The spare room is now an office, the kitchen table is a packing station, and you’re wondering whether any of this is actually allowed. Can you run a business from home legally in the UK? The short answer is: usually yes — but there are four permissions to check (planning, tenancy/mortgage, insurance, and tax), and skipping them causes real problems. Here’s the complete legal checklist.

Millions of UK businesses operate from home — it’s the most common business premises in the country. The law is generally accommodating; the issues arise from contracts (your tenancy, your mortgage, your insurance) rather than criminal law. Let’s work through each one.

Can I Run a Business From Home in the UK Legally?

Running a business from home does not normally require planning permission — provided the business use remains ancillary to the residential use. In practice, you’re fine without permission if:

• The house remains primarily a home — you’re living there, not running a commercial operation that happens to have a bed in it.
• There’s no significant impact on the neighbourhood — no constant deliveries, no customer traffic, no noise, no signage, no employees coming and going.
• You’re not making material external changes (building a separate workshop, erecting signage, converting the garage into a shop).

You likely DO need planning permission (or a lawful development certificate) if: customers/clients regularly visit, you employ staff working from the premises, there are frequent commercial deliveries (vans, not the postman), you make noise/smells (workshops, commercial kitchens, music teaching with amplification), you put up signage, or you’ve built/converted structures specifically for the business.

What to do: if you’re borderline, contact your local council’s planning department — many offer free pre-application advice. Getting a Lawful Development Certificate (£100–£250) gives you formal confirmation the use is legal, which is valuable if neighbours complain later or you sell the house. Gov.uk’s running a business from home guidance summarises the position.

Business rates vs council tax

Related to planning: if part of your home is used exclusively for business (a dedicated office, a workshop), that part may become liable for business rates instead of council tax. In practice:

• Working from a spare bedroom desk: no issue — it’s still domestic use.
• A room used exclusively as an office: technically rateable, but the Valuation Office Agency rarely pursues home workers for single rooms. The risk rises with dedicated commercial spaces (converted garages, outbuildings used solely for business).
• Small business rate relief means most small home businesses would pay £0 in business rates anyway — but you’d need to register.
• Working from home also affects capital gains tax when you sell the house — see the tax section below.

2. Tenancy and Mortgage: Check the Contract

Renting

Most assured shorthold tenancy agreements prohibit business use without the landlord’s written consent — and “business use” is often defined broadly. Get permission in writing before starting. In practice, landlords usually agree for quiet, low-impact businesses (freelance desk work, online retail without stockpiles) — especially if you offer reassurance about insurance and no customer visits. They may refuse for anything involving visitors, stock storage, or alterations. Don’t just hope they won’t notice — breach of tenancy terms is grounds for eviction.

Mortgage

Most residential mortgages require you to inform the lender about business use, and some prohibit it. Again, quiet desk-based businesses are usually fine with a quick notification; the lender mainly cares about (a) the property remaining primarily residential, and (b) their security not being affected. A few lenders charge a small admin fee or add a consent letter. Buy-to-let landlords with tenants running businesses: your landlord insurance may be affected — disclose it.

Leasehold flats

Check your lease — many prohibit business use or require freeholder consent. Leasehold restrictions can be stricter than rental tenancies, and breaching them has serious consequences.

3. Insurance: Disclose It (Non-Negotiable)

As covered in our home business insurance guide: standard home insurance typically excludes business activities and may be voided entirely by undisclosed business use. You must:

• Tell your home insurer about the business — they’ll adjust the policy or confirm you’re covered.
• Get business cover for equipment, stock, and liability — home contents won’t stretch.
• Check whether clients visiting affects your public liability position.

This is the permission people skip most often, and the one with the worst consequences — discovering your insurance is void after a fire or burglary is catastrophic.

4. Tax: What Changes When You Work From Home

Allowable expenses

Good news: you can claim home office costs — either the £6/week flat rate or actual apportioned costs. Our sole trader expenses guide covers the detail. Keep records from day one.

Capital Gains Tax on your home (the trap)

Here’s the one that surprises people: your home is normally exempt from CGT under Private Residence Relief — but the portion used exclusively for business may lose that relief. Example: you use one room of an eight-room house exclusively as an office for 10 years, then sell at a £200,000 gain. Roughly 1/8 of the gain (£25,000) could be chargeable to CGT.

The workaround: don’t designate any room as exclusively business — a room that’s “mainly an office but also the guest room” generally preserves full relief. This is legitimate and widely used; just be honest about actual use. If you’re planning significant exclusive business use, take professional advice — the CGT at stake can dwarf the income tax saved on expenses.

VAT and business rates

As above: exclusive business use can trigger business rates liability (usually £0 after small business relief, but register properly). VAT-wise, home office costs are input VAT like any business expense if you’re registered — see our VAT registration guide.

5. Sector-Specific Rules

• Food businesses: must register with your local authority (free, at least 28 days before starting) and comply with food hygiene regulations — inspection will follow. Your kitchen becomes a regulated food premises.
• Childminding: must register with Ofsted (or a childminder agency) — illegal to operate without it.
• Personal care (tattooing, piercing, acupuncture): local authority registration/licensing required.
• Animal-related (breeding, boarding): licensing under animal welfare regulations.
• Financial services, legal advice: FCA/SRA regulation applies regardless of premises.
• Data protection: handling customer data from home still requires ICO registration (£40–£60/year) and UK GDPR compliance.

The Home Business Legal Checklist

1. Planning: low-impact desk work — no permission needed. Customers, staff, alterations, noise — talk to the council.
2. Tenancy/mortgage/lease: read the contract; get written permission where required.
3. Insurance: disclose to home insurer; get business cover.
4. Tax: claim home office expenses; watch the CGT exclusive-use trap; check business rates position.
5. Sector rules: food, childcare, personal care, animals, finance — check registration requirements.
6. ICO: register if handling personal data.
7. Health & safety: basic obligations apply — risk assessment if you employ anyone or have visitors.

For most freelancers and online businesses, this is an afternoon’s admin: notify the insurer, check the tenancy/mortgage, register with ICO, and you’re legal. The businesses that get into trouble are the ones that scale up impact (visitors, staff, stock, noise) without revisiting the permissions. Check once at the start, re-check when the business changes, and home will remain the cheapest, most convenient premises you’ll ever have.