Area guide · N13
House Extensions in Palmers Green (N13)
Planning a house extension in Palmers Green? We design, gain planning permission and build across N13's Edwardian heartland — the terraces and semis built in one confident burst through the 1900s and 1910s after the railway arrived. Most single-storey rear extensions here cost £45,000–£90,000 to build, applications go to Enfield Council, and the route leading N13's recent approvals is the prior-approval householder extension — while the highest-value moves on this Edwardian stock are the side-return-plus-rear wrap and the rear-dormer loft. A free site visit is the quickest way to find out what your own street will take.
Live planning data
What Enfield Council is actually approving right now
We track every residential planning decision across North London — so you can see what Enfield is approving rather than guessing. In the most recent decision window, 11 N13 schemes were approved, within 113 residential approvals borough-wide. Real examples from Palmers Green's postcode:
- 96 Grenoble Gardens, N13 — householder extension approved through the prior-approval (larger home) route
- 55 Cranford Avenue, N13 — certificate of lawfulness granted for existing development
- 23 Chequers Way, N13 — householder extension and alterations (approved)
Two lessons in that list. First, the prior-approval route is alive and well in N13 — the streamlined path that takes a semi's rear extension from 3m to 6m (4m to 8m on detached homes) by consulting the neighbours instead of running a full application. Second, the Cranford Avenue decision is a quiet warning: a certificate of lawfulness for existing development is what you apply for when work was done without the paperwork. Far better to hold the certificate before the build than to chase one years later — it's how we run every permitted development job.
Source: Enfield Council's open planning records. Treat the examples as a barometer of what the borough approves — they're not work of ours, and the fate of each application hangs on its own circumstances.
Local knowledge
Palmers Green's housing stock — and what works on each
Palmers Green is North London's Edwardian heartland — street after street raised between 1900 and the 1910s as the railway opened the fields, with Broomfield Park as the green centrepiece and a high street whose long-established Greek-Cypriot community has earned the area its affectionate nickname, Little Cyprus. The stock is remarkably consistent, which means the winning schemes are too.
The Edwardian terraces. The defining Palmers Green house: bay front, hallway, and a narrow galley kitchen in the original rear addition with a dead side alley beside it. The side-return extension (£35,000–£65,000) reclaims that alley for a full-width kitchen-diner; combine it with a rear push and you have the wrap-around (£70,000–£140,000) that completely rethinks the ground floor. Above, the tall Edwardian roof takes a loft conversion with rear dormer superbly — a proper double bedroom without losing a metre of garden.
The wider Edwardian semis around Broomfield Park. More width, more garden, more options. The 6m prior-approval rear extension — the route the Grenoble Gardens approval used — and the kitchen extension (£55,000–£110,000) both suit these plots, and rear-dormer lofts work just as well here as on the terraces.
The Lakes Estate, on the Fox Lane side. Palmers Green shares this celebrated Edwardian conservation area with neighbouring Southgate, and permitted development rights are restricted within it. Extensions still go ahead — as full applications with genuine care on materials, proportions and rooflines. Sensitive design isn't a hurdle for us; it's the brief.
Every street is different. That's the point.
We design to Palmers Green's stock and to what the council demonstrably approves — not to a template. A free site visit tells you what your house can take.
Get my free estimateHonest numbers
What a house extension costs in Palmers Green in 2026
These are realistic all-in build ranges for Palmers Green — labour and materials to a good standard, excluding VAT, professional fees and kitchen fit-out:
| Extension type | Typical Palmers Green cost | On-site time | Usual planning route |
|---|---|---|---|
| Side-return extension | £35,000 – £65,000 | 2–3 months | Often permitted development |
| Single-storey rear | £45,000 – £90,000 | 3–4 months | Often permitted development |
| Kitchen extension (incl. mid-range kitchen) | £55,000 – £110,000 | 3–4 months | Often permitted development |
| Hip-to-gable loft + rear dormer | £55,000 – £90,000 | 6–10 weeks | Usually permitted development |
| Wrap-around extension | £70,000 – £140,000 | 4–6 months | Full application |
| Double-storey rear | £75,000 – £160,000 | 5–7 months | Full application |
| Garage conversion | £18,000 – £35,000 | 4–6 weeks | Usually permitted development |
As a rule of thumb, Palmers Green builds at £2,800–£4,200 per square metre — standard North London rates, with the care Edwardian brickwork and detailing deserve. On a typical 20m² rear addition, that pencils out to a £60,000–£80,000 build. Every job is priced after the free site visit as a fixed sum, itemised trade by trade — so the total you commit to is the total you part with.
Permissions, handled
Planning permission in Palmers Green — what you need to know
Most Palmers Green extensions don't need a full planning application. As standard, a terrace or semi may push 3m to the rear under permitted development and a detached house 4m; apply through the larger home prior-approval route and the ceiling rises to 6m and 8m — exactly how 96 Grenoble Gardens went through. Loft conversions enjoy a generous volume allowance, which the area's tall Edwardian roofs put to excellent use.
The Fox Lane side needs more care. The Lakes Estate conservation area restricts permitted development rights, so schemes there proceed as full applications judged on design quality. For the rest of N13, we check your address against Enfield's conservation map as standard before designing.
Timing: Enfield's target for a standard householder decision sits in the region of eight weeks; prior-approval and certificate cases often resolve faster.
Party walls: terraces dominate Palmers Green, and a side-return or wrap-around usually engages the shared wall — sometimes on both sides. Budget £1,000–£2,500 per affected neighbour if surveyors are appointed; we serve the notices and keep relations friendly.
Paperwork that pays: the Cranford Avenue certificate above shows what happens when work runs ahead of paperwork. We secure a Lawful Development Certificate before building any permitted development scheme, so your extension is unimpeachable when you sell.
How it works
How it works
- Free site visit — we walk your Edwardian terrace or semi here in Palmers Green, listen to what you're after, and give straight answers on feasibility, budget and the planning route.
- Design & drawings — considered plans and 3D visuals that work with the Edwardian bones of the house and the way you live day to day.
- Planning, handled — the full application package goes into Enfield Council with us managing every stage until it's decided.
- Fixed-price build — our vetted North London team takes care of the construction, the building control sign-off and a clean, tidy handover.
Our work
Recent work near Palmers Green
Our build team's recent North London projects include a full house transformation taking a family home from 120m² to 360m², a 55m² garden room with kitchen and bathroom, and an Edwardian conversion in Finchley — directly relevant experience for N13's Edwardian streets. At your site visit, just ask — we'll show you the work that mirrors your own plans.
Questions, answered
Palmers Green extension FAQs
What does an extension cost in Palmers Green?
Most single-storey rear builds land between £45,000 and £90,000; side-returns start around £35,000 and wrap-arounds run £70,000–£140,000, all excluding VAT and fees. N13 builds at standard North London rates of £2,800–£4,200/m².
What's the best extension for an Edwardian terrace in N13?
The side-return is the classic first move — it turns the narrow galley kitchen into a full-width kitchen-diner. Pair it with a rear extension as a wrap-around for a whole-ground-floor rethink, and add a rear-dormer loft when you need another bedroom. That combination is what this stock was waiting a century for.
My house is near Fox Lane — am I in the Lakes Estate conservation area?
Possibly — the estate covers the Edwardian roads between Fox Lane and Bourne Hill, shared with Southgate. We check your exact address against Enfield's conservation map before designing; inside the boundary, your scheme goes in as a full application with conservation-grade detailing.
What is a certificate of lawfulness, and when do I need one?
It's the council's formal confirmation that work is (or was) lawful without planning permission. The recent N13 list includes one granted retrospectively at 55 Cranford Avenue — but the smart order is certificate first, build second, which is how we run every permitted development project.
Will a side-return need party wall agreements?
Almost always, because it builds along the shared boundary wall. A wrap-around can engage both neighbours. Allow £1,000–£2,500 per affected neighbour where surveyors are appointed — we prepare the notices early so nothing stalls.
Is Enfield Council approving much in N13 right now?
Yes — 11 N13 schemes in the most recent decision window, within 113 approvals borough-wide, with standard householder decisions taking around eight weeks. The data says well-designed schemes are getting through.
Nearby areas we cover
What clients say
Rated 5.0 on Google
“Used The Extension Company for a loft conversion on our semi detached in Barnet and couldn't be happier. They explained what was possible at the first visit, sorted the planning side, and gave a fixed price with no surprises at the end.…” read the full review
“Really impressed with the entire project. The side extension and conservatory have been finished to a very high standard and the team made the process straight forward and stress-free. It’s transformed the space and added so much value, would definitely recommend.”
“Brilliant experience with the extension company, transparent from the word go. Completed a double story extension for me and I couldn’t be more pleased. Thank you”
“I got the extension company to do a bathroom refurb for us a January they done a great job they managed to fit in a large shower as well as a bath”
Reviews shown word for word from our Google profile. Read all 8 reviews on Google
Free site visit
Ready to see what's possible on your street?
Free site visit anywhere in Palmers Green, honest feasibility advice and a fixed, itemised price — design, planning and build handled end to end by the Pine Grove team.
020 3051 9430Lines answered weekdays 8am to 6pmEvery area we cover
Browse the full areas guide →Enfield & the EN heartland
Cockfosters · Oakwood · Southgate · Winchmore Hill · Palmers Green · Enfield · Edmonton
Barnet borough
Barnet · East Barnet · New Barnet · Hadley Wood · Arkley · Monken Hadley · Hampstead Garden Suburb · Whetstone · Totteridge · Finchley · East Finchley · North Finchley · Friern Barnet · Hendon · Golders Green · Mill Hill · Edgware
Hertfordshire border
Potters Bar · Radlett · Shenley · Elstree & Letchmore Heath · Northaw · Cuffley · Cheshunt · Waltham Cross · Brookmans Park · Hatfield · Hoddesdon
St Albans & the Chilterns
Harpenden · St Albans · Chorleywood & the Chalfonts · Gerrards Cross · Beaconsfield
Haringey & the N postcodes
Muswell Hill · Highgate · Crouch End · Hornsey · Wood Green · Tottenham
North-west London
East & the Essex edge
Stoke Newington · Walthamstow · Chingford · Loughton · Chigwell · Theydon Bois & Epping · Hutton Mount & Shenfield
South-west London & Surrey
Richmond · Wimbledon Village · Esher · Oxshott · Cobham · St George's Hill · Wentworth & Virginia Water
South London & the Surrey downs
Chislehurst · Purley & the Webb Estate · Banstead · Kingswood & Walton-on-the-Hill