Do I need planning
permission?

You're not alone in asking — and most planning setbacks are avoidable if you catch them early. Take the free 60-second assessment and get an instant read on where your project stands, plus what to do next.

01 · Why it works The planner

Planning permission, from the other side of the desk.

Tom — Chartered Town Planner (MRTPI)
Tom — Chartered Town Planner (MRTPI · MISEP)
500+
500+ homeowners advised across England
Householder refusals · England
17,000+
planning applications by homeowners are refused every year — most for reasons that were knowable, and fixable, in advance.
Estimate from GOV.UK official statistics: ~159,600 householder decisions in the year to June 2025, ~89–90% granted. Figures rounded.
Why it matters
Most consultants tell you what to write. I can tell you what the officer will think — because for 9+ years, that officer was me.
Tom · MRTPI · Chartered Town Planner

I've sat on both sides of the planning desk.

For 9+ years, I was a planning officer inside a Local Planning Authority. I read the applications, sat in on committees, and watched plenty of well-intentioned schemes succeed — and fail — for reasons most homeowners never see coming.

Now I work for the other side of the desk. Most of my clients are extending a family home, converting a loft, replacing an outbuilding, or trying to build in a tricky garden. Many arrive anxious — they've heard the refusal stories, or already had a knock-back and don't know what went wrong.

My job is to tell them straight: what'll fly, what won't, and what's actually worth fighting for.

See case studies →
02 · In their words Homeowner results

Real homeowners.
Real outcomes.

03 · What I help with Specialties

Built for homeowners,
not corporate developers.

i.

House extensions & alterations

Single-storey. Double-storey. Side-return. Wraparound. I'll tell you what your council will actually accept — before you spend thousands on drawings.

ii.

Loft conversions & dormers

Hip-to-gable. Mansard. Dormer. Whether it's permitted development or needs full permission, I'll find the cleanest route through.

iii.

Outbuildings & garden rooms

Studios, annexes, gyms, granny flats. The rules around what counts as "incidental" trip people up constantly. I'll keep you on the right side of the line.

iv.

Refused before? Appeals.

A refusal isn't the end. I'll read the decision notice the way the inspector will, work out what's actually winnable, and tell you straight if it isn't.

v.

Self-builds & garden plots

Subdividing. Infill plots. Replacement dwellings. The borderline cases — where good planning advice matters most.

vi.

Lawful Development Certificates

In plain English: proving what you've built is allowed, or that what you want doesn't need permission at all. Hugely valuable if you're selling, too.

05 · Common questions What homeowners ask

Things homeowners always ask me.

Do I actually need planning permission for this?+
Often the first and most useful question. Plenty of work falls under permitted development — meaning no application is needed — but the rules are full of small traps (curtilage, designated areas, prior approvals, the 4-year rule). A short call usually tells us whether you need permission, whether you'd benefit from a Lawful Development Certificate, or whether you can simply crack on.
I've already been refused — is there anything I can do?+
Often, yes. Refusals fall into three buckets: fixable (the scheme needed minor changes), strategic (the application was framed wrong), and genuinely unwinnable. I'll read the officer's report the way an inspector will and tell you honestly which one you're in. Plenty of refused schemes get through on the second attempt — but only if the right thing changes.
How much does it cost?+
Start for free: the 60-second assessment gives you an instant read on where your project stands, at no cost. From there, two fixed-price options match most needs — the Planning Intelligence Snapshot at £199 is a full written planning view of your site and scheme, and the Premium Strategy Session at £395 is a focused one-to-one to plan the smartest route through. No hourly clocks, no surprise extras — you see the price before you commit.
Will you tell me if my project is a long shot?+
Yes — bluntly. Telling you something will get approved when it won't is the most expensive favour anyone can do you. I'd rather lose the work than walk you into a refusal. If your scheme needs to change to stand a real chance, I'll say so on the first call.
Do I still need an architect?+
For most projects, yes — they handle drawings, design, and (if needed) building regs. What I do is different and complementary: I work out what to apply for and how to frame it so it gets approved. Many of my best clients come to me before instructing an architect, so the brief is right from day one.
How long does the whole process take?+
Once an application is submitted, councils have eight weeks to determine a householder application (thirteen for larger ones). My side is faster: the free assessment is instant, a written Snapshot turns around in a few working days, and a Strategy Session is usually booked within a week. I'll always give you a realistic timeline up front — not an optimistic one that doesn't survive contact with the council.
Get in touch

Got a project in mind?
Let's talk it through.

Twenty minutes. No pitch. No pressure. Just an honest answer on whether your idea is worth taking forward — and if it is, exactly how to give it the best shot.

Tom · MRTPI · MISEP · planwiser.uk