A private house extension in north London revels in the play of light and materials and reminds us of the power architecture has to lift up our daily lives, writes Matthew Lloyd

5698_©Ioana Marinescu-vPPR Edit_220520

Source: Ioana Marinescu

There was a builder’s hoarding around a house in my London street spanning both covid lockdowns. Ours is a curvy and leafy road, just near Newington Green on the Islington and Hackney borders, made up mostly of mid to late-Victorian three-storey houses, with half basements and raised-up ground floors. Nondescript, but in a good way.

It’s nice living in a social street and so, once the builder had left, I asked my neighbour if I could see inside. There was no evidence whatsoever of any changes at the front of her house and I had wondered what on earth had been happening inside for all those months of work.

I got a nice surprise. This turns out to be a beautifully judged conversion and extension by vPPR architects, with a notable and perhaps unique side-extension sawtooth roof design.

5344_©Ioana Marinescu

Source: Ioana Marinescu

Victorian terraced houses are so utterly ubiquitous and repetitive. Most have the same typical plan. Either our forefathers could not be bothered to innovate once this plan had been invented, or the layout works so spectacularly well that they saw no need to change it. 

There is the main body of the house, then a half-outrigger extension, most often accessed from half landings. This imperfect arrangement has proved completely transferable through the generations, even as living standards and habits have changed over the centuries.

Time and again “period” houses fetch higher prices than anything post-war: this remains our most-liked domestic typology, whose sheer convertibility is no doubt the reason for its popularity.

I am wondering how many side-return extensions have been built, say, over the past 30 years? Thousands or tens of thousands perhaps. This is the way, at least in recent decades, to turn a gloomy side yard to good use: what were once poky and depressing rear kitchens can now become glamorous living spaces. 

5363_crop_©Ioana Marinescu

Source: Ioana Marinescu

There is a generic solution to this design problem by removing the rear walls and replacing them with heavy beams and columns, then a flat or lean-to glazed roof over the old yard. Most often this is done in an unremarkable way, and just sometimes with excellent detailing and finesse. 

Back in 2014 and 2015 the architects vPPR produced two unusual and memorable back-land London houses, Ott’s Yard and the Vaulted House. Both created predominantly top-lit modern interiors out of heavily overlooked sites. To some extent these put the practice on the map, showing real originality and courage.

This new conversion and extension by the practice has a similar trademark. An expansive new lower ground-floor space has been created here with an unexpected, sawtooth roof zigzagging over the side yard and onwards out over a new rear extension, so creating a line of light-pockets down into the newly expanded room.

5352_©Ioana Marinescu

Source: Ioana Marinescu

This arrangement is supported on an elegant steel structure, placing and expressing a row of columns out on to the property line. These three bays of structure echo three functions: living, cooking, eating.

From above, the roof tries to sit down but is only partially hidden behind a raised party wall and is unusually evident to the adjoining house. This is a full and ambitious statement of architectural intent – for me audacious – even in this small, hidden context.

The new rear extension faces a small, established garden with an elevation in soft, white brickwork carefully arranged in a Saxon-bond, with a continuous cast concrete lintel over two openings.


Source: Matthew Lloyd

There is no plate glass patio slider here as one might expect, but instead W40 steel windows divided up in a homely 1930s pattern. A flat roof over the extension’s other half forms a roof terrace above, served by a small upper ground-floor study.

Further back into the new space, the architects have chosen to remove the house’s original stair, to relocate it with a new, softly curving white staircase set within a new centrally located void, releasing the rear wall and sash window to float above. This unexpected move is at complete odds with the original house’s anatomy. But the void acts as the dividing line between the old and new architecture, leaving the traditional street facing front room untouched.

Here again less is not more, for like the sawtooth roof, the new stair could have been simpler in plan, orthogonal perhaps or just not built at all. But in fact, it acts as a fitting introduction to the new space below and with solid white plastered balustrades, it successfully merges into the architectural whole.

The expansive new lower ground-floor interior is much more classic than modern. The client is a psychotherapist, which I always think of as a calm profession: perhaps this was also the design intention here. At first glance, or to the uninitiated, you almost might not see architecture here at all.

A long-held collection of ceramics and paintings line the interior, the kitchen is well detailed but is not in any way spartan: the whole experience is one of comfort, familiarly and longevity.

This then is personal architecture. The client found this architect through a friend; an excellent small builder did the work; even with a rise in initial costs and an extended build period, she has no regrets whatsoever.

vPPR have produced a mature piece of work here, out of what is now their established architectural practice, whose work type and scale is no longer primarily domestic. For me it demonstrates what architecture should be primarily for, which is to provide a service to fully meet a client’s needs, whilst using design to absolutely expand that project’s potential.

Leconfield Road, London N5

Architect vPPR: Teresa Erskine, Aoife Kelly, Tatiana von Preussen

Engineer Momentum

QS Geoff Beardsley and Partners: John Underdown, Aleksandra Witkowska

Environmental Services Enhabit

Contractor P&D Building Services Ltd