Loft Southend — Loft Conversion Specialists in Southend-on-Sea

Loft Southend converts lofts across Southend-on-Sea and south Essex, and does nothing else. That focus matters more than it sounds. A loft conversion is a structural job, and what your roof will allow is decided by what is above your ceiling rather than by what you would like. We survey every roof before quoting, tell you honestly what it can take, and give you a fixed written figure.

Our Loft Conversion Services

Five conversion types, and the right one for your house is determined by the roof structure, the head height and where a staircase can land.

Dormer loft conversions build outward from the rear slope to create a flat-ceilinged room with proper head height across most of the floor. On the inter-war semis that fill Westcliff, Prittlewell and Southchurch, this is the most common answer and usually the right one.

Velux loft conversions fit rooflights flush into the existing slope, leaving the roof structure completely untouched. Where ridge height already allows a usable room, it is the cheapest route by a wide margin and there is no reason to spend more.

Hip to gable conversions square off a sloping end roof into a vertical gable wall. Inter-war south Essex has a great many hipped roofs, and they pinch the loft exactly where the staircase needs to arrive. The gable recovers the full width of the house.

Mansard conversions replace the roof structure entirely with a near-vertical rear slope, creating close to a full extra storey. It is the most substantial option and the only one that works where existing head height is too low for anything else.

L shaped dormer conversions join two dormers across a rear outrigger, using roof space above the back addition that is otherwise wasted. On the older terraces near the High Street it routinely produces two bedrooms and a bathroom.

Why Choose Loft Southend

• We survey before we quote. Head height measured from the ceiling joists, roof construction identified as cut or trussed, span direction checked, staircase position established. A quotation without those four things is a guess.
• Fixed written quotations. Structural calculations, Building Regulations submission, staircase and making good are inside the figure. We do not use provisional sums to make a number look competitive.
• We tell you when the answer is no. Some roofs are not worth converting, and we would rather say so at survey than at first fix.
• Coastal detailing as standard. Properties facing the estuary take driving rain and salt-laden wind, so cheeks, flashings and fixings are specified for exposure rather than to an inland detail.
• Approvals handled throughout. Structural design, Building Regulations, planning where required, and party wall notices where a shared wall is affected.

Areas We Serve

We work across Southend-on-Sea and the surrounding towns, and each has its own quirks worth knowing before you start.

Rayleigh is dominated by hipped-roof inter-war semis, so hip to gable work paired with a rear dormer is the standard answer. Rochford sits under the airport approach and around a conservation area, both of which shape what can be built. Benfleet climbs a hillside, and scaffold access on sloping plots is frequently what separates a straightforward job from an expensive one.

Canvey Island is bungalow country, where a conversion can nearly double the floor area but usually means replacing the roof rather than opening it up. Basildon is New Town housing built fast in the 1950s and 1960s, which means trussed roofs across much of the town and a different job entirely.

What a Loft Conversion Costs

Locally, a rooflight conversion starts around £28,000 and a full mansard reaches £105,000. The gap has little to do with finish quality and almost everything to do with roof structure, head height and whether the end is hipped.

Our 2026 cost guide breaks that down by conversion type with worked examples from real Southend streets, and the head height guide explains the single measurement that determines which options are open to you. If you are wondering about approvals, most conversions here need no application at all — the planning permission guide sets out where permitted development ends and what always applies regardless.

Getting Started

The useful first step is a survey. It takes about an hour, costs nothing, and there is no obligation. You will get a straight answer about what your roof can take and a realistic cost range before any money changes hands.

Guidance on Building Regulations for loft conversions, including structure, staircases and fire safety, is published by LABC.

You can call us on 01702 655 456, or request a free quote and we will come back to you within 24 hours. If you want to know more about how we work first, there is more about us here.