West Sussex

Builders and joiners in Horsham. Terraces and party walls.

About 4,300 people to the square kilometre, and almost everything that makes building work here different from the villages around it follows from that one number.

Fifty thousand people live in Horsham inside just under twelve square kilometres — roughly 4,300 to the square kilometre, more than twenty times the density of the villages a few miles south. That one number shapes the work more than anything else about the town.

It means terraces and semis rather than detached houses in plots. It means a neighbour on the other side of the wall being cut into, a skip that needs a permit, and materials carried through the house because there is no side access.

Tennant Carpentry & Building are builders and carpenters in Horsham, and in the rest of West Sussex. The photographed work in this town runs to fitted wardrobes, alcove cabinetry and staircases, oak framed porches and roof carpentry. Extensions and loft conversions in Horsham, house renovation and barn conversion, and bespoke kitchens in Horsham, are the same trades on a larger canvas, here and elsewhere in the county.

Building and joinery work in Horsham

A new trussed roof standing complete over a house, seen from the road: bare timber rafters running the full length, a gable sheathed in board at the near end, scaffold across the front and overhead cables crossing the sky above it.

Truss roof, Horsham

Horsham

A trussed roof fitted in Horsham, designed and supplied by a manufacturer and lifted in entirely by hand because a low overhead cable ruled out a crane.

A finished oak framed porch over a front door: two posts carrying a beam with curved braces, a single-pitch roof running back to the house wall, tiled in clay tiles with lead flashing along the abutment.

Oak framed porch, Horsham

Horsham

A single-pitch oak framed porch, designed and built by us: air dried oak frame, softwood rafters, and a painted ply soffit so the underside reads as a board rather than a membrane.

A run of built-in wardrobes with dark charcoal sliding doors, the left-hand bay slid open to show two lit hanging sections, with a mirrored door and a dark door closed alongside.

Charcoal sliding-door wardrobes, Horsham

Horsham

A wall of old plank-door built-ins replaced with three sliding doors, one of them mirrored, over three bays fitted out with hanging, drawers, shelves, pull-down rails and lights.

A full-height fitted storage run across a hall wall, two tall doors in bare board with pale green panels either side of an open bay holding shelves, a timber top and a small two-door cupboard, all under a bare timber cornice on a flagstone floor.

Fitted hall storage run, Horsham

Horsham

A full-height run along one hall wall: a tall cupboard at each end with a hanging rail and shelves, and an open bay between them over a low cupboard.

Looking down from the head of the flight over the finished landing balustrade of white posts with timber caps, oak handrails and clear glass panels, with the hall floor visible below.

Glass and oak stair balustrade, Horsham

Horsham

A dark timber and metalwork balustrade replaced through the flight and the landing with white newel posts, oak rails and clear glass, and the space under the stairs fitted out.

A new pale oak back door hung in an old brick opening, four glazed panes over a boarded panel with a small cat flap low in it, sloped boards under the glazing and across the foot, and a black iron handle, boss and keyhole plate on the stile.

Oak back door to the old door's pattern, Horsham

Horsham

A dark, weather-worn timber back door replaced with a new oak one made to the same pattern, with the same black ironwork on the face and a cat flap back in the boarded panel.

A tall, slim shelving unit finished in a warm honey tone, standing on a bare workshop floor in front of a dust sheet, with open compartments of several different sizes and no back panel behind them.

Open shelving room divider, Horsham

Horsham

A tall, open-backed shelving unit with staggered compartments, standing out into a room to divide it without shutting the light out.

A finished oak porch screen in a brick opening: a panelled, studded oak door on black strap hinges, a glazed light either side, and a glazed head of three panes rising to a point under the gable.

Oak porch screen and door, Horsham

Horsham

An oak screen built into a porch opening: a panelled, studded door between two glazed lights, under a head that rakes up to a point below the gable.

Two alcoves either side of a newly built chimney breast, each with a three-door base cupboard and two lit floating shelves above, the alcove backs painted dark blue while the cabinetry is still bare board.

False chimney breast and alcove units, Horsham

Horsham

A flat, bare wall in Horsham: a false chimney breast built to take an electric fire, and an alcove unit built into each of the two spaces that left.

A dressing room lined on two walls with full-height painted wardrobes meeting in the corner, over-boxes carried up to the cornice and recessed lights set into the plinth.

Fitted corner wardrobes, Horsham

Horsham

Two walls of full-height wardrobes turning a corner, with fitted interiors, over-boxes to the cornice and lighting set into the plinth.

An oak staircase climbing to the right, square balusters under a moulded handrail, with the dark beams of an older timber frame crossing overhead.

Oak staircase and balustrade, Horsham

Horsham

An oak stair and balustrade built into a house with an exposed timber frame overhead.

What a shared wall does to the programme

A loft conversion in a Horsham terrace is a party wall job before it is a carpentry one. Cutting in a steel, taking a chimney breast out, raising a wall to form a gable — each needs notice served on the neighbour, and the notice period is the thing that moves the start date, not the work.

That is scheduling rather than difficulty. The point is that it belongs in the programme at the quotation, not discovered in week three. A price that has not accounted for the notice, the permit and the carry-in is not a price. It is an optimistic guess.

Horsham stone, and the one pit still cutting it

The stone the town is named for is a flaggy, calcareous sandstone out of the Weald Clay, split into bands roughly ten to thirteen centimetres thick. It comes from an arc of quarries around the town, and once exposed it hardens and lasts for centuries.

Commercial extraction had largely stopped by the 1880s and regular quarrying ended in the 1930s. One pit still works it: Nowhurst, reopened in 2004. That matters on a repair, because a slab roof needing twenty replacements is a sourcing question before it is a roofing one, and the answer is a single quarry rather than a builders’ merchant.

Water neutrality, and which jobs it actually catches

Since 2021 the Sussex North water supply area has been under a water neutrality requirement imposed by Natural England: no development permitted that increases mains water use overall.

Two things are worth being plain about. It is not a Horsham peculiarity — it covers the whole supply area, Pulborough and Storrington included. And it bites on development creating a new dwelling, not on an ordinary extension, kitchen or loft. If the job adds a bathroom to a house that already exists, this is not the constraint standing in the way. Anyone telling a homeowner otherwise is talking them out of work they are entitled to have done.

The porch on the front of a Horsham house

The oak framed porch here is the town’s own finished job: green oak posts and curved braces carrying a single-pitch clay tiled roof over a front door. On a street frontage the frame is the whole statement, so the jointing is cut to be looked at rather than covered.

Inside the same houses the work is joinery — a false chimney breast with alcove units built to a room whose walls are not parallel. Both are the same answer to the same fact: in a town where floor area is finite, what gets added is built to the inch rather than bought to a standard size.

In a town, the calendar is the constraint

Horsham town had no parish council until Horsham Town Council was created on 1 April 2025 — the centre, Denne, Forest and Trafalgar, was unparished, and a business-led neighbourhood forum filled the gap instead. It is an unusual bit of local government, and it is a reminder that in the middle of a town the constraints on a job are administrative as often as they are structural.

Permits, notices and access windows are all lead time. On a village job they are minor. Here they are the programme, and they are cheapest to settle before anything is ordered. Work in Cuckfield and Pulborough runs to a different rhythm for exactly that reason.

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Builders and joiners in Horsham. Terraces and party walls.

Building and joinery work in Horsham

Truss roof, Horsham

Oak framed porch, Horsham

Charcoal sliding-door wardrobes, Horsham

Fitted hall storage run, Horsham

Glass and oak stair balustrade, Horsham

Oak back door to the old door's pattern, Horsham

Open shelving room divider, Horsham

Oak porch screen and door, Horsham

False chimney breast and alcove units, Horsham

Fitted corner wardrobes, Horsham

Oak staircase and balustrade, Horsham

What a shared wall does to the programme

Horsham stone, and the one pit still cutting it

Water neutrality, and which jobs it actually catches

The porch on the front of a Horsham house

In a town, the calendar is the constraint

Services in Horsham

Bespoke Fitted Furniture

Oak Frame Structures

Hand Cut Roofs & Trussed Roofs

Extensions & Loft Conversions

Renovations & Conversions

Bespoke Kitchens

Tell Tom about the job.

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