Full-plans building regulations drawings for Mid Sussex — 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.
Mid Sussex District Council granted 93% of the householder planning decisions it made in its latest published year — 6 points above the 87% England-wide householder average. Mid Sussex contains Albourne, Fairfield, Hurst Wickham conservation areas (Albourne designated 1989), so materials, fenestration and roof form are assessed against the appraisal, which is where a policy-literate drawing pack earns its keep. Its dominant Victorian (1837–1901) 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 Mid Sussex District Council needs a full application. In conservation areas such as Albourne, Fairfield and Hurst Wickham those rights are removed, so we confirm your exact address before a line is drawn. A validated householder application in Mid Sussex is determined against an 8-week statutory target.
Albourne (conservation area designated in 1989), Fairfield (conservation area designated in 1989), Hurst Wickham (conservation area designated in 1984), Hurstpierpoint (conservation area designated in 1999), Langton Lane (conservation area designated in 1999), Lindfield (conservation area designated in 1969), Mill Hill Close (conservation area designated in 1999), Burgess Hill Victoria (ward of Mid Sussex), Downland Villages (ward of Mid Sussex), Haywards Heath North (ward of Mid Sussex), Hurstpierpoint (ward of Mid Sussex) and Lindfield (ward of Mid Sussex) — these are the Mid Sussex pockets our drawings cover most. Heritage designations here include Albourne, Fairfield, Hurst Wickham, Hurstpierpoint, Langton Lane, Lindfield and Mill Hill Close. Mid Sussex District Council weighs each proposal against Mid Sussex District Council's adopted local plan and its householder design guidance, where the 10,660 homes here are 16% 1955-1964, 15% pre-1900, 10% 1965-1972, which is what sets the realistic roof and rear-projection options. On roofs the borough is shallow gabled roofs typical of that period's building and steeply pitched slate roofs, valley gutters and party parapets typical of pre-1900 building, over late-1950s and early-1960s houses (16% of 10,660 homes), Victorian and earlier houses (15%) and late-1960s and early-1970s houses (10%).
Heritage designation is the single biggest variable in Mid Sussex, and it is address-specific: Albourne (conservation area designated in 1989), Fairfield (conservation area designated in 1989), Hurst Wickham (conservation area designated in 1984), Hurstpierpoint (conservation area designated in 1999), Langton Lane (conservation area designated in 1999), Lindfield (conservation area designated in 1969) and Mill Hill Close (conservation area designated in 1999). Inside those boundaries permitted development is curtailed and Mid Sussex District 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, Mid Sussex takes in Burgess Hill Victoria, Downland Villages, Haywards Heath North, Hurstpierpoint and Lindfield. No Article 4 direction is recorded for Mid Sussex District Council, but the district's 7 conservation areas still limit permitted development on those streets.
On stock, Mid Sussex is late-1950s and early-1960s houses (16% of 10,660 homes), Victorian and earlier houses (15%) and late-1960s and early-1970s houses (10%) — which is why shallow gabled roofs typical of that period's building and steeply pitched slate roofs, valley gutters and party parapets typical of pre-1900 building govern what a loft or rear projection can realistically be. Mid Sussex District Council decided 697 householder applications in the latest published year and granted 93%, with 64% issued inside the eight-week target. We work from the council's own published record.
The full build-period split for Mid Sussex runs pre-1900 3% (190 homes), 1900-1918 0% (30 homes), 1919-1929 0% (10 homes), 1930-1939 6% (350 homes), 1945-1954 3% (170 homes), 1955-1964 30% (1,850 homes), 1965-1972 33% (1,990 homes), 1973-1982 4% (260 homes), 1983-1992 5% (310 homes), 1993-1999 4% (220 homes) and 2000-2008 3% (170 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.
Mid Sussex District Council also decides for Burgess Hill Victoria, Downland Villages, Haywards Heath North, Hurstpierpoint and Lindfield, so a decision in Mid Sussex 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 Mid Sussex and Mid Sussex District Council. These are the numbers that decide what is realistic on your street, so we work from them rather than from national averages.
| Measure | Mid Sussex |
|---|---|
| Dwellings recorded | 10,660 |
| Built pre-1900 | 190 (3%) |
| Built 1900-1918 | 30 (0%) |
| Built 1919-1929 | 10 (0%) |
| Built 1930-1939 | 350 (6%) |
| Built 1945-1954 | 170 (3%) |
| Built 1955-1964 | 1,850 (30%) |
| Built 1965-1972 | 1,990 (33%) |
| Built 1973-1982 | 260 (4%) |
| Built 1983-1992 | 310 (5%) |
| Built 1993-1999 | 220 (4%) |
| Built 2000-2008 | 170 (3%) |
| Built before 1919 | 20% |
| Built 1919–1939 | 10% |
| Built 1945–2008 | 54% |
| Conservation areas in Mid Sussex | 7 (Albourne, Fairfield…) |
| Conservation areas district-wide | 35 |
| Article 4 directions recorded | 0 |
| Householder applications decided | 697 |
| Householder applications granted | 93% |
| Decided within 8 weeks | 64% |
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 Mid Sussex District 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 Mid Sussex 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 Mid Sussex's stock, which runs to late-1950s and early-1960s houses (16% of 10,660 homes), Victorian and earlier houses (15%) and late-1960s and early-1970s houses (10%), 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 Mid Sussex regardless of planning designation, but in conservation areas such as Albourne, Fairfield, Hurst Wickham, Hurstpierpoint, Langton Lane, Lindfield and Mill Hill Close 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 Mid Sussex District Council, but the district's 7 conservation areas still limit permitted development on those streets. We draw the construction details to reconcile both.
A full-plans set for Mid Sussex 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 Mid Sussex District 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 Mid Sussex projects clear planning first, so Mid Sussex District Council's live decision record below sets the context. Mid Sussex District Council granted 93% of 697 householder decisions in the year to 31 March 2026, 64% of them inside eight weeks. 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 Mid Sussex we recommend the full-plans route — particularly on the borough's late-1950s and early-1960s houses (16% of 10,660 homes) and victorian and earlier houses (15%), 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 Albourne, Fairfield and Hurst Wickham and the rest of Mid Sussex. Where a project sits in a controlled setting — Mid Sussex contains Albourne, Fairfield, Hurst Wickham conservation areas (Albourne designated 1989), 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 Mid Sussex neighbourhoods and property types where we prepare them most often:
Building regulations drawings for Albourne's conservation area designated in 1989 — structure, fire and Part L detailed for building control sign-off.
Building regulations drawings for Fairfield's conservation area designated in 1989 — structure, fire and Part L detailed for building control sign-off.
Building regulations drawings for Hurst Wickham's conservation area designated in 1984 — structure, fire and Part L detailed for building control sign-off.
Building regulations drawings for Hurstpierpoint's conservation area designated in 1999 — structure, fire and Part L detailed for building control sign-off.
Building regulations drawings for Langton Lane's conservation area designated in 1999 — structure, fire and Part L detailed for building control sign-off.
Building regulations drawings for Lindfield's conservation area designated in 1969 — 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 Mid Sussex.
| Planning permission | Building regulations | |
|---|---|---|
| Question it answers | Should this be built here? | Is it built safely and efficiently? |
| Decided by | Mid Sussex District 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 Albourne and Fairfield, a planning condition can dictate materials that the building regulations details must then also satisfy.
A fixed process built around how Mid Sussex projects are approved and inspected — most construction sets are ready within seven days of survey.
Send us your Mid Sussex postcode and scheme. We confirm whether you also need planning, which parts of the regulations apply, and whether Mid Sussex District 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 Mid Sussex District 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 Mid Sussex 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 Mid Sussex 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. Mid Sussex District Council is the decision-maker.
For anything structural in Mid Sussex — 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 late-1950s and early-1960s houses (16% of 10,660 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 Mid Sussex District Council or an approved inspector signs off.
Yes. You can use Mid Sussex District 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.
Solid-walled period houses — common across Mid Sussex, including conservation areas such as Albourne and Fairfield — 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. Mid Sussex District Council is the decision-maker.
We price each Mid Sussex 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. Mid Sussex District 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.