House extension North London projects work best when design, permissions, structure and construction are planned as one joined-up job. North Star Building Solutions helps homeowners create practical new space with a site review, itemised quotation and careful coordination of trades and project stages.
A house extension North London homeowners can plan with confidence
North London is not one uniform building environment. Edwardian terraces in Haringey, period homes in Islington, family houses in Barnet and tighter Camden sites all bring different questions about access, neighbours, drainage, structure and conservation. We begin by understanding how you want to use the space and what the property can realistically support.
Our team can deliver rear, side-return, wraparound and double-storey extensions, as well as kitchen extensions and structural remodelling. We also coordinate associated electrics, plumbing, plastering, flooring and decoration, so the new room feels like part of the house rather than an addition bolted onto it.
Which extension is right for your property?
Rear and kitchen extensions
A rear extension can improve both floor area and daily circulation. It is often used to create an open kitchen, dining and family room with rooflights or wide garden doors. The important decisions are not only size: natural light, storage, kitchen layout, heating and the position of structural supports all affect how the room works.
Side-return and wraparound extensions
A side return can make better use of the narrow strip beside many Victorian and Edwardian terraces. A wraparound design combines side and rear space for a larger transformation, but it requires particularly careful thinking about daylight to the centre of the original house and about boundary details.
Two-storey extensions
Where planning and the existing structure allow, a two-storey extension can add both ground-floor living space and an upstairs bedroom or bathroom. Early structural input helps confirm foundation requirements, roof junctions and how new services will be routed.
Planning permission, Building Regulations and neighbours
Some extensions may fall within permitted development rights, while others need a planning application. Rights can be restricted for flats, listed buildings and properties in conservation areas. Start with the official Planning Portal extension guidance; the final route depends on your property and local authority. Building Regulations approval is a separate requirement, and work near a shared structure may also involve the Party Wall etc. Act.
We flag these issues early and work from the approved drawings and structural information supplied for the project. This reduces costly changes once the build is under way.
Our clear 7-step extension process
- Discovery call: understand the space, budget range and timing.
- Site review: inspect access, existing layout and practical constraints.
- Scope and itemised quote: define what is included and identify allowances.
- Pre-start coordination: review drawings, engineering, permissions and logistics.
- Protected build: organise access, dust control, deliveries and regular updates.
- Quality checks: inspect structure, services, finishes and agreed details.
- Handover: complete the final review, documentation and snagging.
Local extension coverage across North London
We cover the wider North London area, with dedicated guidance for Barnet, Haringey, Camden, Islington and Enfield. See our North London builders hub for the full service overview. If you need improvement inside the existing footprint as well, our North London renovation service can be coordinated with the extension.
House extension North London FAQs
How long does a house extension take?
Timescales depend on size, structure, access, specification and approvals. We provide a project-specific programme after reviewing the drawings and site rather than giving a misleading one-size-fits-all promise.
Can we stay in the house during the work?
Often yes, especially in the earlier stages, but it depends on the scale of structural work and whether the existing kitchen or services must be disconnected. We discuss safe separation, temporary arrangements and the most disruptive stages before starting.
Do you provide a fixed quote?
We provide a detailed, itemised quotation based on the agreed information. Any exclusions, provisional allowances or client-supplied items are identified so you can compare the real scope, not only the headline figure.
Plan your house extension in North London
Tell us what you want to change and arrange a site review. Call 07883 535012 or 020 3797 6399. We coordinate the agreed building work through construction, completion and handover.
