risk from surface water, groundwater and ordinary watercourses and where sustainable drainage should come first.
Sources: ONS Open Geography Portal: Parish to Ward to Local Authority District (December 2019) Lookup in England and Wales (query); ONS Postcode Directory via postcodes.io (ONSPD-derived): outcode HP16; ONS Postcode Directory via postcodes.io (ONSPD-derived): outcode HP15; Natural England Open Data: Areas of Outstanding Natural Beauty (England), point query at the OS Open Names point for Prestwood; planning.data.gov.uk (MHCLG): conservation area point query at the OS Open Names point for Prestwood; Chiltern District Council: Chiltern District Local Plan, adopted 1 September 1997 (alterations 29 May 2001; consolidated September 2007 and November 2011); planning.data.gov.uk (MHCLG): Green Belt point query at the OS Open Names point for Prestwood; Chilterns Conservation Board: Chilterns Flint, Supplementary Technical Note (May 2003); Chilterns Conservation Board: Chilterns Buildings Design Guide (published February 2010); Chiltern and South Bucks District Councils: Strategic Flood Risk Assessment Level 1 (November 2018)
Building fabric
Local brick, plain red clay tile and flint are very durable, the design guide says, and they give a building its familiar character. Harm more often comes from the repairs: cement-rich mortar sets too hard and, as the wall moves, tears the flint and brick around it.
Works to a listed building may need listed building consent, separately from any planning permission, and the design guide warns that consent may be needed before even a repair is attempted.
Where an old door has historical or architectural merit, the fire guidance asks for keeping and upgrading it to be investigated before it is replaced.
Detached houses account for 2,104 of the ward's 4,204 households. Where one stands on article 2(3) land, the side and two-storey rear extension limits apply to it whatever its age or size.
Missenden Abbey is listed at Grade II, and its grounds are on the register of parks and gardens at the same grade. The parkland came into the conservation area with the 1992 amendment.
Elmhurst, a Grade II* building inside the conservation area, is listed under a name that records its flats, and its north wing has a Grade II entry of its own. The census puts 35 of the ward's households in commercial buildings, the category that includes homes over a shop.
Sources: Chilterns Conservation Board: Chilterns Buildings Design Guide (published February 2010); GOV.UK (Planning Practice Guidance): When is permission required?; GOV.UK (MHCLG): Approved Document B (fire safety) volume 1: Dwellings, 2019 edition incorporating 2020, 2022, 2025 and 2026 amendments and forthcoming 2029 changes; ONS/Nomis: Census 2021 TS044 Accommodation type, 2022 ward Great Missenden (E05013147); legislation.gov.uk: GPDO 2015 (SI 2015/596), Schedule 2 Part 1, development within the curtilage of a dwellinghouse (latest available revised); planning.data.gov.uk (MHCLG, Historic England data): listed buildings within the Great Missenden conservation area (entity 44010519); Historic England: National Heritage List for England open data, Register of Parks and Gardens, list entry 1000605 (query); Chiltern District Council: Chiltern District Local Plan, adopted 1 September 1997 (alterations 29 May 2001; consolidated September 2007 and November 2011)
On site
Lowering the kerb for a new or wider driveway needs a vehicular access licence from Buckinghamshire Council, and the application carries a dimensioned drawing of an access no wider than 4.6m.
The old village packs its uses closely together. The 1997 plan describes a traditional mix of shops, businesses, restaurants, pubs and houses along the High Street, and centres the local shopping area on Station Approach.
Before work starts we agree where materials are set down, where a skip can stand and how neighbours keep their access, and we write that into the site plan alongside the order of trades.
Sources: Buckinghamshire Council: Apply for a dropped kerb licence; Chiltern District Council: Chiltern District Local Plan, adopted 1 September 1997 (alterations 29 May 2001; consolidated September 2007 and November 2011)
Scope
A quote is only as good as what is known when it is written, so we settle the planning route, the structure and the state of the fabric first, and price the work once all three are drawn.
We look at the building, its plot and its neighbours, and list the designations that touch it, from landscape and conservation area to listing and flood zone.
A measured survey follows, then options drawn by our architects and tested by our structural engineers against the fabric they will sit on.
We prepare the application the route needs, with heritage, flood or landscape statements where they are asked for, and the building regulations submission alongside it.
Our own site team builds what was drawn, and the building control inspections are booked as each stage is reached.
Our Hampstead base, serving Great Missenden
Our studio is in Hampstead on Finchley Road, at NW3 6DN. We serve Great Missenden from this office. Bring us the practical questions about your house, flat or bathroom and the result you want to achieve.
Contact the studio to discuss your brief and arrange the next step. If you already have drawings, a lease or planning correspondence, tell us what is available.
Book a feasibility visitThe Misbourne
The Misbourne rises at Mobwell Pond near Great Missenden and flows 27km through the Missendens, Amersham and the Chalfonts. The board's chalk stream guidance records that the river has been culverted at Great Missenden, among other places, and that its ecological status is assessed as poor.
According to the 2018 flood risk assessment it flows north to south through the village, with several Church Street properties in Flood Zone 2 and one in Flood Zone 3a. In a flood the river may overtop onto the floodplain, though depths are not expected to exceed 0.5 metres in the 1% annual chance event.
Its record of past flooding notes the river flooding the village, rising groundwater worsening blocked drains and surface water at Church Street, and surface water flooding in Great Missenden and South Heath. With little room for flood storage just upstream of Church Street, it says residents should be encouraged to sign up for the Environment Agency's flood alerts and warnings.
On a plot near any river we settle floor levels, drainage and the path water would take before the design is fixed, and we are frank when that answer rules a scheme out.
Outside Great Missenden, and in London rather than Buckinghamshire: Project example: Belsize Park, NW3. That project of ours is a Victorian townhouse of five storeys; its case study records a basement conversion, a rear extension and loft work, carried out together with a full refurbishment of the interior.
Sources: Chilterns Conservation Board: Chilterns Chalk Streams Planning Guidance (adopted by the Board 27 March 2025); Chiltern and South Bucks District Councils: Strategic Flood Risk Assessment Level 1 (November 2018); Hampstead Renovations: Belsize Park Gardens, NW3 case study
Great Missenden questions
Yes. Natural England's boundary layer returns the Chilterns at the points for both Great Missenden and Prestwood, which makes a house there article 2(3) land. Roof additions under Class B are then not permitted development, and an extension beyond a side wall, or of more than one storey to the rear, needs planning permission.
Not if the conversion adds a dormer or any other roof extension, because Class B does not apply on article 2(3) land. Works affecting only the interior are not development, and rooflights can fall within Class C, but listing or the conservation area can change the answer, so we check the house before anything is drawn.
It may be if it stands in the old village. The area was designated in 1969 and amended in 1992 to take in the Missenden Abbey parkland, and the 1997 plan describes the High Street as part of it. Prestwood's village point falls outside it. We check each address against the published boundary at the feasibility stage.
Possibly. The 2018 flood risk assessment places several Church Street properties in Flood Zone 2 and one in Flood Zone 3a. The Environment Agency's flood map for planning gives the zone for a particular site, and we read it before an extension, basement or ground-floor change is designed.
Yes. Prestwood lies within Great Missenden civil parish and inside the Chilterns National Landscape, and its built-up area sits outside the Green Belt together with Great Missenden's, so the extension and roof limits on this page apply there too. Its village point is outside the conservation area.
Beyond the built-up area the 1997 plan's Green Belt policies apply. For the rows of houses named in Policy GB4, Policy GB12 turns to the ordinary extension policies; elsewhere Policy GB13 permits extensions that are subordinate to the original dwelling and not intrusive in the landscape. National policy also measures any increase against the building as it stood on 1 July 1948, or as first built if later. Our Chiltern page sets out each test.
You choose between Buckinghamshire Council's building control service and a private registered building control approver. Our London team of in-house architects, designers and structural engineers, with Hampstead Chartered Surveyors & Building Consultancy, prepares the submission from the Finchley Road studio in Hampstead, NW3, and planning applications go to Buckinghamshire Council.
See how Great Missenden fits within our wider Buckinghamshire pages.
Every service page we publish for Great Missenden.