Connah's Quay, Shotton, Queensferry, Hawarden, Buckley, Mold, Flint, Holywell and the villages between — drawings, planning and building regs from the specialist based right here in Deeside.
⚡ Get an instant estimate 📋 Book a £60 Initial Site Appraisal Meeting ⓘ Why an Initial Site Appraisal Meeting?Searching for a planning consultant in Flintshire for your extension? For householder projects, that's exactly what we do — the drawings, the planning application to Flintshire County Council, and the building regulation package, handled end to end for one fixed written fee. Mike has worked with Flintshire's planning department for 25 years.
Flintshire is home ground. Mike is based in Hawarden and has spent 25 years extending the county's homes — estuary-side semis in Connah's Quay and Shotton, newer estates in Buckley and Ewloe, and stone properties up towards Mold, Flint and Holywell. Welsh Permitted Development rules apply, the householder fee is £585 when permission is needed, and Flintshire County Council determines most householder applications within eight weeks. The estimator below is already set for Flintshire.
Once your fee is agreed, Mike returns and measures the house himself — no juniors, no outsourcing. This is the second visit; the earlier £60 Initial Site Appraisal Meeting comes off your fee.
Scaled drawings of your home as it is and as it will be — the documents your planning application stands on.
Prepared, submitted and handled for you — or confirmation you don't need one under Permitted Development, which saves you the council fee entirely.
The technical pack — structure, insulation, fire safety, drainage — that building control approves and your builder prices from.
Mike works to a fixed written fee, agreed before any work begins. Council fees are separate and paid directly — never through Mike.
| Item | Typical cost | Paid to |
|---|---|---|
| Mike’s fee — single storey extension | £750 – £1,400 | Mike (fixed, written) |
| Mike’s fee — two storey extension | £950 – £1,800 | Mike (fixed, written) |
| Planning application (if required) | £585 Wales / £548 Cheshire | Your council |
| Planning Portal service charge | £149 | Planning Portal |
| Building control (approx.) | £650 – £2,000 | Council / inspector |
Or just use it right here ↓
Mike's fee plus the council fees for planning and building control — the full professional stage, before a builder is involved. Two taps for a figure — no obligation.
Mike’s fee covers the complete design and approvals stage:
Why the range? Every home is different. The lower end covers a straightforward project — standard drawings, no planning application needed. The higher end covers larger or more complex work — a full planning application, more detailed drawings, or structural design to coordinate.
Before any work begins, Mike gives you a detailed written fee proposal — so you know exactly what you are paying and what it covers. The number you agree is the number you pay.
Only if planning permission is needed. Wales charges £585 for a householder application and Cheshire West & Chester £548 — the fee is set nationally, so it does not vary between Welsh councils. Paid directly to your council, never through Mike.
The service charge for submitting a planning application online. It also only applies if permission is needed, and it is charged per application submitted.
This one always applies, permission or not. It is calculated on floor area and subject to the final design — smaller projects sit toward the lower figure, larger ones toward the higher. Paid to the council's building control team or a private approved inspector, never through Mike, and he gets you an exact quote once the design is finalised.
* Only payable if planning permission is needed. Mike determines that at the Initial Site Appraisal Meeting — before you commit to anything.
Design and approvals only. This is what it costs to get your project drawn and approved — it does not include your builder’s costs for the actual building work.
If your project turns out to be Permitted Development, the council planning fee and the Planning Portal charge do not apply at all — up to £734 you simply do not pay. Mike checks that for free at the Initial Site Appraisal Meeting.
Read more about extension plans →
Already built it without approval? Regularisation →
Guide figures only. The £60 Initial Site Appraisal Meeting is not added to these figures — it comes off Mike's fee when you commission the work. Council fees correct at July 2026; building control charges vary by council and project — full details in the FAQs. Mike confirms everything in a written fee proposal before any work begins.
Or have Mike email this estimate to you — no obligation.
✅ Sent — your estimate is on its way. No obligation.
Couldn't send just now — call Mike on 07703 786 460 or email [email protected].
£60, and it comes off your fee when you go ahead. Mike comes to the property to understand the scope of what you want to do and advise you accordingly — then sends a written fixed fee afterwards.
Every planning application Deeside Architectural Design submits goes onto the council's public register — under the practice name, with the decision attached, permanently. It's free to search and it isn't curated by us. What the register cannot show you is the other half of the work: the projects that qualified as Permitted Development, needed no application at all, and saved the client the council fee. Those leave no public trace. So the number below is the part you can check — not the whole of it. Before you decide whether the fee above is worth paying, go and read it.
Submitted to Flintshire County Council under Deeside Architectural Design since 2010 — every one searchable, with its decision attached.
Many projects qualify as Permitted Development, need no application, and never reach the register. The 165 is the work that required permission — not the count of jobs done.
Deeside Architectural Design Limited, incorporated January 2010, and 25 years of drawings behind it. Companies House no. 07128221.
Open Flintshire's planning register, put Deeside Architectural in the Agent field, and read every decision — including the ones that didn't go our way.
Search Flintshire's planning register →
Figures taken from Flintshire County Council's public planning register, August 2026.
All of it — Connah's Quay, Shotton, Queensferry, Hawarden, Ewloe, Buckley, Mold, Flint, Holywell, Northop and the villages between. Mike is based in Hawarden, so most of the county is minutes away rather than miles.
Not always. Many single storey rear extensions qualify under Welsh Permitted Development rules — no application to Flintshire County Council at all, which saves the £585 fee. Mike confirms which side your project falls on at the £60 Initial Site Appraisal Meeting, before any fees are committed.
The Wales-wide householder fee: £585 to Flintshire County Council plus £149 to the Planning Portal, only when permission is actually needed — and Mike's 25-year approval record is publicly visible on Flintshire's own planning portal.
Two taps on the estimator gives you a realistic figure. When you're ready, the £60 Initial Site Appraisal Meeting comes off your fee if you go ahead.
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