Pricing
Know The Fee Before You Commit.
Four ways to test a building, from a £15.99 automated check to an architect-led feasibility. Answer a few questions and the price is on screen, not in an email.
HMO Property Check
£15.99
Automated HMO screening.
Planning and Article 4 checks, local HMO information, property and location data, key planning considerations and initial development indicators.
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
Architectural Feasibility
From £298
Data, architectural judgement and design.
Architect review, sketch scheme, proposed layout, unit and bedroom testing, a one-hour architect meeting, 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.
Architectural Feasibility
Get Your Fixed Fee.
Seven 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.
No payment yet. Larger or more involved projects route to a free Expert Session rather than an automatic price.
How The Fee Is Built.
Published in full, so the number the calculator gives you is one you can check yourself.
By floor area
| Up to 150m² | £298 |
|---|---|
| 151 to 250m² | £348 |
| 251 to 350m² | £398 |
| 351 to 450m² | £448 |
| 451 to 550m² | £498 |
| 551 to 600m² | £548 |
| Over 600m² | Expert Session |
Complexity
| Straightforward single-use conversion | No uplift |
|---|---|
| Mixed-use development | +£100 |
| Conservation Area | +£50 |
| Grade II listed building | +£150 |
| Two separate buildings | +£75 |
| Significant extension element | +£75 |
| One additional design option | +£75 |
| Significant special planning constraint | +£50 |
A Grade II listing replaces the Conservation Area uplift rather than adding to it. Where three or more of these apply, we stop pricing automatically and talk to you first.
Automated Site Feasibility, £49.99
What You Get For £49.99.
The £49.99 appraisal is fully automated and data-led. It does not include architectural drawings or an architect review.
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.
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.
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.
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!
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.