Prime Buildings & Developments
Loft conversion en suite with skylight and marble tiles in Northampton

Loft Conversionsin NorthamptonUnused Roof Space Turned Into Rooms

Add a bedroom or workspace without losing garden, built by one team with structural and fire-safety requirements handled properly.

Service overview

What loft conversions involve

What it is

A loft conversion turns the roof space into a habitable room, such as a bedroom, office or playroom, with a new floor, insulation, windows and a staircase.

Who it’s for

It is for Northampton homeowners who need more space but want to keep their garden.

When you need it

It makes sense when your loft has enough head height and you need an extra room.

Why it needs a professional

Loft conversions involve new floor structures, sometimes steel, a safe staircase, insulation and fire-safe escape routes, all covered by Building Regulations.

Get it wrong and it costs you

What happens when loft conversions are rushed or done cheaply

Weak floors

Existing ceiling joists aren’t designed to be floors.

Fire safety

Converting a loft adds a storey, which affects escape routes.

Poor insulation

Rooms that are too hot or cold.

Head height

Stairs must have adequate head height.

Common mistakes homeowners make

  • Underestimating floor strengthening.
  • Ignoring fire safety.
  • Not checking head height.

Our process

Five clear steps, start to handover

  1. 01

    Initial enquiry & consultation

    We talk through your requirements, plans, drawings or ideas, so we understand what you want the finished space to do.

  2. 02

    Survey & quantity surveyor estimate

    We assess the site, then a professional quantity surveyor prepares your estimate from the real scope. It is free for standard projects; on rare, unusually complex schemes a detailed estimate is £250 including VAT, and we tell you before any work on it starts.

  3. 03

    Pre-commencement

    Your start date is fixed and the work is scheduled. The first payment is due 72 hours before we start on site, not weeks in advance.

  4. 04

    Staged construction

    The work is delivered in 4 to 7 clearly defined physical stages, such as concrete footings, brickwork to roof plate, watertight roof and plasterboard complete. Each stage is invoiced only once you can see it done.

  5. 05

    Practical completion

    Final inspection, Building Control sign-off where applicable, handover, and a small remaining balance settled on completion.

Why homeowners choose Prime

What you get when we build your loft conversion

Honest pricing

We give estimates, not ‘fixed quotes’ that grow later. A quantity surveyor builds the figure from the real scope of your home.

You pay for what you can see

Between 4 and 7 stage payments, each tied to a visible milestone. You are never paying far ahead of the work.

One team, every trade

Groundworks, steel, brickwork, joinery and finishes are handled by one team, so nothing falls between separate contractors.

Structural work done to calculation

Steelwork follows engineer’s calculations, from our partner local structural engineering firm or your own engineer.

Cover if something goes wrong

£5,000,000 public liability insurance, employers’ liability for all on-site personnel, and an optional insurance-backed guarantee at 15% of the final project cost.

You always know what’s next

Rick stays in contact from the first visit to handover. Reviewers repeatedly mention clear day-to-day updates and tidy, considerate sites.

In detail

Loft Conversions in Northampton: methods and options

We work on homes only, never commercial property, across Northampton and the surrounding Northamptonshire towns and villages.

A new floor structure

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Existing ceiling joists were designed to hold up a ceiling, not people and furniture. New floor joists are installed alongside or above them to carry the load of a habitable room, without overloading the ceilings below.

Steelwork where the design needs it

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Some loft conversions need steel beams to carry the new floor or to support the roof where structural timbers are altered. We work with a partner local structural engineering firm, or from your own engineer’s calculations, and install what is specified.

The staircase

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A new staircase is needed to reach the room, and where it lands affects the floor below. Head height over the stairs and a safe route out in a fire are both covered by Building Regulations, so the position is planned early.

Insulation and comfort

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Roof spaces get hot in summer and cold in winter. The new room is insulated to Building Regulations so it is comfortable to use and doesn’t drive up heating bills.

Carpentry and sign-off

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Rick moved into carpentry at 21, and first and second fix joinery, stud walls, floors, doors and finishes, is carried out by our team. Building Control sign-off forms part of practical completion where applicable.

Related services

Areas we cover

Our work

Recent loft conversions projects

loft conversion en suite with skylightloft conversion bathroom with rooflight
View building projects in Northamptonshire →

Before you start

Planning, regulations and living at home during loft conversions

How your estimate for loft conversions is put together

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We don’t publish package prices, because no two homes are the same: the age of the house, the ground it sits on, where the drains run, what is hidden in the walls and the finish you want all change the cost. Instead, after a site survey, a professional quantity surveyor prepares your estimate from the real scope of work. That means labour, materials, structural elements and the order of work are all accounted for before you agree anything. For most projects this estimate is free, because we pay for the quantity surveyor’s time. Only for unusually large or complex schemes is a detailed estimate charged, at £250 including VAT, and we always tell you before any work on it starts.

We use the word “estimate” deliberately. Existing homes often reveal things once they are opened up, and pretending otherwise with a “fixed price” usually means the number either hides gaps or carries a large margin for risk. When something does change, we talk about it openly with you and agree the way forward together before carrying on.

What a stage payment looks like

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Your project is divided into 4 to 7 milestones depending on its size and value. Typical examples are concrete footings complete, brickwork up to roof plate, roof covering watertight and plasterboard complete. Each milestone is something you can walk out and see for yourself. Only then is that stage invoiced. The first payment falls 72 hours before we start on site, and a small remaining balance is settled at practical completion and handover, so you are never paying far ahead of the work in front of you.

Planning permission and permitted development

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Planning permission is about what a building looks like and how it affects its surroundings. Some residential work can be carried out under permitted development rights without a full planning application, while other projects need approval from the local council. Rules differ for conservation areas, listed buildings and homes where permitted development rights have been removed by an earlier condition. If you already have approved plans, we build to them. If you don’t, we’ll talk through the options at your first consultation.

Building Regulations are separate from planning

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Even where planning permission isn’t needed, most structural and habitable work must meet Building Regulations. These cover structure, fire safety, insulation, ventilation and drainage. A Building Control inspector checks key stages, and on completion you receive the sign-off you’ll need when you come to sell or remortgage. Final inspection and Building Control sign-off, where applicable, are part of practical completion on every project we deliver.

The Party Wall Act

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If your work involves a wall shared with a neighbour, building on the boundary, or digging foundations close to a neighbour’s property, the Party Wall etc. Act 1996 usually requires you to give them formal notice before work starts. It’s worth raising early, because notice periods need to run before that part of the work can begin.

Living at home while we work

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Most of our customers stay in their homes throughout. Work is planned in stages so you know what is happening each week, who will be on site and what part of the house will be affected next. Reviewers regularly mention clear day-to-day updates and clean, considerate sites, the things that make living alongside a build manageable.

Questions to ask any builder

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  • Who prepares the price, and what exactly does it include?
  • How much is due before work starts, and when are the stage payments?
  • What insurance do you hold, and is a guarantee available?
  • Who is my day-to-day contact, and how will I be kept updated?
  • Do you work to structural calculations and arrange Building Control?

We’re happy to answer every one of these before you commit. Read about Rick and the team, see verified reviews, or request your estimate.

Local to Northampton

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We’re based at The Beren, Blisworth Hill Business Park, just south of Northampton, and carry out loft conversions across the town and the surrounding villages, from Towcester, Roade and Bugbrooke to Moulton, Brixworth, Daventry and Wellingborough. Back to the homepage or browse all services.

FAQ

Loft Conversions questions, answered

Does a loft conversion need planning permission?

Many fall under permitted development; some need planning. Building Regulations approval is needed.

Is my loft suitable?

We’ll assess it at survey stage.

Do you work with engineers?

Yes, a partner local firm.

How is it priced?

QS-prepared estimate, free for most projects.

How much will it cost?

Every home is different, so we don’t publish package prices. A professional quantity surveyor prepares your estimate from the real scope. For most projects that estimate is free; only for unusually large or complex schemes is a detailed estimate charged at £250 including VAT, and we’ll always tell you first.

Why an estimate rather than a fixed quote?

Changes often come up once work begins on an existing home. A QS-prepared estimate reflects the real scope, so you get an honest figure rather than a low number that grows later.

How do the payments work?

The first payment is due 72 hours before we start. You then pay in 4 to 7 stages, each invoiced only when that stage is visibly complete, with a small final balance at handover.

Is the work guaranteed?

An insurance-backed guarantee is available as an option, at 15% of the final project cost. We also hold £5,000,000 public liability insurance and employers’ liability insurance.

Do you take on emergency call-outs?

We carry out planned residential building projects rather than emergency call-outs. If you have a concern about your property, call Rick on 07704 675073 to talk it through.

Know the real cost of your loft conversion before you commit

Share the basics and Rick will call you to talk it through. Free QS-prepared estimate for most projects, no obligation.

FMB & Checkatrade members · £5M public liability · Pay only for stages you can see

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