2D drafting · M&E drawings · PDF to CAD · As-builts
CAD Drafting Services in London
Optimar Precon gives London architects, contractors, M&E subcontractors and fit-out firms extra drafting capacity when deadlines pile up. We turn surveys, PDFs, sketches and redlines into clean, layered DWG sets that follow your templates and UK drawing conventions.
Our UK team is based in Chertsey, Surrey, and our production team works ahead of the UK day, so marked-up drawings sent in the evening are usually back with you the next morning.
Request a Drafting Quote
Attach drawings, markups and your deadline. We reply with a sheet list, price and delivery date.
Drawings That Follow UK Standards and Approval Routes
Drawings produced for a London project are judged against UK conventions, not US ones. We work in metric, to ISO sheet sizes, and use the file naming, status and revision codes set out in your BS EN ISO 19650 information requirements.
Where drawings support a Building Regulations application, we draft to the details and notes your designer specifies against the Approved Documents. On higher-risk buildings under the Building Safety Act, we keep revision records tidy so your team can maintain the golden thread. Design responsibility and sign-off stay with your principal designer and engineers.
Drafting Services for London Project Teams
Each package is scoped separately, so you only pay for the sheets you need.
M&E drafting for London fit-outs and refurbishments
We prepare mechanical and electrical installation drawings for M&E contractors and consultants working on Cat A and Cat B office fit-outs, residential blocks and refurbishments.
M&E CAD drawing services →- Ventilation and ductwork layouts
- Heating and chilled water pipework
- Small power and lighting layouts
- Containment and cable routes
- Above-ground drainage and plumbing
- Builder’s work and penetration drawings
Architectural drafting
Plans, elevations, sections and details for planning, Building Regulations and construction packages.
Architectural CAD →PDF and survey to CAD
Scanned record drawings, PDFs and measured survey sketches rebuilt as scaled, layered DWG files.
CAD conversion →Structural drafting
General arrangements, foundation plans, steel and RC details from your engineer’s design and markups.
Structural CAD →Shop drawings
Joinery, façade, steelwork and M&E shop drawings with the dimensions fabricators need.
Shop drawings →2D and 3D CAD
2D production drawings and 3D CAD models for design review and coordination.
2D CAD drawings →As-built and O&M drawings
Record drawings updated from site redlines for handover and your O&M manual.
As-built drawings →Working outside London? See our CAD services across the UK. Need Revit models or clash detection? See BIM services in London.
What a Drafting Package Looks Like
Three common requests from London teams, showing what you send, what you get back and the usual timeframe. These are example scopes, not client case studies. Your quote is based on your own drawings.
M&E installation drawings for a Cat B fit-out
An M&E contractor has the consultant’s design drawings and needs coordinated installation layouts on the main contractor’s title block.
- You send
- Design PDFs, CAD template, spec
- You get
- Layered DWG layouts, details, PDF set
- Typical size
- 25–50 sheets
- Typical time
- 2–3 weeks
Existing drawings from scans and a measured survey
A practice converting a Victorian terrace into flats has scanned records and survey notes, and needs accurate existing plans before design starts.
- You send
- Scans, survey sketches, site photos
- You get
- Existing plans, elevations, sections in DWG
- Typical size
- 8–20 sheets
- Typical time
- 5–8 business days
Joinery shop drawings for a retail or hospitality fit-out
A joinery subcontractor needs shop drawings for counters, wall panelling and display units, issued for designer approval before manufacture.
- You send
- Design intent, finishes schedule
- You get
- Plans, elevations, sections, fixing details
- Typical size
- 15–35 sheets
- Typical time
- 2–3 weeks; revisions in under a week
Want to see finished work first? Browse our success stories and sample deliverables, or ask us to draft a sample sheet from your own project.
From Your Markups to an Issued Drawing Set
Scope and quote
We review your files, list missing information and confirm sheets, price and dates.
Set-up to your standards
Templates, layers, title blocks and ISO 19650 naming are configured before drafting.
Draft and check
A second drafter checks dimensions, references and annotation against the source.
Issue overnight
Sets and revisions arrive ready for the start of your UK working day, with a revision log.
Questions London Teams Ask Before Outsourcing Drafting
Do you have an office in the UK?
Yes. Our UK office is at 56 Guildford Street, Chertsey, Surrey, KT16 9BE, and you can call us on +44 74 2787 2167. Drafting production is carried out by our delivery team in India, which is why we can turn revisions around overnight.
Can you work to BS EN ISO 19650 naming and revision codes?
Yes. We follow the file naming, status codes and revision conventions in your information requirements or BIM execution plan, and keep the drawing register up to date with every issue.
Do you sign off drawings for Building Regulations?
No. We are a drafting team. We draft to the details your designer specifies against the Approved Documents, but design responsibility, Building Regulations compliance and any principal designer duties stay with your appointed professionals.
How quickly can you turn round revisions?
Because our production team works ahead of UK time, approved markups sent by the end of your working day are usually returned by the next morning. Larger revisions are scheduled when we confirm the scope.
How much does CAD drafting cost for a London project?
Pricing depends on sheet count, disciplines, the quality of your source files and how many revision rounds you expect. Send your drawings and we’ll return a fixed quote with a sheet list and delivery date.
Related Services
Other Optimar Precon services for London and UK projects:
Have Drawings Ready for Drafting?
Send the files and your deadline. You’ll get a sheet list, a fixed price and a delivery date, and a UK contact for the rest of the project.
Get a Drafting Quote →