
Full-plans building regulations drawings for Clandon & Horsley — the technical construction set covering structure, fire safety, insulation and Part L, drawn to satisfy building control so your builder can price and build with certainty, delivered in days and revised free until sign-off, with a free project check first.
Guildford Borough Council granted 86% of the householder planning decisions it made in its latest published year — 1 point below the 87% England-wide householder average. Clandon & Horsley contains East Clandon, East Horsley, West Clandon conservation areas (East Clandon designated 1973), so materials, fenestration and roof form are assessed against the appraisal, which is where a policy-literate drawing pack earns its keep. Its dominant interwar (1918–1939) and postwar (1945–1970) housing stock sets the design brief on most streets.
Class A and Class B set the thresholds — a rear dormer to 40m³ on a terrace or 50m³ on a semi or detached, and a single-storey rear extension to 3m on a terrace or 4m on a detached house — beyond which Guildford Borough Council needs a full application. In conservation areas such as East Clandon, East Horsley and West Clandon those rights are removed, so we confirm your exact address before a line is drawn. A validated householder application in Clandon & Horsley is determined against an 8-week statutory target.
East Clandon (conservation area designated in 1973), East Horsley (conservation area designated in 1973), West Clandon (conservation area designated in 1973), West Horsley (conservation area designated in 1973), West Clandon (civil parish within Clandon & Horsley), West Horsley (civil parish within Clandon & Horsley), East Clandon (civil parish within Clandon & Horsley) and East Horsley (civil parish within Clandon & Horsley) — these are the Clandon & Horsley pockets our drawings cover most. Heritage designations here include East Clandon, East Horsley, West Clandon and West Horsley. Guildford Borough Council weighs each proposal against the adopted Guildford local plan and Guildford Borough Council's design guidance for householder work, where the 3,800 homes here are 22% 1930-1939, 14% 1955-1964, 13% 1945-1954, which is what sets the realistic roof and rear-projection options. On roofs the borough is hipped roofs with shallow pitches typical of 1930s building and shallow gabled roofs typical of that period's building, over 1930s semi-detached and detached houses (22% of 3,800 homes), late-1950s and early-1960s houses (14%) and early postwar houses (13%).
Heritage designation is the single biggest variable in Clandon & Horsley, and it is address-specific: East Clandon (conservation area designated in 1973), East Horsley (conservation area designated in 1973), West Clandon (conservation area designated in 1973) and West Horsley (conservation area designated in 1973). Inside those boundaries permitted development is curtailed and Guildford Borough Council assesses materials, window detail and roof form against the area's own appraisal, so a scheme that would be waved through two streets away can need a full application here.
Beyond the designated areas, Clandon & Horsley takes in West Clandon, West Horsley, East Clandon and East Horsley. No Article 4 direction is recorded for Guildford Borough Council, but Clandon & Horsley's 4 conservation areas still limit permitted development on those streets.
On stock, Clandon & Horsley is 1930s semi-detached and detached houses (22% of 3,800 homes), late-1950s and early-1960s houses (14%) and early postwar houses (13%) — which is why hipped roofs with shallow pitches typical of 1930s building and shallow gabled roofs typical of that period's building govern what a loft or rear projection can realistically be. Guildford Borough Council decided 828 householder applications in the latest published year and granted 86%, with 31% issued inside the eight-week target. We work from the council's own published record.
The full build-period split for Clandon & Horsley runs pre-1900 8% (320 homes), 1900-1918 2% (80 homes), 1919-1929 7% (260 homes), 1930-1939 22% (830 homes), 1945-1954 13% (510 homes), 1955-1964 14% (540 homes), 1965-1972 6% (210 homes), 1973-1982 5% (200 homes), 1983-1992 3% (120 homes), 1993-1999 2% (80 homes) and 2000-2008 5% (200 homes). That distribution is why pre-1900 detailing dominates the drawings here, and it is measured from council-tax records rather than assumed from the street name.
Guildford Borough Council also decides for Ash Vale, Castle, Normandy & Pirbright, Pilgrims, Send & Lovelace, Shalford, Stoke and Tillingbourne, so a decision in Clandon & Horsley sits inside a wider pattern of decisions we track across the same authority — useful when an officer cites a precedent from the next area over.
Published figures for Clandon & Horsley and Guildford Borough Council. These are the numbers that decide what is realistic on your street, so we work from them rather than from national averages.
| Measure | Clandon & Horsley |
|---|---|
| Dwellings recorded | 3,800 |
| Built pre-1900 | 320 (8%) |
| Built 1900-1918 | 80 (2%) |
| Built 1919-1929 | 260 (7%) |
| Built 1930-1939 | 830 (22%) |
| Built 1945-1954 | 510 (13%) |
| Built 1955-1964 | 540 (14%) |
| Built 1965-1972 | 210 (6%) |
| Built 1973-1982 | 200 (5%) |
| Built 1983-1992 | 120 (3%) |
| Built 1993-1999 | 80 (2%) |
| Built 2000-2008 | 200 (5%) |
| Built before 1919 | 11% |
| Built 1919–1939 | 29% |
| Built 1945–2008 | 49% |
| Conservation areas in Clandon & Horsley | 4 (East Clandon, East Horsley…) |
| Conservation areas district-wide | 41 |
| Article 4 directions recorded | 0 |
| Householder applications decided | 828 |
| Householder applications granted | 86% |
| Decided within 8 weeks | 31% |
Dwelling stock from VOA council-tax data at 31 March 2025; conservation-area and Article 4 counts from planning.data.gov.uk (MHCLG); decision figures are Guildford Borough Council's own, from MHCLG live table PS2 for the year to 31 March 2026.
Planning permission decides whether you can build; the Building Regulations decide that what you build is safe, warm and sound. They are two separate approvals, run by different bodies, and a Clandon & Horsley project usually needs both. The building regulations set is the technical layer beneath the planning drawings — construction sections, structural details, insulation build-ups and fire-safety provisions that a builder works from and a building control surveyor checks against the approved documents.
In practice that means Part A structure — beam and foundation details with the structural calculations behind them; Part B fire — escape, protected routes and, in a loft, a fire door and mains-linked alarms; Part L conservation of fuel and power — U-values, insulation and airtightness; plus drainage, ventilation and stairs. On Clandon & Horsley's stock, which runs to 1930s semi-detached and detached houses (22% of 3,800 homes), late-1950s and early-1960s houses (14%) and early postwar houses (13%), the recurring challenge is meeting Part L in solid-walled period houses without ruining the room, and we detail the insulation to hit the numbers with the least intrusion.
Building control applies everywhere in Clandon & Horsley regardless of planning designation, but in conservation areas such as East Clandon, East Horsley, West Clandon and West Horsley the two processes interact — insulation and window details often have to satisfy Part L and a planning condition at once. No Article 4 direction is recorded for Guildford Borough Council, but Clandon & Horsley's 4 conservation areas still limit permitted development on those streets. We draw the construction details to reconcile both.

A full-plans set for Clandon & Horsley building control is checked against the Approved Documents. A typical extension or loft set covers each of these:
We produce the full-plans construction set — structure, fire, thermal and drainage details with the structural calculations — and submit it to your chosen building control body, whether that is Guildford Borough Council's own team or an approved inspector, so problems are settled on paper before they cost money on site.
Building control is a separate approval, but most Clandon & Horsley projects clear planning first, so Guildford Borough Council's live decision record below sets the context. Guildford Borough Council granted 86% of its householder applications in the year to 31 March 2026, and East Clandon shapes what is approved here. We handle both stages, so the construction drawings follow through seamlessly once permission is granted.
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.
There are two ways to get building control approval, and for anything structural in Clandon & Horsley we recommend the full-plans route — particularly on the borough's 1930s semi-detached and detached houses (22% of 3,800 homes) and late-1950s and early-1960s houses (14%), where opening up an old structure tends to reveal surprises. A building notice lets work start with no approved drawings — cheaper up front, but the surveyor rules on compliance as the build proceeds, so a wrong detail is discovered mid-work and rebuilt at your cost. Full plans get the whole set checked and approved before a brick moves, which is what banks, warranty providers and future buyers want to see.
Full plans also protect the project commercially. With approved construction drawings your builder prices exact quantities rather than guessing, and there is a completion certificate at the end — the document a solicitor asks for when you sell across East Clandon, East Horsley and West Clandon and the rest of Clandon & Horsley. Where a project sits in a controlled setting — Clandon & Horsley contains East Clandon, East Horsley, West Clandon conservation areas (East Clandon designated 1973), so materials, fenestration and roof form are assessed against the appraisal — the construction details also have to respect what planning has conditioned, and we draw the full set and manage the building control submission to reconcile both.

Every structural project needs building regulations drawings whatever the planning position. A few of the Clandon & Horsley neighbourhoods and property types where we prepare them most often:
Building regulations drawings for East Clandon's conservation area designated in 1973 — structure, fire and Part L detailed for building control sign-off.
Building regulations drawings for East Horsley's conservation area designated in 1973 — structure, fire and Part L detailed for building control sign-off.
Building regulations drawings for West Clandon's conservation area designated in 1973 — structure, fire and Part L detailed for building control sign-off.
Building regulations drawings for West Horsley's conservation area designated in 1973 — structure, fire and Part L detailed for building control sign-off.
Building regulations drawings for West Clandon's civil parish within Clandon & Horsley — structure, fire and Part L detailed for building control sign-off.
Building regulations drawings for West Horsley's civil parish within Clandon & Horsley — structure, fire and Part L detailed for building control sign-off.
They are different approvals and most projects need both. This is how they split in Clandon & Horsley.
| Planning permission | Building regulations | |
|---|---|---|
| Question it answers | Should this be built here? | Is it built safely and efficiently? |
| Decided by | Guildford Borough Council planning | Building control body or approved inspector |
| Main drawings | Location, block, proposed plans & elevations | Structural, fire, thermal & construction details |
| Needed for permitted development? | No — a certificate is optional | Yes — always, before work starts |
In conservation areas such as East Clandon and East Horsley, a planning condition can dictate materials that the building regulations details must then also satisfy.
A fixed process built around how Clandon & Horsley projects are approved and inspected — most construction sets are ready within seven days of survey.
Send us your Clandon & Horsley postcode and scheme. We confirm whether you also need planning, which parts of the regulations apply, and whether Guildford Borough Council building control or an approved inspector suits the job.
We measure the existing structure so the construction details, spans and junctions are drawn to the real building rather than an assumption — the base sound structural calculations depend on.
Chartered designers and engineers produce the full-plans set — structure, fire, Part L thermal, drainage and details — with the structural calculations that support every beam and foundation.
We submit the full-plans application to your building control body, resolve any queries before work starts, and revise the drawings free until the set is approved and the work signed off.
They are two separate approvals. Planning permission, decided by Guildford Borough Council, answers whether a scheme should be built at all — its size, look and impact on neighbours. Building regulations, checked by a building control body, answer whether it is built safely and efficiently — structure, fire, insulation and drainage. A Clandon & Horsley project usually needs both, and even permitted-development work that skips planning still needs building control sign-off.
Yes — planning permission is not building control approval. The planning drawings show what the building looks like; building regulations drawings show how it is constructed, and no structural work in Clandon & Horsley can lawfully complete without a building control sign-off. The two sets are drawn together but approved by different bodies, so having one never removes the need for the other. Guildford Borough Council is the decision-maker.
For anything structural in Clandon & Horsley — a loft, an extension or removing a wall — we recommend full plans. The whole construction set is checked and approved before work starts, so a non-compliant detail is caught on paper rather than rebuilt on site. On the borough's 1930s semi-detached and detached houses (22% of 3,800 homes) that certainty matters, and a building notice — which lets a surveyor judge compliance as work proceeds — risks costly rework. Banks and warranty providers also prefer the approved full-plans set that Guildford Borough Council or an approved inspector signs off.
Yes. You can use Guildford Borough Council's building control team or an independent approved inspector — both enforce the same regulations, so it comes down to price, availability and continuity. We draw the full-plans set to the same standard either way and submit it to whichever body you choose, then manage the queries and inspections through to the completion certificate. This applies to your Clandon & Horsley address specifically.
Solid-walled period houses — common across Clandon & Horsley, including conservation areas such as East Clandon and East Horsley — are the hardest to bring up to Part L without losing room or altering the fabric. We detail the insulation to hit the required U-values with the least intrusion, using internal or roof-level build-ups and, where a planning condition protects the exterior, methods that satisfy both the energy standard and the heritage requirement at once. Guildford Borough Council is the decision-maker.
We price each Clandon & Horsley job individually, because the structural content and the size of the construction set vary from a single beam to a whole-house refurbishment, and send a fixed, no-obligation quote within one working day. It covers the full-plans drawings and structural calculations with free revisions until sign-off. The building control body's own fee is separate. Call 020 7864 7245 to start. Guildford Borough Council is the decision-maker.
Answer five quick questions and get a free planning score for your exact address — instantly. Then, if you want the full picture, unlock the detailed analysis: your council's live approval rates, local precedents, constraints on your street and a step-by-step route to permission.
Same fixed quotes, same fast drawings — wherever your project is.