Interior Designer · HA6, HA5
Interior design in Northwood & Pinner
Katherine Varnava Interiors is a luxury interior designer for homes and commercial spaces in Northwood & Pinner. A BIID Registered Interior Designer® studio based in Mayfair, London, it offers full interior design, technical design and bespoke joinery, FF&E procurement and a single design-and-build service, with Katherine personally involved in every project.
Homes in Northwood & Pinner
Northwood and Pinner sit on the Metropolitan line in the far north west of London, with large Arts and Crafts houses in Northwood and a medieval village core at Pinner. KVI's Northwood Family Home is currently in construction here. Interior projects tend to involve substantial family houses where period character and modern family living need to be balanced.
Northwood's Frithwood estate was developed by Frank Carew after the Metropolitan Railway arrived in 1887 and is mainly large, individually designed detached houses in the Arts and Crafts style. Pinner High Street keeps late fifteenth and sixteenth century timber-framed, jettied buildings, eighteenth century red brick houses such as Pinner House, and 1930s mock Tudor buildings, while Waxwell Lane mixes timber-framed cottages, Victorian cottages and Arts and Crafts houses. Much of the wider area is interwar and later family housing. Projects here typically involve reconfiguring large houses for family use, new kitchens and bathrooms, and keeping leaded lights, timber windows and period joinery.
How the studio works
Every project, from a single room to a whole house or a commercial space, follows the same five-stage, RIBA-aligned journey: Define, Develop, Resolve, Deliver and Complete. The studio works alongside your architect and contractor, or delivers a single design-and-build service from concept to completion.
- Full interior design, from a single room to a whole house
- Interior architecture and spatial planning
- Technical design and bespoke joinery
- Lighting design
- FF&E design, procurement and installation
- Commercial interiors
- Design and build, or alongside your architect and contractor
The studio takes on projects across HA6, HA5, including streets such as Frithwood Avenue, Carew Road, Green Lane, Dene Road and Pinner High Street.
Enquire Now
Before you start in Northwood & Pinner
The consents and local rules that most often shape an interior project here, each linked to its official source. The studio checks them for your property at the start, so they are planned into the design and the programme.
Historic England states that listing status covers the entire building, inside and out, and that works needing listed building consent can include internal alterations as well as replacement windows. Consent is needed for any change that might affect the building's character as a building of special interest, and carrying out unauthorised works to a listed building is a criminal offence.Source: historicengland.org.uk
Northwood Frithwood was designated in 1989 and extended on 2 December 2009. Hillingdon's guidance leaflet says alterations should match the existing house in materials and detailing, including window shapes and sizes, and that cladding, roof alterations, chimney works and road-facing satellite dishes need permission.Source: hillingdon.gov.uk
Hillingdon also designates Dene Road, Copsewood Estate, Gatehill Farm Estate, Old Northwood and Hillside (Northwood Hills) as areas of special local character. These are non-designated heritage assets, and planning policies aim to preserve or enhance their local architectural character and appearance.Source: hillingdon.gov.uk
Harrow lists 13 conservation areas under Pinner, including Pinner High Street, Waxwell Lane, Moss Lane and Pinnerwood Park Estate. Article 4 directions apply in Pinner High Street, East End Farm, West Towers, Pinnerwood Park Estate and Pinner Hill Estate, meaning planning permission is needed for work that would otherwise be permitted.Source: harrow.gov.uk
In Hillingdon, which covers Northwood, construction works audible at the site boundary are permitted 8am to 6pm Monday to Friday and 8am to 1pm on Saturday, and not on Sundays or public or bank holidays.Source: hillingdon.gov.uk
Hillingdon considers parking bay suspensions for building works, large deliveries and removals at £48.50 per 5 metre space per day, paid in full on application, which must meet the council's minimum notice period.Source: hillingdon.gov.uk
Questions
Interior design in Northwood & Pinner
Does living in a Northwood conservation area affect an interior project?
Mostly where interior and exterior meet. Hillingdon's Frithwood guidance asks for alterations to match the existing house, including window shapes, sizes and materials, and says roof alterations, chimney works and cladding need permission. So while we design kitchens, joinery and layouts around how the family lives, we treat new windows, roof lights and chimney changes as items to agree with the council first.Source: hillingdon.gov.uk
Do I need consent to alter the inside of a timber-framed house in Pinner?
Very possibly. The Pinner High Street appraisal describes the area as a remarkable survival of a medieval village, with timber-framed, jettied buildings from the late fifteenth and sixteenth centuries, some of them listed, alongside eighteenth century brick houses such as Pinner House. We confirm the listing status first, record the historic fabric, and prepare a listed building consent application where internal changes call for one.Source: harrow.gov.uk
What hours can builders work in Pinner?
Pinner is in the London Borough of Harrow, which permits noisy construction work from 8am to 6pm Monday to Friday and 8am to 1pm on Saturday, with no noisy work on Sundays or bank holidays. We sequence strip-out and other noisy stages within these hours and plan quieter finishing work and deliveries with neighbours in mind.Source: harrow.gov.uk
Do you take on single rooms as well as whole houses in Northwood & Pinner?
Yes. Projects range from a single room, which can also be designed remotely through the Virtual Studio, to whole-house refurbishments, new builds and commercial spaces. Every project follows the same five-stage, RIBA-aligned process: Define, Develop, Resolve, Deliver and Complete.
Can you manage the build as well as the design?
Yes. The studio can work alongside your architect and contractor, providing contractor coordination and design oversight on site, or deliver a single design-and-build service that takes the project from concept to completion.
Will Katherine be involved personally?
Yes. Katherine Varnava, a BIID Registered Interior Designer®, leads every project herself. The studio takes on a deliberately limited number of projects each year so that she stays involved in every detail, from concept to completion.
Updated 17 October 2026
Nearby