Services

Redline Markups

Our skilled design technicians can apply Redline Markup to any specific drawing type.

At OutsourceCAD, we offer fast and accurate redline markup services to help architects, engineers, and contractors implement revisions to their CAD drawings with confidence. Whether you need to incorporate hand-marked changes, site updates, or consultant feedback, our team translates redline comments into clean, updated CAD files that match your drawing standards. This ensures your documentation stays current, coordinated, and ready for the next project phase.

Our redline services cover architectural, structural, MEP, and civil drawings. Simply send us your scanned markups, PDFs, or annotated files, and we’ll handle the rest—updating dimensions, revising layouts, adjusting notes, and ensuring version control. We work in AutoCAD, Revit, and other industry-standard platforms, delivering fully editable DWG files that align with your project’s layering, formatting, and title block conventions.

Clients across the UK, Ireland, and internationally rely on OutsourceCAD for quick turnaround and reliable redline support. Whether you're working on a tight deadline, managing multiple revisions, or handling contractor updates, our team ensures your drawings reflect the latest project information accurately. Let us help you keep your documentation sharp, compliant, and construction-ready—every time.

If you require redline drawings, contact Outsource CAD’s expert technicians today. We have a depth of experience in providing redline markups for projects such as:

  • 1500 Red Line Markups for an Oil and Gas project using the Microstation programme.
  • Volume contracts within the Construction and Architectural industries for New Build projects.
  • Redline markups for Tilbury Power Plant piping layouts.

We ensure our CAD design service meets our clients specific requirements for a given project, tailoring our CAD standards to match theirs. Our experienced team of in-house 2D CAD technicians work to an exceptionally high standard of quality and always meet delivery timeframes.

Why Choose US

Why Choose OutsourceCAD?

Our friendly experts deliver cost‐effective, bespoke solutions that streamline your process and support your business growth. Let us handle your CAD needs so you can focus on success.

UK Based Team

We have in-house expertise in a variety of professions which allows us to provide complete CAD service solutions to a wide range of sectors.

Client Centric Focus

We view our clients as partners not simply outsourcing. We work with some of the most well known companies in UK, America and beyond.

Quality First

We operate a quality first approach, meaning we have checklists and QA checkers to ensure we submit the best quality to our clients.

SLA Driven

We monitor all our work to ensure we meet your deadlines whilst still maintaining quality. All work is shown on online shared trackers.

OUR clients

Trusted by well known clients across industries

We have the privilege of working with some of the most well known clients in UK, America and beyond. We view our clients as partners and work collaboratively with them to achieve results.

Discuss your CAD requirements with us

Simply send us some information and any files/ examples and we can discuss.

Frequently Asked Questions

What is a redline markup?

A redline markup is a set of handwritten or annotated changes made to an existing drawing, typically shown in red ink, indicating modifications that need to be incorporated into the updated CAD file. They are an essential part of the construction documentation process.

What redline markup services does Outsource CAD provide?

We provide fast and accurate redline markup services for architectural, structural, MEP, civil, and oil and gas drawings. We work in AutoCAD, MicroStation, and Revit and have completed over 1,500 redline markups including a major oil and gas project and volume contracts for construction new builds.

What is the difference between a redline markup and an as-built drawing?

Redline markups are the annotated changes made during construction as the project progresses. As-built drawings are the final comprehensive record of the completed project incorporating all those changes. Outsource CAD provides both services.

How do I send my redline markups to Outsource CAD?

You can send redline markups as scanned images, PDFs, photographs of hand-marked drawings, or annotated digital files. We work with whatever format is most convenient for you.

How quickly can Outsource CAD turn around redline markup work?

Single drawing updates can often be turned around within 24 to 48 hours. Larger packages are scheduled based on scope. We will always confirm the timeline before commencing work.