Modern insulated garden office with bifold doors in West Midlands
    Garden Offices

    Your Quiet, Focused Workspace — In The Garden.

    A bespoke, year-round garden office designed around the way you actually work — with insulation, electrics and heating available as upgrades. Reclaim your spare room. End the commute. Sharpen your focus.

    Fixed price inc. VAT
    10-year guarantee
    Installed in 3-5 days

    Space to think

    Who Is This For?

    A LouMil garden office gives you a proper home-working setup without losing a bedroom or taking over the dining table. Perfect for business owners, remote workers, and freelancers across the West Midlands, Worcestershire, Birmingham and the surrounding areas.

    Each garden office is designed around how you actually work: desk layout, storage, lighting, sockets, data points and even air conditioning if you want it.

    Selected office builds

    Our Garden Office Projects

    Bespoke garden office interior with insulation and electrics - project 1

    Included in your build

    What's Included

    01Insulation & plastering available for year-round comfort
    02Electrical package with heating available as an upgrade
    03High-quality doors and windows
    04Bespoke design to suit your work style
    05Data points and socket positioning (with electrical package)
    06Optional air conditioning
    0710-year structural & roof guarantee
    08Planning permission guidance

    Construction detail

    Typical Build Specification

    Every garden office includes the timber structure, EPDM rubber roof, uPVC French doors and two windows as standard. Here's a typical fully-specified build once popular upgrades are added:

    01Insulation & plastering (available as an upgrade)
    02Wall-mounted electric heater (with electrical package)
    03Double PVC French doors (double-glazed)
    04Fire-rated LED downlights (with electrical package)
    05Two PVC windows (double-glazed)
    06Double sockets throughout (with electrical package)
    07Composite cladding upgrade available (metal sheet standard)
    08External wall lights
    09EPDM rubber roofing
    10Consumer unit and armoured cable (with electrical package)
    11uPVC fascias, soffits, guttering
    12Flooring options available

    Pricing: Every garden office is individually priced based on size and specification. Contact us for a free, no-obligation quote.

    Garden offices typically start from £9,000 inc. VAT.

    Every building is bespoke. We'll design yours around your workspace requirements and preferences.

    Built as standard

    Why Choose LouMil Garden Buildings?

    We build garden rooms the way they should be built – properly insulated, professionally finished, and designed to last.

    Premium Build Quality

    Heavy-duty timber frame construction built to last decades, not years. Every joint, fixing and finish is done properly.

    Full Insulation

    Walls, floor and roof fully insulated with proper membranes. Warm in winter, cool in summer – a real room, not a shed.

    EPDM Rubber Roofing

    High-quality EPDM roofing as standard with 20+ year lifespan. Fully watertight, no leaks, no maintenance worries.

    Electrics & Heating Included

    Full electrical installation, lighting, sockets and heating all included. Ready to use from day one.

    Local West Midlands Team

    Hands-on West Midlands team — installing across the UK. You deal with the same people from enquiry to handover, never a sales rep.

    10-Year Structural Guarantee

    Full 10-year guarantee on the structure. We stand behind our work and we're here if you ever need us.

    Built By Our Own Team

    No subcontractors, ever. The same people who quote your job are the ones who build it on site.

    Fixed-Price Quotes

    Clear, fixed-price quotes with no hidden extras. The price we quote is the price you pay.

    Start your project

    Ready to Create Your Perfect Garden Office?

    Choose your size, build your specification and see your fixed price online in minutes — no waiting on a callback.

    Local knowledge, national installation

    Garden Offices Across the West Midlands

    We install bespoke garden offices throughout the region. Find your local area:

    Real builds

    Garden offices we have built

    Real completed projects, photographed after handover. Sizes and specifications are on each case study.

    Garden Office Buying Guide

    How To Specify A Garden Office That Works All Year

    Sizing your office around how you actually work

    A single-desk office with storage works comfortably from 3m x 2.5m. Add a second desk, a meeting chair or a client-facing area and 4m x 3m is a better starting point. If you plan to hold meetings or run a small team, look at 5m x 3.5m upwards so the space does not feel cramped once furniture is in.

    Think about the layout before the size. Where the desk sits relative to the doors determines glare on your screen, whether you are on camera with your back to a window, and how much usable wall you have left for shelving.

    • 3m x 2.5m — single desk, chair and storage unit
    • 4m x 3m — desk, seating area and filing or shelving wall
    • 5m x 3.5m — two workstations plus a meeting table

    Broadband, power and connectivity

    Reliable connectivity is what separates a usable office from an expensive shed. In most gardens a good mesh Wi-Fi node handles it, but for a building further from the house, or where the walls are heavily insulated, a hardwired ethernet run is the reliable option. We can run data cable alongside the armoured power cable during installation — far easier than retrofitting later.

    Our optional electrical package includes armoured cable from the house consumer unit, its own protected circuit, double sockets, fire-rated LED downlights and a thermostatic heater. Tell us where your desk will sit and we position sockets accordingly.

    Acoustics, light and video calls

    Insulation, when selected, does double duty: it keeps heat in and outside noise out. Traffic, neighbours and garden noise drop away noticeably once you close the door, which matters if you are on calls all day.

    For light, north-facing glazing gives soft, even daylight with minimal screen glare. South-facing glazing is brighter but benefits from blinds and, in some builds, an air conditioning unit to control summer heat gain.

    Tax, business use and resale

    Many clients ask about claiming the cost through their business. Rules vary depending on your structure and whether the building is used exclusively for work, and there can be capital gains implications on sale — always take advice from your accountant before deciding how to buy.

    On resale, a properly built garden office — insulated and electrically connected — is a genuine selling point. Estate agents routinely list them as additional usable space rather than as a garden building.

    Get your instant price

    Garden Office FAQs

    Practical answers for anyone planning to work from the bottom of the garden.

    Do I need planning permission for a garden office?

    Usually not. A garden office normally falls within permitted development if it is single storey, no more than 2.5m high within 2m of a boundary, not forward of the principal elevation, and used incidentally to the dwelling. Conservation areas, listed properties and some estate covenants change this, so we check before quoting.

    Will I get decent Wi-Fi in the garden office?

    In most gardens a mesh node or Wi-Fi extender is enough. For guaranteed speed we recommend running an ethernet cable at the same time as the power cable during installation — it is inexpensive at build stage and gives you a fully reliable connection.

    How much does a garden office cost?

    Prices depend on size, cladding and glazing, but every LouMil quote is a fixed price covering the structure, cladding, doors, windows and installation. Insulation, electrics, heating and flooring are options you add in our online calculator, which gives an instant figure for your chosen specification.

    Can I use it in winter?

    Yes, if you choose insulation and a thermostatic heater in your specification. Double-glazed doors and windows come as standard, and most clients with heating installed leave it on a low frost setting overnight so it is warm first thing.

    Is a garden office cheaper than an extension?

    Typically yes, and considerably faster. There are no building regulations sign-offs for a standard incidental-use garden office, no scaffolding, and no months of disruption inside your home. Most installations are complete within 3-5 days.

    Do you install garden offices nationwide?

    Yes. We design, build and install nationwide across the UK using our own installation team, so the same people who build your office are the ones who fit it.