Outsourcing vs In-House Engineering: Real Cost Drivers
The real difference between outsourcing and an in-house engineering team is not the salary. It is everything around the salary: employment costs, recruitment, equipment, software, workspace, management time, idle time and replacement. Compare those line by line and you can see which option costs less for your workload, rather than relying on a headline rate.
By Fayez 5 min read
Start with the right comparison
A common mistake is to compare an outsourced monthly rate with an in-house salary. They are not the same thing. The salary is only one part of what an employee costs. A fair comparison puts both options on the same basis: the full monthly cost of one person doing the work, including everything the business pays for them.
Below are the cost drivers to compare, in the order they usually matter.
1. Salary and employment costs
In-house, you pay salary plus employer costs: payroll taxes or social contributions, pension contributions, paid leave, sick leave, insurance and any benefits you offer. These vary by country, but they sit on top of the salary and are paid whether the person is busy or not.
With an outsourcing provider that employs the people directly, these costs are included in the monthly rate. At OEG, one monthly rate per person covers salary, employment costs, equipment, workspace and account management.
2. Recruitment
Hiring in-house means advertising, agency fees or staff time spent screening and interviewing. Agency fees are often quoted as a percentage of first-year salary. When a hire does not work out, you pay for the search again.
Some outsourcing models charge a recruitment fee as well. Ask the question before you sign. OEG charges no recruitment fee and no percentage of salary, and replaces anyone who is not the right fit at its own cost.
3. Equipment, software and workspace
An engineer needs a capable computer and licences for the software the work needs, for example Revit, AutoCAD or Navisworks for BIM and drafting. Add the desk, power, internet, and the IT support to look after it all. These are easy to forget because they are spread across several budgets.
If your team works on your own licensed software and servers, include that in the comparison for both options. A provider can often work inside your systems and VPN, in which case you keep control of the licences and the files.
4. Management time
Every team member needs direction, review and feedback. This is a cost on both sides: an in-house employee uses their manager's time, and an outsourced team uses a coordinator's. The difference is how much of it you have to provide yourself. Ask who manages the people day to day, who handles leave cover and performance issues, and what you are expected to do.
5. Utilisation and idle time
An in-house team is a fixed cost. If the workload drops for two months, you still pay everyone. If it rises, you cannot add capacity overnight. Outsourcing helps most when work is uneven, because you can add or reduce people with notice instead of recruiting or making redundancies. Check the notice period and minimum term. OEG has no minimum term and requires 30 days' notice.
If your workload is steady and long-term, the gap narrows, because there is less idle time to avoid.
6. Ramp-up time
A new in-house hire can take months to find and weeks to become productive. A provider with a bench of vetted candidates can usually shorten the search. For CAD and BIM roles, OEG gives named profiles and a rate within 24 to 48 hours and a start about two weeks out is normal. Specialist engineering roles take longer, three to four weeks.
Ramp-up on your own standards is still needed in both cases. Provide templates and examples early.
7. Turnover and continuity
When an employee leaves, you lose their knowledge and pay to replace them. Ask any provider how replacements work, who pays for them and how knowledge is handed over. A provider that employs its people directly and covers leave and replacement reduces this risk for you.
8. Compliance, contracts and IP
In-house hires come with employment law obligations in your country. Outsourcing moves some of that to the provider but introduces others: contracts, data protection, confidentiality and intellectual property. Look for an NDA before you share anything, clear assignment of IP to you, and the right to work inside your own systems.
9. Quality and rework
The cheapest option is not the cheapest if the work comes back. Measure quality with a figure you can check. One example is first-pass approval on shop drawings: on King Salman Park, 954 of 973 structural shop drawings reviewed by the main contractor were approved first time. Read the details in our King Salman Park case study.
A simple way to compare
Build a table with two columns, in-house and outsourced, and one row for each driver above. Fill in a monthly figure for each, using real quotes where you have them. Then add a row for risk: what happens if workload falls, if someone leaves, or if quality is poor.
- Fixed, long-term, steady workload: in-house can be competitive.
- Uneven workload, urgent starts or specialist roles: outsourcing often has the advantage.
- Mixed: keep a small core team in-house and add outsourced capacity for peaks.
For cost, OEG quotes usually land 40 to 60 percent below hiring the same skills in Western Europe, the UK or North America. Your own figure will depend on the role, the location and what you include, so compare using your own numbers.
Frequently asked questions
Is outsourcing engineering always cheaper than hiring in-house?
No. It is usually cheaper when you count employment costs, recruitment, equipment and idle time, but a steady, long-term workload narrows the gap. Compare the full monthly cost of both options.
What hidden costs should I look for?
Recruitment fees, software licences, equipment, management time, replacement of people who leave, and minimum contract terms. Ask each provider whether they are included.
Can an outsourced team work inside my own systems?
Often yes. OEG's teams can work inside your own systems and VPN, in your templates and standards, so files never need to leave your environment.
If you want a rate for a specific role, see our CAD drafting and BIM teams or book a consultation.