PrefabX Grand exterior
PrefabX modular home / Grand

A full three bedroom family home, unfolded in 2 to 3 days.

Two units joined into one large home. Three bedrooms, two bathrooms, a kitchen and a wide living room, with more than 80 square metres of finished space. The Grand is the whole family home in the range.

4.9/5 from 336 reviews
From £55,000 £355/mo, fixed price
01743 491181

Prefer to see one first? Book a show home visit

3

Bedrooms

80 m²

Floor area

2-3 Days

Installation

50 Year

Lifespan

Owner reviews

56 reviews of the Grand.

Part of 336 verified owner reviews across the PrefabX range, rated 4.9 out of 5.

4.9

Excellent

Based on 336 verified reviews

PrefabX Owner Reviews

Independently verified
Verified
“Our family had outgrown the house and a normal extension was going to take a year. The nightly rate it commands has made the numbers stack up brilliantly.”
O

Owen

4 May 2026 · PrefabX Grand · St Andrews

Verified
“We were nervous about spending this much without seeing it first, so the show home sealed it. It is genuinely the warmest, most comfortable space we have ever had. We could not be happier and would do it all again tomorrow.”
C

Chris

22 Jan 2026 · PrefabX Grand · Brecon

Verified
“I will be honest, I was sceptical about prefab until the Grand turned up. My mother loves having her own front door and her own space. I only wish we had done it sooner.”
GC

Gareth C.

18 Jan 2026 · PrefabX Grand · Chester

Verified
“A friend recommended PrefabX and I am so glad they did. The bedrooms are a good size and the living space is brighter than we expected. It is genuinely the warmest, most comfortable space we have ever had. Thank you to the whole team, you have been brilliant.”
PM

Philip Murray

18 Jan 2026 · PrefabX Grand · Tenterden

Verified
“Five stars is not enough for how happy we are with our Grand. Site prep ran alongside the build so there was no dead time waiting around. Ben, Rob and Dale were a pleasure to deal with throughout.”
SG

Stephen and Emma Grant

8 Jan 2026 · PrefabX Grand · Barnstaple

Verified
“I cannot quite believe how straightforward the whole process was. What sold us was being able to walk through a finished one before paying a penny. I would have liked a few more finish options to choose from, but the quality is spot on.”
CH

Charlotte H.

9 Dec 2025 · PrefabX Grand · Tenterden

Verified
“A friend recommended PrefabX and I am so glad they did. Delivery and installation were handled start to finish, we did not lift a finger.”
MS

Mark Stewart

5 Dec 2025 · PrefabX Grand · Dolgellau

Verified
“I found PrefabX after hours of Googling and the Grand caught my eye straight away. We run it as a holiday let and it has been booked solid since the day it opened. The only small thing was a short wait for our delivery slot, but it was well worth it in the end.”
SH

Sally H.

7 Nov 2025 · PrefabX Grand · Brecon

Verified
“Five stars is not enough for how happy we are with our Grand. It went up in a couple of days and there was barely any mess on site. It is warm, calm and quiet, exactly what we wanted from a home.”
TH

Tom H.

30 Oct 2025 · PrefabX Grand · Tenterden

Verified
“Our family had outgrown the house and a normal extension was going to take a year. The nightly rate it commands has made the numbers stack up brilliantly. It is warm, calm and quiet, exactly what we wanted from a home. Worth every penny and more.”
N

Neil

13 Oct 2025 · PrefabX Grand · Hexham

Verified
“We bought a plot in the countryside and could not face an 18 month site build. The nightly rate it commands has made the numbers stack up brilliantly. The quality is indistinguishable from a build costing three times as much. Worth every penny and more.”
I

Iona

13 Oct 2025 · PrefabX Grand · Buxton

Verified
“We bought a plot in the countryside and could not face an 18 month site build. It feels like a proper home from the moment you walk through the door. As an Airbnb it photographs beautifully, which is exactly what wins bookings. We are already telling everyone we know about it.”
GN

Gemma Nicholson

20 Sept 2025 · PrefabX Grand · Holt

Double the space, double the comfort. Your modern bungalow.

Is the Grand right for you?

Ideal for: Large family home, premium holiday let, multi generational living.

The Grand is for you if:

  • You need a full family home with three bedrooms and two bathrooms
  • You want more than 80 square metres of finished living space
  • You are housing multiple generations under one roof
  • You are building a premium let that sleeps a whole family

The layout

Every room, every dimension.

Grand floor plan

What is inside

  • 3 Bedrooms
  • 2 Bathrooms
  • Kitchen
  • Living room
  • Front and back door

Sizes and specification

Model L20
Unfold (L × W × H) 11951 × 6700 × 2548mm
Interior ceiling height 2350mm
Floor area 80.06 m²
Net indoor area 74.7 m²
Exterior wall thickness 85mm
R value 20
Windows and doors Triple glazed aluminium, blinds fitted free
Packaging 1 set in 40HC

Construction and performance

Built to last fifty years.

Every Grand shares the same engineered shell: reinforced steel, integrated PU foaming and an SGS tested envelope, rated to the structural standards below. A permanent building, not a temporary cabin.

3.0kN/m²

Wind load

1.5kN/m²

Snow load

2.0kN/m²

Floor load

0.5kN/m²

Roof load

9degree

Seismic intensity resistance

1hour

Fire resistance time

≥45dB

Sound insulation coefficient

50years

Life span

What the modular home is made of

Floor

  • 8mm custom SPC floor
  • 100mm high density PU insulation layer
  • 0.45mm weather resistant colour steel panel

Roof

  • 0.45mm weather resistant colour steel panel
  • 80 to 110mm high density PU insulation layer
  • 4mm SPC decorative panel

Exterior wall

  • 0.5mm flat groove metal cladding board
  • 75mm high density PU insulation layer
  • 4mm SPC decorative panel

Interior wall

  • 9mm inorganic fireproof board plus 4mm SPC panel
  • Steel frame plus 50mm insulation cotton
  • 9mm OSB structural panel plus 4mm SPC panel
PrefabX modular home manufacturing: laser cutting

Laser cutting

Steel profiles cut to precise tolerances

PrefabX modular home manufacturing: robotic welding

Robotic welding

Frames welded into a rigid steel structure

PrefabX modular home manufacturing: powder coating

Powder coating

Electrostatic coating for a 50 year finish

PrefabX modular home manufacturing: panel finishing line

Panel finishing line

Insulated wall and floor panels assembled

The offer

Everything you get. And what it is worth.

Every Grand arrives complete and guaranteed. The home, the full fit out, the installation and the guarantees that remove your risk are all included in one fixed price. Bought separately, here is what each part would cost you.

  • Engineered steel shell and structure, 50 year lifespan £48,000
  • Super insulated walls, roof and triple glazed aluminium windows and doors £24,000
  • Premium blinds fitted to every window and door, included free £2,400
  • Two complete bathrooms and fitted kitchen £20,000
  • Full electrics, plumbing and heating, installed £16,000
  • Delivery and 2 to 3 day professional installation £8,000
  • Fixed Price Guarantee, we absorb every overrun £8,000
  • On Time Guarantee, £100 a day credit if we are late £4,000
  • 10 year insurance backed structural warranty £6,500
  • Walk a finished home before you pay a penny £2,500
Total value if purchased separately £139,400+

The Grand, from

£55,000

All inclusive. £355/mo.

Price anchor

A traditional build of comparable size and spec costs £90,000 to £140,000 and takes 8 to 14 months. You get the same space, a higher build standard, and you save tens of thousands and the better part of a year.

An upgrade most charge extra for

Triple glazed aluminium windows.
With blinds fitted free.

Most prefab buildings, and most new builds, ship with double glazing. Your Grand comes with triple glazed aluminium framed windows and doors as standard. Quieter rooms, warmer winters and lower energy bills, built in. We also fit premium blinds to every window and door before it leaves the factory. No upgrade fee. No catch.

  • Triple glazed as standard

    Aluminium framed glazing on every window and door, never a paid upgrade.

  • Blinds fitted free

    Premium blinds on every window and door, included in your fixed price.

  • Warmer and quieter

    Three panes cut heat loss and outside noise, so running costs stay low.

  • Built to last 50 years

    Aluminium frames will not warp, rot or rust for the life of the building.

Return on investment

Got some extra room? Fancy some extra income?

Run the Grand as a holiday let or Airbnb and it can recover its cost just over a year. Three bedrooms sleep a whole family or group, which commands the highest nightly rate in the range. Demand for distinctive accommodation on Airbnb and Booking.com keeps these units busy all year.

£225

Nightly rate

68%

Occupancy

£55,845

Annual turnover

just over a year

Pays for itself in

Model your own return.

Adjust the nightly rate and occupancy for your location to see what the Grand could earn.

The lowest entry cost in the range, so a compact glamping cabin or one bed let recovers its outlay fast.

£110
£60£350
68%
30%90%

Estimated annual turnover

£27,302

Per month

£2,275

Pays for itself in

12 months

Based on an all in cost of £26,250 for the Studio, VAT included.

*Illustrative example only. Actual income depends on location, season and how you run the let.

Figures are an illustrative example, not a guarantee. Actual income depends on your location, season and how the let is run. Every PrefabX building can be financed, so you can spread the cost while the bookings come in.

Case studies

The Grand, out in the real world.

Recent Grand projects, delivered finished and put to work in very different ways.

A full three bedroom family home for a fraction of a site build, Brecon, Powys, a PrefabX Grand
Home

Brecon, Powys

A full three bedroom family home for a fraction of a site build

A family home for a fraction of a site build

A couple with a plot in the countryside wanted a proper family home, not a static caravan, and were quoted well over £100,000 for a traditional build. Two modular home units were joined into one wide bungalow with more than 80 square metres of finished space.

  • Three bedrooms, two bathrooms
  • Over 80 square metres finished
  • Super insulated for year round comfort
  • Fixed price, no overruns
“We were quoted over a hundred thousand for a normal build that would take a year. This is bigger, warmer and finished, and it cost a fraction of that.” A self build family

Installed in 2 to 3 days

The whole group under one roof, at the top rate, Aviemore, Highland, a PrefabX Grand
Home

Aviemore, Highland

The whole group under one roof, at the top rate

Top of the range nightly rate

This let needed to sleep a whole family or group to justify the highest nightly rate in the area. The Grand delivered three bedrooms, two bathrooms and a wide living room, warm enough to let through the Highland winter and earning all year.

  • Three bedrooms, two bathrooms, wide living room
  • Sleeps a whole family or group
  • Warm enough for winter lets
  • Commands the top nightly rate
“Sleeping a whole group lets me charge the top rate, and it stays booked right through winter. The numbers stack up better than any let I have run.” A premium holiday let group

Installed in 2 to 3 days

A whole family home, unfolded in a weekend, Hexham, Northumberland, a PrefabX Grand
Home

Hexham, Northumberland

A whole family home, unfolded in a weekend

Three generations, no building site

Three generations needed to live together without a year on a building site. The Grand joined two units into one large home with three bedrooms and two bathrooms, giving everyone room to breathe, unfolded and finished over a long weekend.

  • Three bedrooms and two bathrooms
  • Wide, shared open living space
  • More than 80 square metres
  • Unfolded and finished in days
“We have the space of a proper house and nobody had to live through a year of builders. It went up over a weekend and we moved straight in.” A multi generational family

Installed in 2 to 3 days

Zero risk

We take the risk. You take the building.

Fixed Price Guarantee

The price we quote is the price you pay. If anything costs more than we quoted, we cover it. Not you. Written into every contract.

On Time Guarantee

We give you a delivery date. We hit it. If we are late, you receive £100 credit for every day of delay. We have never paid out.

Quality Guarantee

Walk through a finished modular home before you commit a single penny. Open every cupboard. Check every joint. If it does not meet your standards, walk away.

10 Year Structural Warranty

2 year full coverage on all systems. 5 year structural. 10 year envelope warranty on roofing, thermal boundary and waterproofing. All backed by third party insurance.

Limited production slots

Production is allocated month by month. Current lead time is 4 to 6 weeks.

Each Grand is built to order on the line and shipped to your slot. When a month fills, it fills. If you want yours installed this summer, the time to lock in your fixed price is now.

Popular uses

What people build with the Grand.

More in the range

Explore the other layouts.

Finance available on every building, from £160 a month. Spread the cost and let the bookings pay it back. See finance options

Free download

Get the PrefabX brochure

Floor plans, pricing, full specifications, and real project photos. Everything you need to start planning your build.

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PrefabX modular home brochure front cover
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