Terms of engagement.

Who you're hiring.

The Plan Company is a trading name of The Plan Company London Ltd, a company registered in England & Wales (company number 17105830), registered office 60 Midland Road, Wellingborough, NN8 1LU. Contact us at hello@theplancompany.co.uk. These terms cover the standard fixed-price packages listed on this site. When you book a package we'll send a short statement of work (SOW) with your specific dates and deliverables, if anything in the SOW contradicts these terms, the SOW wins.

What you're buying.

Each package covers a defined slice of work: architectural drawings, structural calculations, and submission to Building Control on your behalf. The current packages are:

• Loft, £1,650 inc VAT.
• Extension, £1,650 inc VAT.
• Combo (loft + extension) - £3,150 inc VAT.

The package detail pages list exactly what's in each pack. The price you see is the price you pay, fixed, no quotes-after-a-call, no surprise extras.

What's not included.

We're upfront about this because it's where most disputes in this industry come from. The package price does not cover:

• Planning permission applications, including the local authority planning fee.
• Party Wall surveyor fees or notices.
• The Building Control submission fee charged by the local authority or approved inspector.
• On-site work, supervision, site visits beyond the initial survey, or contract administration.
• Specialist reports (acoustic, drainage, SAP, EPC) unless we've agreed otherwise in writing.
• Builder selection, project management or anything done by a contractor.

Where you need any of these, we'll flag it before you book. We can usually point you at someone good.

Out-of-scope work.

If you ask for something that sits outside the package, we charge £55 per hour ex VAT. We will not start out-of-scope work until you've agreed the estimated hours and cost in writing (email is fine). You won't get a surprise invoice for something you didn't ask for.

Revisions.

Each package includes two rounds of revisions to the drawings. A round is one consolidated set of changes, please collect feedback and send it as a single package rather than drip-feeding. Further rounds are charged at the £55/hr out-of-scope rate.

Timelines.

Standard turnaround from receipt of survey data and final brief:

• Loft or Extension, 14 working days.
• Combo, 21 working days.
• Expedited, 7 working days for the single-package work for an extra £250 inc VAT, subject to capacity.

The clock starts when we have everything we need from you. If we're waiting on site access, feedback or paperwork the timeline pauses. We'll tell you on the day we're blocked.

What we need from you.

The packages are fixed price because the inputs are predictable. To keep them that way, you agree to:

• Give us safe and reasonable access to the site for the initial survey.
• Provide an accurate brief, including any planning conditions or covenants you're aware of.
• Respond to questions and review drawings within 5 working days.
• Tell us promptly if anything changes, scope, ownership, timescale.
• Pay invoices on the terms below.

Payment.

Unless your SOW says otherwise, we take a 50% deposit on booking and the balance on issue of the final pack. Invoices are payable within 7 days, by card via Stripe or by bank transfer. VAT is charged at the standard rate on top of all prices on this site. We don't release the final pack or submit to Building Control while there's an unpaid invoice.

Intellectual property.

You own the final drawings and calculations the moment your invoice is paid in full. Until then, the work remains ours and you can't use it for construction or share it with a builder. We keep the right to use anonymised versions of the work, sketches, photos of completed projects, for portfolio and marketing, unless you tell us not to.

Cancellation.

You can cancel at any time. We'll bill you for work done up to the point of cancellation, at the package's pro-rated rate or, where the work doesn't divide neatly, at £55/hr inc VAT. Consumer cooling-off rights under the Consumer Contracts (Information, Cancellation and Additional Charges) Regulations 2013 apply where relevant, note that if you ask us to start work inside the 14-day cooling-off period, you owe us for the work done if you then cancel.

Liability.

We'll do the work with the reasonable care and skill expected of a competent structural and architectural practice. We carry professional indemnity insurance and will share the certificate on request. To the maximum extent the law allows, our total liability to you for any claim arising out of an engagement is capped at the fees you've paid us for that engagement. We don't exclude or limit liability for death or personal injury caused by negligence, for fraud, or for anything else the law says can't be limited.

Complaints.

If something has gone wrong, tell us first. Email hello@theplancompany.co.uk with the project reference and what's gone wrong. We'll acknowledge within 3 working days and aim to resolve within 21. If we can't agree, the dispute goes to the courts of England & Wales, but we'd rather not.

Privacy.

How we handle your data is covered in the privacy notice. Cookies are covered in the cookies notice.

Governing law.

These terms and any contract between us are governed by the laws of England & Wales. The courts of England & Wales have exclusive jurisdiction. This version of the terms was published on 19 May 2026.