Granny Annexe Specialists South East England
Studio Granny Annexe Exterior
Zero VAT250mm WarmWall Insulation10-Year Guarantee

The Studio Annexe

From £90,000

Complete and ready to move in. Zero VAT under the Caravan Act.

A self-contained home for one person who wants to stay close to family without giving up their independence. Open-plan layout with kitchen, bathroom, and living/sleeping area, all in 32 sqm.

10-Year Structural Guarantee
WarmWall 250mm Insulation
12 Week Installation
Family Business Since 2004

Practical Layout

At approximately 32 sqm, the Studio uses an open-plan layout with distinct zones for living, sleeping, cooking, and bathing. The space is sized for one person and designed to work for everyday life.

8m × 4m

Typical footprint

32 sqm

Living space

2.3m

Internal ceiling height

Open Plan

Living, sleeping & kitchen

Room Breakdown

Open-Plan Living/Sleeping
22 sqm
Kitchen Area
Integrated
Bathroom
4.5 sqm

Everything Included

The Studio price includes everything listed below. No hidden extras. The annexe is ready to move into on handover.

WarmWall 250mm Insulation

250mm thick walls with double insulation. U-value of 0.15 W/m2K, which is well above Building Regulations requirements. This keeps heating bills low and the annexe warm in winter, cool in summer.

Fully Fitted Kitchen

Base and wall units, worktops, sink, integrated oven, hob, extractor, and space for a fridge/freezer.

Bathroom

Walk-in shower (level access, no step), WC, vanity basin, heated towel rail, and chrome fixtures.

Heating System

Energy-efficient electric heating throughout, designed to work with our WarmWall insulation for minimal running costs. Each room has individual thermostatic control.

Complete Electrics

Full electrical installation with consumer unit, ample sockets throughout, LED lighting, smoke and CO detectors. Ready for TV, phone, and internet from day one.

Double Glazing

High-quality uPVC double-glazed windows and French doors. Energy-efficient, secure, and maintenance-free with a 10-year guarantee.

Interior Finish

Plastered and painted walls in your choice of colours, quality flooring throughout, skirting boards, architraves, and interior doors. Move-in ready.

Plumbing

Complete hot and cold water supply, waste connections, and all internal plumbing. Utility connections are quoted separately based on your garden layout.

External Finish

Insulated steel panel exterior with a choice of cladding finishes. Low-maintenance construction built to last 30+ years.

How It Works

From first call to move-in, the Studio annexe takes approximately 12 weeks.

1

Week 1-2

Site Visit & Quote

We visit your garden, discuss what you need, and give you a fixed-price quote.

2

Week 3-4

Design & Order

Finalise the spec, sign off the design, and manufacturing begins.

3

Week 5-8

Manufacturing

Your annexe is built in our workshop.

4

Week 9-10

Site Preparation

Groundworks and foundations prepared while we finish manufacturing.

5

Week 10-12

Installation

Annexe delivered, assembled, connected, and handed over.

Technical Specifications

External DimensionsApprox. 8m × 4m
Internal Floor AreaApprox. 32 sqm
Internal Height2.3m
Wall InsulationWarmWall 250mm system (U-value 0.15 W/m²K)
Floor Insulation150mm insulation (U-value 0.18 W/m²K)
Roof Insulation200mm insulation (U-value 0.16 W/m²K)
Windows & DoorsuPVC double-glazed (U-value 1.4 W/m²K)
ComplianceCaravan Act 1968 compliant (BS 3632)
Planning PermissionDual strategy: full planning permission + Lawful Development Certificate
VATZero rated (0%)
Guarantee10-year structural warranty
Life Expectancy30+ years with minimal maintenance

Frequently Asked Questions

Common questions about the Studio annexe. Can't find your answer?Our team is here to help.

Yes. At 32 sqm, the Studio has enough room for one person to live comfortably. The open-plan layout has separate zones for sleeping, living, cooking, and bathing. Several of our customers have told us they prefer it to their previous, larger homes because it's simpler to maintain.
"Dad loves his new place, we love having him close by. One year on it's literally paid for itself compared to care home fees, and is probably the best family investment we've ever made."

Verified Google Review, Kent

5-star Google review

Explore Our Annexe Range

Not sure which size is right? All three use the same build quality and WarmWall insulation.

Get a Free Quote

Book a free, no-obligation site visit. We'll look at your garden, talk through your requirements, and give you a fixed price for the Studio annexe.

Speak to our team

01689 818400

Or email us at info@grannexe.co.uk