When you look for a revision drawings service, it usually comes down to one core question: will the new drawing fully match the situation as it actually is now, rather than the original design? With us the answer is yes, and that starts with the way we work.
A drafter draws, a second team member checks that work, Sam, our team leader, then reviews it and Barry, our project manager, does a final check before we send a drawing. We maintain this structure of at least three review layers because a revision without error checking introduces a new mistake instead of fixing an old one.
We do not work in isolation from you: you first supply the details and usually the existing drawings, after which we deliver in stages and process your feedback. The result is a revision set that is not only technically correct, but also fits what you want to do with it, from archiving to a follow-up project.
Cable tray routing in the model, built with parametric families that carry the material schedule with them.
A case study: revision drawings for Firefly
Having revision drawings made is exactly the kind of work in which we have already built up practical experience. At Firefly it concerned as-built material whose existing drawings had been printed incorrectly and partly drawn by hand, making the whole thing hard to read and messy. Instead of calling the client about every uncertainty, we worked it out ourselves at the time and still delivered it neatly. That approach says something about how we handle revision work in practice: first we establish what is actually there, and only then do we revise the drawing itself.
That prevents a revision from simply copying the old errors, just in a tidier form. What we take away from projects like this is above all the importance of independent investigation before we draw. If you send us a revision round on existing DWGs, you do not have to verify every detail yourself before we can start. We flag uncertainties, ask targeted questions where necessary and work out the rest independently. When a deadline could not move, we also worked through evenings and weekends, with days of fourteen to fifteen hours, to complete a revision round on time after all.
We carry that experience into every new revision project: first get the full picture, only then draw, and when the schedule is under pressure add capacity instead of sacrificing quality in the end result. That applies just as much to a single drawing as to a complete file, because our approach does not change with the size of the assignment.
What our revision drawings service delivers
Within our revision drawings service we deliver both 2D drafting and, where needed, 3D modelling. In concrete terms, we revise existing floor plans, sections, details and installation schematics, adjusted to the current situation or to changed requirements on your side. On projects where piping systems play a role, such as in greenhouse construction, we also often revise components that keep recurring in the drawing, such as valves in different sizes. Where possible, we build these kinds of components as a parametric Revit family, so a next revision does not have to be done by hand again.
We deliver the result in the file format you use, usually DXF, DWG or a Revit format, and where needed in STEP for components heading into production. Alongside the revised drawing itself, we also update the material schedule when it is part of the model, so both stay aligned. We draft and model; we do not do engineering, so the design and the choices within it remain with you. We do not deliver a complete package in one go, but build up the revision in stages, so you can review it along the way.
That leaves us room to adjust course before the whole file has been revised. If you are weighing up revising in-house against outsourcing, this is exactly the kind of output that lets you judge whether our approach fits your own situation and schedule. Even with a single drawing that urgently needs revising, we apply the same care as with an extensive package, without the lead time increasing unnecessarily.
No ongoing payroll costs and no idle staff once the peak is over. If one of our people is off sick or on holiday, we replace them and the work simply carries on.
From revision to a usable file
For us, a revision set is only finished when it is not only technically correct but also immediately usable in your downstream process. That means we deliver the revised drawings in the structure and layout you already use, so they fit into your own archive or project file without extra editing. Where applicable, we also add a revision number or date, so it is always clear which version is current. On larger projects, such as in greenhouse construction, we work in software you can log in to yourself to follow progress, which simplifies the handover to the next stage. For more loosely structured revision work we exchange files by email, with clear partial deliveries so nothing falls through the cracks. The intellectual property of what we deliver lies with you, so you can continue with it without restrictions, whether for archiving, tendering or a next construction phase.
Where the revision touches on components that recur often, such as a pipe route with the same kind of components throughout, we look at whether a parametric set-up will save time in future. That is not needed on every project, but we do take it into account as soon as the file gives reason to. That way our work connects with what still needs to happen after the revision, rather than standing on its own as an isolated result. We also deliver a revision that affects only a small part of a larger file in this way, so the whole stays consistent.
Revision drawings made to your CAD standards
When we make revision drawings, we consider aligning with the existing standard just as important as the content of the drawing being correct. We request your drawing conventions and layer structure before the work begins, and then keep to them throughout the project. That prevents a technically correct revision from still not fitting into the existing archive because layers are named differently or because we use a different layout from the one you normally use.
With a set that has been edited by different parties over the years, that standard may since have drifted from what was once agreed.
In that case, we first discuss with you which line to follow for the revision currently on the table. If an existing family set or template has become very messy, rebuilding is sometimes faster than repairing, and we make that call together. We work in our own environment with our own licences, but always deliver in the format you expect. Day-to-day contact about details like these runs by email, phone and meetings, at a rhythm that varies per client from every two days to weekly.
That way you stay informed throughout the project about choices that affect alignment with your own standard, rather than only finding out at delivery. Even when we serve several clients at the same time, we keep to each project's own standard instead of applying one fixed approach to every file.
Frequently asked questions about our revision drawings service
Let us update your revision drawings
Send us your documents and drawing conventions and we will let you know within one to two working days what we can take on and when.