How to Share Drawings with Subcontractors (and Clients)
Discover the professional workflow for sharing construction drawings, managing revisions, and using WhatsApp to keep site teams updated without losing control.
By James Shorter ·
How to Share Drawings with Subcontractors (and Clients)
Put every drawing in one shared place, give each subbie access to their own trade’s folders only, and make sure the revision and status are on the file name. Stop emailing PDFs and dropping them in group chats. That is how someone ends up fixing, cutting or pricing from a drawing that was superseded last week.
This guide covers how to set that up on a UK residential or small commercial job, how to handle a subcontractor who is not in your system yet, and how to share drawings and site videos with clients without losing control of them.
TL;DR
- Keep one controlled copy of each drawing in a single project library, not in email, WhatsApp threads or site folders.
- Give each subcontractor access to their trade’s folders only, and keep a record of who opened what.
- Put project, area, revision and status in the file name. Never use “final” as a status.
- Mark superseded drawings clearly and move them out of the live folder the same day.
- Subcontractors and clients can receive drawings in WhatsApp for free with BRCKS, so nobody has to install anything.
Table of Contents
- Why emailed drawings go wrong
- Set up one place for drawings
- Name files so the latest one is obvious
- Control who sees what
- When a subcontractor is not in your system yet
- Keeping superseded drawings off site
- Sharing drawings with clients
- Sharing site videos with clients
- A simple weekly routine
- Where a single drawing portal fits
- Our view on drawings in the chat
- Try it on your next job
- FAQ
- Sources
Why emailed drawings go wrong
A drawing set changes. The architect issues revision C, the engineer updates a beam, you pass it on. Three subbies now hold three different versions in three different inboxes. The problem is rarely the drawing. It is that nobody can say which copy is current.
The advice from UK practitioners is consistent. One UK security and document-handling firm recommends keeping drawings in one shared project area with controlled access for each firm, rather than emailing copies. A UK communications provider makes the same point for drawings and RAMS: one controlled copy of each in a single project library, with revision and status shown, so no one builds from a draft.
The cost is real rework. If you want the wider picture, our piece on construction document management looks at what poor document handling costs UK projects.
Set up one place for drawings
In formal projects this is called a Common Data Environment. The B1M describes it as a shared online space where all appropriate parties can reach the documents they need, with permissions controlled by an administrator. It also notes that working to one clearly filed, version-controlled set helps avoid delays and errors from searching for information or building from the wrong version.
You do not need a full BIM setup on a kitchen extension or a loft conversion. You need the same principle at a size that fits:
- One library per job. Not one per trade, and not one per person.
- Folders that mirror how the work is packaged: architectural, structural, M&E, joinery, groundworks.
- A “current” folder and a “superseded” folder, so old drawings are removed from use rather than deleted.
- One person responsible for issuing. Usually the site manager or contracts manager.
That last point matters more than the software. Even on a very large scheme, Crossrail’s published learning legacy describes a system where only a designated team could move drawings to a contractual revision, and only on a written request with the right assurance paperwork. Your version is smaller, but the discipline is the same: a drawing becomes current because one named person said so.
Our guide to drawing version control for UK builders goes further into the revision side, and document control in construction covers the wider process.
Name files so the latest one is obvious
A file called “Kitchen plan FINAL v2 (new).pdf” tells nobody anything. A site workflow guide from a UK survey technology firm suggests a naming convention that includes project, discipline, area, revision and status, and warns against vague statuses such as “final”.
A simple pattern for a residential job:
Project-Discipline-Area-Revision-Status
For example: Elm Road-ARCH-Ground floor plan-P03-S4
The status part follows the UK ISO 19650 suitability codes. The Indigo guide lists S2 as shared for information, S3 as review and comment, S4 as stage approval, and A codes as approved for use at that stage. If your architect already uses these, copy them. If not, keep it simple. Three states are enough on a small job: for information, for construction, superseded.
A subbie pricing a job should see “for information” on the file. A subbie about to cut steel should only ever see “for construction”. The name does that work before anyone opens the PDF.
Control who sees what
Sharing with subcontractors is not the same as sharing everything. The sparky does not need the groundworker’s quote. The plasterer does not need your margin.
Two rules cover most of it:
- Trade-level access. The same UK source recommends that each subcontractor sees only the folders for their trade, not the whole project and not other projects.
- Keep commercial documents separate. Drawings, specs and RAMS can go to the trade. Variations, pricing and correspondence stay in a separate area.
You also want a record. Keep a log of who opened which file, so that if there is a dispute you can check which revision someone had access to at the time. That one habit settles most “nobody told me” arguments.
What to include in each trade’s pack
- The current drawings for their scope, with revision and status in the name
- The relevant spec section
- Their RAMS, and any site rules for the job
- Access details: gate codes, Wi-Fi, key safe location
- The latest programme dates for their trade
If your system holds gate and key-safe details per job, put them alongside the drawings. It saves a phone call every time a new subbie turns up.
When a subcontractor is not in your system yet
This happens on every job. A tiler is booked at short notice, a specialist arrives for one day, or a subbie has no appetite for a new login. Do not fall back on emailing the whole set.
A practical routine:
- Identify the exact sheets that trade needs. Not the full pack.
- Send those sheets by whichever channel the subbie actually uses, with the revision and status in the file name and in the message.
- Ask for a reply confirming receipt of the named revision. A thumbs-up on a message that says “P03, for construction” is a record.
- Log it in the job, so there is a trace of who received what and when.
- When a revision changes, re-send
- to the same person and ask for a new acknowledgement. Do not assume they will see it.
This is where a chat-based approach earns its place. Most subbies already use WhatsApp. If the drawing goes through a channel that files it to the job automatically, you get the convenience of the chat and the record of a document system. With BRCKS, subcontractors and clients receive updates in WhatsApp for free and install nothing, while the same record builds underneath for your team.
Keeping superseded drawings off site
The most useful control is the dull one: a register. Shaftesbury Town Council’s construction quality procedure is a public example. It requires all drawings to be recorded in a drawing register, superseded drawings to be marked “SS” and moved to a superseded folder, the latest revisions saved in a current folder, and the project manager to check drawings against the register before they are used on site.
You can copy that on any job:
- Log every drawing with number, title, revision, date and who issued it.
- When a new revision arrives, mark the old one superseded the same day.
- Before anyone starts a task from a drawing, check the revision against the register.
- Tell the trades affected, by name, in the job chat.
Printed copies are the weak point. If drawings are pinned up in the site cabin, take down old ones when a new revision is issued, and write the date on the new one.
Sharing drawings with clients
Clients need a different pack from subbies. They want to understand the design, approve choices and see progress. They do not need coordination drawings or RAMS.
- Share what they need to decide on. Floor plans, elevations, kitchen and bathroom layouts, electrical positions where they are choosing sockets and lighting.
- Label status clearly. A client who sees a drawing marked “for information” understands it may change. One marked “for construction” is a commitment, and a change after that point is a variation.
- Keep approvals on record. If a client signs off a layout, the approval should sit next to the drawing revision they approved. That protects you when they remember it differently later.
- Use a client portal or a simple chat route. Many homeowners do not want another login. A WhatsApp route with the record filed to the job suits them better.
When a client asks for something that changes the drawn scope, log it as a variation and tie it to the new revision. Our on-site collaboration workflow guide shows how that fits into a day-to-day routine.
Sharing site videos with clients
Clients often ask to see progress, and a short video does it better than a paragraph. A few habits keep it tidy and private.
- Film the work, not the people. Keep faces, neighbouring properties, number plates and anything sensitive out of shot.
- Share a link or message to the individual client, not a public one. Do not post to open channels or group threads with mixed audiences.
- File every video to the job. A video sent from a personal phone is lost in a month. One filed to the job with a date and a label (“first fix electrics, kitchen wall, 4 November”) can be found when it is needed.
- Keep it short. Thirty to sixty seconds with a clear caption beats a long walk-round nobody watches.
- Use video as evidence too. A clip of a concealed pipe run before boarding is worth more than a note later.
For homes where the client is not on site, 360° tours let them look round at their own pace. BRCKS 360° Site Tours is an add-on to the main plan, and the tours sit with the job record.
A simple weekly routine
Systems fail when they rely on goodwill. Build the routine into the week:
| When | Task | Who |
|---|---|---|
| Whenever a revision arrives | Update the register, mark the old one superseded, notify affected trades | Site or contracts manager |
| Before each trade starts | Confirm they hold the current revision for their scope | Site manager |
| Weekly | Check who has opened new drawings, chase anyone who has not | Site manager |
| At handover | Collect as-built drawings and file them to the job | Contracts manager |
On as-builts: the same Shaftesbury procedure refers to as-built drawings being saved in a dedicated folder. Put yours in a clear place at the end of the job so the client, and whoever works on the building next, can find them.
Where a single drawing portal fits
Large housebuilders already work this way. Barratt Redrow describes a drawing portal as a single place to upload, store and download drawings and documents for developments, with help guides and videos kept in the same portal. The idea scales down. A small builder does not need a corporate portal, but does need the same “single place” behaviour.
Our smarter file sharing guide covers how this looks on a small team.
Our view on drawings in the chat
Most drawing mistakes we see are not design errors. They are delivery errors: the right drawing existed, but the person on site had a different one.
We built BRCKS because site teams already live in chat. Asking a subbie to learn a new system for a two-day job rarely works. So the drawing goes where they already are, and the record builds underneath.
Every drawing and quote is versioned and filed to the job. The trade sees what they need, you see who has what, and nothing depends on remembering to reply-all. Subcontractors and clients stay in WhatsApp, free, with nothing to install.
Our aim is simple: get the job out of the group chat and into one list per job, so the current drawing is always one tap away.
James
Try it on your next job
BRCKS is built for UK builders and trades. Your core team uses the BRCKS Chat app on iPhone or Android, the office uses BRCKS Web, and subcontractors and clients use BRCKS on WhatsApp for free. Drawings, RAMS and quotes are versioned and filed to the job, and messages turn into snags, orders, site visits or checklist items with one tap.
Teams costs £40 per seat per month billed annually, or £50 monthly. Solo is £20 a month. There is a 14-day free trial, and subcontractors and clients are free. See BRCKS pricing, or book a demo and we will walk you through a live job. If you run a small firm, construction software for small builders is a good place to start.
FAQ
What is the safest way to share drawings with subcontractors?
Keep them in one shared project library and give each firm access to its own trade’s folders. Avoid emailing copies, because you lose control of which version is in use. Keep a record of who opened which file so you can check later.
How do I make sure subbies use the latest revision?
Put the revision and status in the file name, move superseded drawings out of the live folder the same day, and tell the affected trades by name. Before a trade starts work, check the revision they hold against your drawing register.
What if a subcontractor will not use a new app?
Send only the sheets they need, through a channel they already use, and ask them to confirm the revision in writing. Log it against the job. With BRCKS on WhatsApp, subcontractors receive updates without installing anything.
Should clients get the same drawings as subcontractors?
No. Give clients the plans, elevations and layouts they need to approve, with status clearly labelled. Keep coordination drawings, RAMS and commercial documents with the trades and your own team.
How should I share site videos with clients?
Film the work rather than people, send it directly to the client instead of a group, and file each clip to the job with a date and a label. That keeps it private, findable and usable as a record.
Sources
- Sharing Drawings Safely Between Architect and Builder
- Stop Drawings and RAMS Going Out of Date on Site
- Digital Construction Workflows Guide for Site Teams
- Top 5 tips for digital collaboration in construction
- Management and Client Assurance of Contractual Drawing Deliverables
- Shaftesbury Construction Quality Control Procedure
- Drawing Portal | Barratt Redrow Commercial Support
Recommended
- Drawing Version Control for UK Builders
- Smarter File Sharing for Construction Efficiency
- On-site Collaboration Workflow Guide for UK Construction
- UK Client Sign-off Checklist & Legal Duties
How BRCKS Can Help
Effective drawing management is the backbone of any successful build, ensuring that every stakeholder remains aligned from pre-construction through to completion. By centralising your documents within BRCKS, you eliminate the risks associated with outdated versions and fragmented communication across different platforms. Our intuitive interface simplifies how you distribute updates to subcontractors and clients alike, keeping your project on track and your team informed. We invite you to explore how BRCKS can streamline your site operations and improve collaboration across your entire portfolio. Learn more at BRCKS and explore our full feature set.