Barnet protects the Hendon Burroughs and Church Farm conservation areas around the historic St Mary's core, alongside standard suburban householder control across the rest of NW4.


If your property sits elsewhere in the borough, the borough-wide page for building regulations drawings in Barnet covers the same service across every ward.
Building regulations drawings for a Hendon project turn the design into a construction-ready set — Part A structure, Part B fire, Part L thermal, Part M access — for Barnet Council Building Control or an approved inspector. On NW4's inter-war semis and terraces around hendon, with, the recurring details are steel beams over knocked-through ground floors, loft floor build-ups, and insulation upgrades to solid period walls around Hendon, Brent Street, Hendon Central, West Hendon fringe.
A construction-ready drawing package compliant with every Approved Document — Part A structure, Part B fire, Part L thermal, Part M accessibility — submitted to LABC or your approved inspector with structural calculations coordinated.
Across Hendon, Brent Street, Hendon Central, West Hendon fringe in NW4, the dominant property is inter-war semis and terraces around hendon, with mansion flats, post-war estates and some edwardian houses. That stock shapes what building regulations drawings looks like here: the right approach for a period terrace differs from a mansion-block flat or a new-build, and Barnet Council judges each on design quality and neighbour impact. We survey the specific Hendon property, confirm the planning route — Permitted Development, a Lawful Development Certificate, or full planning — and draw a council-ready set tailored to the NW4 streetscape.
Housing stock in NW4: Inter-war semis and terraces around Hendon, with mansion flats, post-war estates and some Edwardian houses.
Within the district: Hendon, Brent Street, Hendon Central, West Hendon fringe.
Streets we know in NW4: the streets around Hendon Central and Brent Street, the Park Road area and the inter-war terraces toward West Hendon. Each road has its own building line, boundary treatment and precedent that Barnet Council weighs when assessing a building regulations drawings scheme.
Conservation areas: Hendon Burroughs / St Mary's, Church Farm (Hendon). Inside these, most external work needs full planning and a Heritage Statement.
Getting around NW4: Hendon Central on the Northern line, plus Hendon Thameslink.
Regeneration: Hendon falls within or beside the West Hendon / Brent Cross regeneration nearby, which shapes local planning policy and design expectations.
Property values: the NW4 median fell 9.7% between 2024 and 2025, landing at £537,500. It is a sizeable drop measured on a modest base of 234 registered sales, so the direction is worth more attention than the decimal place.
Borough character: Suburban outer-London borough; permitted development used heavily; Hampstead Garden Suburb has its own residents' trust with additional design controls.
Plans, sections and elevations at 1:50 with full annotation and material specification.
U-values for walls, roof, floor and glazing; SAP or SBEM where required; compliance statement.
Chartered engineer sign-off on beams, pad foundations, lintels, roof structure.
Escape routes, compartmentation, smoke alarms, fire-rated construction detail.
Soil and vent pipe routes, MVHR coordination, EV charging (Part S).
Full Plans submission to Barnet Council Building Control or an approved inspector with inspections coordinated through to completion certificate.
Single planning or building-regs submission.
Planning + building regs + structural.
Listed, conservation or complex sites.

Because NW4 is a settled family suburb of inter-war semis and terraces around Hendon Central and Brent Street — ideal for rear and side extensions and hip-to-gable loft conversions. Outside the historic Burroughs conservation area, much of the work runs on the Permitted Development route, confirmed with a Lawful Development Certificate.
Yes — the Hendon Burroughs and Church Farm conservation areas protect the historic St Mary's core and the older houses, so external changes there need full planning with a Heritage Statement. We design sympathetically and handle the Barnet application where the conservation route applies.
Usually yes on the inter-war semis outside the conservation areas — a hip-to-gable plus rear dormer within the volume allowance, confirmed by a Lawful Development Certificate. We check the head height and any constraint, then draw the scheme for Building Control too.
With NW4 houses around £550,000-£900,000, a direct Northern line and the Brent Cross regeneration nearby, a rear extension or loft adds family space worth above the build and drawing cost. NW4 offers strong north-west London value.
Barnet Council charges its own statutory application fee (currently £548 for a householder planning application, £610 for a full application). We quote the drawings as one fixed price and the free site survey covers every NW4 address.
For a NW4 project across Hendon, Brent Street, Hendon Central, West Hendon fringe, expect roughly 3–4 weeks from instruction to submission: week 1 the measured survey, weeks 2–3 the drawings and your revisions, then validation and the statutory determination by Barnet Council (8 weeks for a householder application). We carry the Hendon application through every officer query to the decision.
Hendon (NW4) sits primarily in Barnet, so applications are decided by Barnet Council. Conservation areas within NW4 include Hendon Burroughs / St Mary's, Church Farm (Hendon), where full planning and a Heritage Statement are required. We confirm the planning route for your exact address before quoting.
Almost always. Any structural work behind building regulations drawings in Hendon — new openings, steel beams, loft floors, foundations — needs Building Regulations approval covering structure (Part A), fire escape (Part B) and insulation (Part L), submitted to Barnet Council Building Control or an approved inspector. On NW4's typically terraced and semi-detached stock, a Party Wall notice to adjoining neighbours is normally required before the steelwork. We coordinate both as part of the Complete package.
In value terms, yes. The bigger risk is an unapproved or non-compliant scheme — which is why council-ready drawings and a clean Building Control sign-off matter on NW4 homes.
Local policy varies more between adjoining boroughs than most owners expect. Full service detail for N2, N3, N10, N12, N20, NW2, NW7 and NW11.
Pick a slot that suits you. No obligation and no sales pressure, just straight answers on your planning route.
Every NW4 postcode district we draw in, the stock that dominates it and the authority that validates a building regulations package there. NW4 fees below are the statutory England rates for 2026, not building regulations package estimates.
| Postcode | Area | Dominant stock | What it means for a building regulations package |
|---|---|---|---|
| NW4 | Hendon | 1930s semi-detached, post-war flats | NW4 covers Hendon only; Barnet Council handles the building regulations package. |
| N2 | East Finchley | Edwardian terraces, 1930s semi-detached | Adjoining district to NW4. The Building Regulations are national; only the choice of inspector is local, and even that is not fixed by Barnet. |
| N3 | Finchley Central | 1930s semi-detached, Edwardian villas | Adjoining district to NW4. The Building Regulations are national; only the choice of inspector is local, and even that is not fixed by Barnet. |
| N11 | New Southgate / Bounds Green | mixed stock | Adjoining district to NW4. The Building Regulations are national; only the choice of inspector is local, and even that is not fixed by Barnet. |
| N12 | North Finchley / Woodside Park | 1930s semi-detached, Edwardian villas | Adjoining district to NW4. The Building Regulations are national; only the choice of inspector is local, and even that is not fixed by Barnet. |
Roof pitch, wall build-up and plot depth change every few NW4 streets, and each one changes what a building regulations package can achieve at that address.
How designation changes a NW4 (Hendon) building regulations package: Barnet Council maintains 20 conservation areas, including Mill Hill, Hendon, Golders Green. Inside any of them a NW4 (Hendon) building regulations package cannot rely on permitted development, and the route becomes a £548 householder application determined in 8 weeks rather than a £249 prior approval in 6 weeks. Hendon sets the tone for NW4 (Hendon) casework.
NW4 (Hendon) permitted development status: there is no borough-wide direction from Barnet Council, so a building regulations package at a NW4 address is normally still permitted development. We certify that with a £274 Lawful Development Certificate rather than leaving a NW4 (Hendon) sale to argue it later.
The building fabric around NW4 (Hendon): 1930s semi-detached dominates; Edwardian villas in Muswell Hill, Finchley; Garden Suburb Arts & Crafts in Hampstead Garden Suburb; post-war flats in Colindale. Suburban outer-London borough; permitted development used heavily; Hampstead Garden Suburb has its own residents' trust with additional design controls. A building regulations package in NW4 (Hendon) is scoped against that stock first, because it decides whether the scheme runs as permitted development, a £274 Lawful Development Certificate, or a full £548 application to Barnet Council.
Sources for this NW4 building regulations package page: borough policies maps and conservation-area registers (2025–26), Royal Mail postcode district boundaries, the Town and Country Planning (Fees for Applications) (England) Regulations, the Town and Country Planning (General Permitted Development) (England) Order 2015 as amended, and the Party Wall etc. Act 1996.
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