Pricing

Know The Fee Before You Commit.

Four ways to test a building, from a £15.99 automated check to an design-led feasibility. Answer a few questions and the price is on screen, not in an email.

HMO Checker Property Report

£15.99

Automated HMO screening.

Planning and Article 4 checks, local HMO information, property and location data, key planning considerations and initial development indicators.

Check an HMO

Opens hmochecker.co.uk in a new tab. A separate tool from a sister brand, not a Thistle feasibility.

Automated Site Feasibility

£49.99

Detailed data-led appraisal.

For existing buildings nationwide: commercial to residential, apartments, HMOs, co-living, mixed use and similar opportunities.

Around 30 minutes

Recommended

Architectural Feasibility

From £298

Data, architectural judgement and design.

Design review, sketch scheme, proposed layout, unit and bedroom testing, a one-hour design consultation, a project review and recommended next steps.

5 working days

Bespoke

Expert Session

Complex and larger projects.

Anything over 600m², development land, new build, masterplanning or a scheme with several strategies to test. We scope it properly first, then quote a fixed fee.

All fees include VAT.

Architectural Feasibility

Get Your Fixed Fee.

Eight questions, about a minute. Straightforward projects get a price on screen. Anything larger or more involved routes to a free Expert Session, because a scope we have not seen is not one we will put a number on.

Roughly how big is the existing building?

Gross internal area across all floors, in m².

What is it now?

What do you want it to become?

How many separate buildings?

How many design options would you like tested?

Heritage status

Do you have enough on the existing building?

Plans, surveys, brochures, photos or planning history that show what is there now.

Anything else that applies?

Leave these unticked if none apply. Each one changes the fee, and a masterplan or whole-site redevelopment is always scoped in a conversation rather than priced automatically.

Where do we send your fixed fee?

Your fee appears on screen instantly; these let us hold it for you and pick the conversation up if you want to talk it through.

We use these details to send you the fee and to follow up about your project. We do not sell your details or add you to a marketing list without asking. Privacy notice.

No payment yet. All fees include VAT. Larger or more involved projects route to a free Expert Session rather than an automatic price.

The Best Money I Spent Before Buying a Property

I booked a feasibility study before committing to the purchase of a property I intended to convert into an HMO. The team were thorough, professional and, most importantly, completely honest. Although the outcome wasn't what I initially hoped for due to planning constraints, the study identified significant risks that could have cost me a substantial amount of money had I proceeded without proper due diligence.
Maywood Group, verified review on Trustpilot

What Affects Your Fee.

Every fee is fixed before you pay. These are the things that move it, and the calculator asks about each one, so the number you see is the number you pay.

Property size
Existing and proposed use
Units or bedrooms
Extent of alterations
Planning complexity
Heritage and listed status
Alternative options tested

Where a project has several of these at once, we stop pricing automatically and talk to you first, through a free Expert Session.

£49.99 Or From £298?

Both start from the same data. The difference is what happens to it.

Automated Site Feasibility

£49.99

Data-led and fully automated. Planning, standards, indicative capacity, commercial context, risks and next steps, in around 30 minutes. No drawings, no design review.

Architectural Feasibility

From £298

Everything in the automated appraisal, plus our design team: planning interpretation, sketch and layout testing, and a professional recommendation you can act on.

Automated Site Feasibility, £49.99

What You Get For £49.99.

Property and site overview, location and surrounding context
Existing use, potential development routes and relevant planning policy
Planning history, nearby precedents, constraints and planning-risk assessment
Local space and amenity standards, and indicative development capacity
Indicative bedroom or unit potential
Local rental and sales comparables, indicative income and GDV
High-level viability indicators
Building Regulations and technical constraint flags
Heritage, highways and parking considerations
Recommended development strategy, roadmap and next steps

The £49.99 appraisal is fully automated and data-led. It does not include architectural drawings or an design review.

Client Reviews

Priced Up Front.

Every review on our Trustpilot profile is five star. Read them all

I booked a feasibility study before committing to the purchase of a property I intended to convert into an HMO. The team were thorough, professional and, most importantly, completely honest. Although the outcome wasn't what I initially hoped for due to planning constraints, the study identified significant risks that could have cost me a substantial amount of money had I proceeded without proper due diligence.
Maywood Group30 June 2026 · via Trustpilot
Professional, Commercial and Solutions-Focused
We have been working with Ed and the team at Thistle Architecture on a complex office-to-residential conversion and roof extension project in Winchester, and the service throughout has been excellent. Ed has been proactive, commercially minded and solutions-focused from day one.
Liam Thomas12 May 2026 · via Trustpilot
A Great Team
I've worked with Edward and Kaan on several planning applications now, all of which have resulted in positive outcomes. They consistently provide a high standard of work, are thorough in their approach, and understand how to present a strong planning case.
Sunny Berhane7 August 2026 · via Trustpilot
I decided to work with Ed and the team due to their experience in HMO conversions. I was purchasing my first building to convert and needed expert guidance. The whole process was so enjoyable and the results were fantastic!
Gemma18 May 2026 · via Trustpilot
Thistlearchitecture recently did the full planning application on a Hotel we own to which they gain planning permission to turn it into a 9 bedroom HMO. Great service throughout, always easy to get on the phone and very details with their work.
Joel Walker1 April 2026 · via Trustpilot
Ed and his team are always friendly
Ed and his team are always friendly, professional and positive. They are exactly the team you want when working on complex projects.
Adam Cooper20 August 2026 · via Trustpilot
Highly recommend!
Used Ed and his team to put my property through planning etc.. couldn’t fault them, came up with some great ideas and drawings.. would highly recommend!
Lewis O'Hara20 August 2026 · via Trustpilot