UK edition
Your AI agent for drawings, tenders and documents.
ArchX by FrontierX is the AI agent for architecture practices in the UK. You give it the task and the project files. It reads, measures, calculates, operates programs and writes the finished files – on your Mac or Windows PC.
Works with the files your practice already uses
An AI agent opens your documents, uses the right tools and writes the files. You don’t explain every step.
Tendering
ArchX reads every returned tender, recalculates the totals, prices the exclusions and qualifications and writes the tender analysis, the tender report and the clarification questions.
England test projectThree returned tenders checked, adjusted and ranked: a tender analysis in Excel and a seven-page tender report with a recommendation.
Explore the workflow →Drawings
ArchX turns survey notes, scans, PDFs and IFC into editable DXF drawings, design options, area schedules and drawing registers.
England test projectMeasured survey notes in: the existing plan and two proposed options as DXF and PDF, with dimensions, room names and a title block.
Explore the workflow →3D models
ArchX builds 3D models of your design options from plans, sketches or a survey, with views for the client and a model you can turn in the browser.
England test projectTwo extension options for a bungalow in Kent as 3D massing models, four presentation views and a browser viewer for the client.
Explore the workflow →Planning
ArchX checks your drawings against the council’s validation requirements, works out the fee, flags what is missing or contradictory and drafts the supporting documents.
England test projectSeven application drawings checked: a householder validation check with the fee, a permitted development assessment, floor areas and a draft heritage statement.
Explore the workflow →Building Regulations
ArchX sets out the building control route, the dutyholders and every Approved Document that applies, and turns it into a design checklist for your team and the engineer.
Documents and letters
ArchX writes client letters, reports, checklists and fee proposals in British English on A4, from your brief, your drawings and your notes.
Meetings and site visits
ArchX turns meeting recordings and site notes into minutes, site visit reports and action lists with owners and dates, in British English on A4.
Contract administration
ArchX drafts architect’s instructions, site visit reports, snagging lists and handover records under JCT Minor Works 2024, from the signed contract and your project record, ready for your signature.
Project review
ArchX reads the whole drawing set and project file, builds the register and flags what contradicts or is missing before anything leaves the practice.
Visualisation
ArchX turns a white model into AI visualisations: materials, seasons and light as variants for the client, in minutes.
ArchX works in your project folder. It reads what is there, does the work and saves editable files you can open, change and send.
The task
“Three tenders came back for 14 Larch Walk … Please check them – arithmetic, qualifications, anything missing, provisional sums – compare like with like and write the tender report for our clients with a recommendation.”
ArchX’s answer, 7 minutes later
“Hartfield is the provisional recommendation, subject to confirming its unchanged tender after the £1,000 rooflight error and its full substructure scope.”
ArchX UK edition · England test project, rear extension at 14 Larch Walk · 11 Oct 2026
from three returned tenders to the tender analysis in Excel and a seven-page tender report, including a £1,000 arithmetic error it found in one tender.
in the Building Regulations design checklist for a rear extension, each with its Approved Document, the edition and the value the design has to meet.
from measured survey notes to the existing ground floor plan: editable DXF in millimetres and the PDF sheet at 1:50 on A3.
Specialist knowledge for England is built in. Every rule names its source and the date it was checked: legislation.gov.uk, GOV.UK, the Planning Portal, HSE and ARB.
Every limit measured from your drawings, validation against the council’s local list, heritage and design and access statements.
Full plans, building notice or a registered approver, the Part 2A dutyholders and a checklist from the current editions.
Which sections of the Party Wall etc. Act 1996 apply, and the notices with their periods and recipients.
Domestic and commercial clients, principal designer and contractor, pre-construction information and notification to HSE.
Schedule of works, invitation to tender, tender analysis and the tender report with a recommendation.
Instructions, interim certificates, pay less notices, practical completion and the final certificate.
The ARB Architects Code, terms of engagement and fee proposals by RIBA Plan of Work stage.
Planning fees, the Planning Portal charge, building control charges, CIL and VAT on building work.
Measured from drawings or IFC models, with CIL floor space and the nationally described space standard.
Dimensioned, editable DXF in millimetres with scale bar and north point, plus drawing register and issue sheet.
A 3D model of each design option from your drawings, to orbit in the browser.
Letters, reports, minutes and certificates on your letterhead, as Word, Excel, PowerPoint and PDF.
ArchX works on your computer the way your team does: it opens programs, uses the browser, looks things up and writes the files.
For Mac or Windows. The 7-day trial starts by itself: no form, no payment details.
Your ChatGPT account, Plus or higher, or your own API key from OpenAI, Anthropic, Google, Mistral or xAI.
Choose the project folder and say in your own words what you need. Check the result and tell ArchX what to change. It keeps working until it fits.
Download ArchX and try it free for 7 days. No form, no payment details.
Mac with Apple silicon, macOS 13 or later. For a Mac with an Intel processor: download the Intel version.
Download for MacWindows (64-bit). Install it on your PC and sign in with your AI provider.
Download for WindowsEach person needs a ChatGPT account, Plus or higher, or an API key from OpenAI, Anthropic, Google, Mistral or xAI. What you need to start
£169a month
For your practice, including the first person. Each additional person £42 a month. Prices exclude VAT.
See pricingThe licence terms and the service privacy notice of the ArchX service apply to ArchX.
ArchX is the AI agent for architecture practices in the UK: a desktop app for Mac and Windows that opens the drawings and documents in your project folder and does the work. It compares tenders, checks planning applications, sets out the Building Regulations route, draws editable plans, builds 3D models and drafts letters, reports and certificates under JCT Minor Works 2024, in British English on A4.
Each person connects their own ChatGPT account, Plus or higher, or an API key from OpenAI, Anthropic, Google, Mistral or xAI. You can switch provider at any time; projects, conversations and results stay. For practices of two or more people, ChatGPT Business fits well: central billing, and your content is not used for training by default.
Your files stay in your project folder; ArchX keeps no project server of its own. What a task needs goes from your computer straight to the AI provider you connected, with no service in between. An API key stays in the key store of your computer: the Keychain on a Mac, Credential Manager on Windows. Your data
£169 a month for your practice, including the first person. Each additional person £42 a month. Prices exclude VAT. Yearly: £1,690 for the practice and £420 per additional person. Every person starts with 7 days free, without payment details. AI usage runs through each person’s own ChatGPT account or API key. Pricing
Yes, without a plugin. ArchX reads PDF drawings, DXF files and IFC models and writes editable DXF in millimetres that AutoCAD, Vectorworks, Revit and Archicad open. From DWG, save the drawing as DXF or PDF. Letters, schedules and reports come as Word, Excel, PowerPoint and PDF. Files and software
No. Drawings, tenders, documents, 3D models and minutes work for any project. The planning and Building Regulations knowledge follows the rules for England, and Wales with a clear notice; for Scotland and Northern Ireland, ArchX works from the sources you supply.
For Mac and Windows. With your ChatGPT account or API key.
CH
