Bounds Green Builders for House Extensions, Loft Conversions and Flat Conversions, N11 and N22
Design And Build is an architect-led firm working across Bounds Green and Bowes Park. Architects, structural engineers, party wall surveyors and our own site teams sit in one business, so your project runs on a single contract from the first survey to the final certificate.
What you can build here depends on three things about the address rather than the house: which of two councils decides, how much permitted development you have left, and — if flats are the plan — what your neighbours have already done. We settle all three before quoting.
Free survey and a fixed price against a written scope.
If You Need More Room for the Family
House extensions in Bounds Green
The Victorian and Edwardian terraces and semis between Bounds Green Road and Green Lanes were built with a narrow rear addition and a wasted strip of yard alongside it. Taking the back of the house out across the full width solves both at once and is the change these properties respond to best. We build single-storey rear extensions, side returns, wraparounds and two-storey rear schemes where the plot and the neighbouring windows allow.
Loft conversions in Bounds Green
These roof pitches convert well. A rear dormer will usually yield a double bedroom with an en-suite, and hip-to-gable works on the semi-detached stock. Ridge height, rafter depth and where the new staircase lands decide whether it is worth doing, and we establish those on the first visit rather than after drawings exist.
What permitted development still allows in N11
There is no conservation area over the bulk of the residential grid here, so most rear extensions and rear-facing loft conversions fall within permitted development — no application, no fee, no wait. Two things to check first: whether a previous owner has already used part of your allowance, and which side of the borough boundary you sit on.
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If You Are Converting a House Into Flats
The Bounds Green restricted conversion area
Part of Bounds Green ward falls inside a restricted conversion area. Haringey wants to keep a mix of house sizes rather than let entire streets become flats, so the policy works on a threshold — once a set proportion of properties in a road has been converted, further permission is refused. Locally that figure is understood to be around a fifth.
The consequence is blunt: your right to convert depends on what your neighbours did first. Two identical houses on the same street can receive different answers, and the one that applies later is the one that loses.
What we check before you commit
We run the street’s conversion history against Haringey’s planning record as part of a feasibility assessment, before you exchange rather than after. If the answer is no, you will hear it from us plainly. It is considerably cheaper than hearing it from a refusal notice.
If You Are Buying to Let
HMO permission on the Enfield side
Turning a house into a small house in multiple occupation requires planning permission everywhere in Enfield. It is a borough-wide requirement, not limited to conservation areas or particular streets, and it catches investors out with some regularity.
Conversion limits on the Haringey side
Here the restricted conversion area may apply on top of everything else. A property that looks like an obvious conversion can turn out to be a house you are obliged to keep as a house, so establish the position before purchase rather than after.
If You Are Renovating a Period House
What forty years of improvement leaves behind
A full renovation here usually begins with subtraction. These houses carry artex, boxed-in chimney breasts, three generations of wiring and a boiler nobody has serviced since the last owner but one. Stripping that back is the unglamorous half of the job and it is where the surprises live — which is why we survey properly before pricing rather than after.
Rebuilding it properly
Then the work that shows: services renewed, the house made warm, walls moved where the original plan no longer suits how anyone lives, and the interior and finishes taken to a standard worth the disruption.
Keeping the detail worth keeping
Where original features survive, keep them. Repairing a sash costs less than replacing one and plaster mouldings can be run to match. The difference between a house that has been renovated and one that has merely been gutted is almost entirely in those decisions.
Which Council Decides Your Application
Bounds Green is divided between Haringey and Enfield, and the line runs through the middle of the district rather than around it. Bowes Park sits partly in each. Neighbouring houses can therefore answer to different planning authorities applying different local policy to the same national rules.
It is not a problem, but it is not guessable from the street name either. We confirm whether Haringey or Enfield determines your application before anything is designed, because it shapes both the drawings and the timetable.
How We Work
Survey and feasibility
We visit, establish the determining authority, the remaining permitted development and the conversion position, and look at what the structure will take. You get a straight answer on what the property will support, and you get it before anyone has been paid to draw anything.
Design and engineering
Our architects and structural engineers work on the scheme together in house, so the design is tested against what the building will carry as it is drawn rather than afterwards.
Consents and party wall notices
Any application is ours to lodge and argue. Your neighbours also have a say in structural work: the Party Wall etc. Act 1996 applies if you bear a beam into a shared wall, build up to the line, or excavate lower than their footings within three metres. Reply in writing and it is a formality; no reply or an objection means two surveyors appointed and billed to you. Our surveyors take that on so it never becomes your correspondence.
Construction and handover
Our own trades take the site under one programme and one project manager. The job ends with building control sign-off, your certificates and warranties, a snagging list actually finished, and a guarantee you can hold us to.
Areas We Cover Around Bounds Green
N11 and N22, taking in Bounds Green, Bowes Park and the streets running down towards Wood Green — along with Wood Green, Palmers Green, Hornsey, New Southgate and the wider north London area.
Bounds Green Planning Questions
Which council decides my application?
Haringey or Enfield, depending on which side of the boundary your address falls. It is not predictable from the street name, and we confirm it at survey stage.
Can I convert my house into flats?
It depends on your street rather than your house. Part of Bounds Green ward is a restricted conversion area, and once enough properties on a road have been converted the council stops granting permission. We check the record before you commit.
Do I need permission for a rear extension?
On most Bounds Green streets, no. There is no conservation area over the bulk of the residential grid, so permitted development generally applies within the standard limits — worth confirming for your address, particularly if the house has been extended before.
What do I need for an HMO?
Planning permission borough-wide on the Enfield side, and possibly the conversion restriction on the Haringey side as well. Establish it before purchase.
How long will the work take?
If it is permitted development we can move quickly. If an application is needed, the council’s determination period sets the pace and we plan around it rather than optimistically through it.
Get Your Bounds Green Project Priced
Tell us where the property is and what you would like it to become. We will establish which council decides, what your street’s conversion record allows and what permitted development remains — then price the work against a written scope.
Contact us to arrange a free survey.
Area We Cover
