- Planning authority
- London Borough of Brent
- Postcodes
- HA0, HA9, NW2, NW9, NW10
- Noon sun, 21 March
- About 38°
- Shadow from a 5 m eaves line
- About 6.3 m
- Planning plan
- Local Plan
- County
- Greater London
Brent: light, access and policy
People living next door are consulted on every planning application, and across HA0, HA9, NW2 and NW9 that applies to a family annexe just as much as to a new house. Their privacy, outlook and light carry real weight with the London Borough of Brent. A design that keeps upper windows away from adjoining gardens, uses obscure glazing where it has to, and leaves a planted margin along the boundary gives the council fewer reasons to refuse. A quiet word with the people either side before the application goes in is often worthwhile too.
The next steps, locally
The next step is a conversation, by phone or through the form, about your garden in Brent and who the new home is for. We check access, title, the main planning constraints and any CIL position for your address, then tell you whether an annexe, a separate home or neither looks realistic. If neither does, we’ll say so and explain why.
Free plot appraisal
We look at your plot, access and the planning picture from the desk, talk through who will live in the new home, and visit if it looks viable. There’s no cost and no obligation.
Survey and design
A measured survey, then a design built around the person moving in: step-free routes, a ground-floor bedroom if needed and privacy for both households. You get a written quote after design and survey.
Planning and approvals
We prepare and submit the planning application and manage it with the council, which makes the decision. Before work starts, approval under the Building Regulations is in place and any CIL exemption has been claimed.
Build and handover
We build while you carry on living next door, with access, deliveries and working hours agreed up front. At handover you get the completion certificate and the paperwork you’ll need for council tax, lenders and any VAT claim.
Worth checking early
- CIL exemptions are lost if work starts before the claim is made, and can be withdrawn if the home is sold or let within three years.
- Planning is the council’s decision, and an annexe is not a way round the rules that apply to a new house.
- Family plans change: agree ownership, costs and what happens if circumstances change in writing, with a solicitor.
Brent: questions to ask
How much garden do I need for a family home in Brent?
There’s no fixed figure. A single-storey annexe close to the house can work on a smaller plot than a separate dwelling, which needs its own garden, parking and access. What matters is whether the London Borough of Brent can be satisfied on privacy, daylight and the space left for both homes. The free appraisal gives you a first view based on your plot’s actual shape and access.
How long will building work disrupt my home in Brent?
A single garden home usually takes several months on site, with the noisiest work, such as groundworks, drainage and heavy deliveries, concentrated near the start. We agree working hours, access and parking with you up front, and with the people next door where it affects them, so your household knows what each week will look like.
Do I need planning permission for a granny annexe in Brent?
Yes, almost always for a detached annexe with its own kitchen, bathroom and bedroom. The London Borough of Brent will treat it as accommodation linked to your home and will usually add a condition so it can’t be let or sold separately. A garden building used only as a home office or gym is a different matter, but sleeping and cooking take it beyond those allowances.
Is CIL payable on a family home in Brent?
Only if the London Borough of Brent has adopted the Community Infrastructure Levy, which its website will confirm, and we check it for you during the appraisal. Where it applies, self-build and residential annexe exemptions exist, but both must be claimed before work starts and can be withdrawn if the home is sold or let within three years of completion.
Other options in Brent
- Plot feasibility and design
- Planning promotion for your garden plot
- Corner and side plots
- Garage courts and yards
- Garden plot option agreement
- Combine gardens with your neighbours

