A quantity surveyor has a tender closing Friday and needs three prices for the M&E package. The list of who gets asked was settled well before anyone opened a browser.
That list is the whole game. Everything a mechanical and electrical subcontractor does on price, on programme, on relationships, happens after the list exists. If you are not on it, you never find out that the job was tendered, let alone why you were not asked. And unlike a lost bid, nobody sends you a letter.
So it is worth being precise about how the list gets built, and what gets checked before your name goes on it. Almost none of it happens on your website. Some of it should.
How does a main contractor build the M&E tender list?
Names arrive from five or six places, roughly in this order of frequency.
The firm that did the last job of this type, if it went acceptably. The client’s or the consultant’s own preferred list, which sometimes arrives with the tender documents and is not negotiable. The estimator’s spreadsheet of firms who have priced work before, whether or not they won. A recommendation from a project manager who has worked with someone and trusts them. The BCA register, filtered by workhead and grade, when the estimator needs to widen the field.
And then, when the list is short or the package is unusual, a search.
The important thing about that order is that the website is rarely the first touch. It is almost always the second. Someone has your name from one of the routes above and is now checking whether you look like a firm that can carry this package. That is a verification exercise, not a discovery one, and it is over quickly.
What actually gets checked
Here is the set, in the order it tends to get worked through.
Registration and workhead. In Singapore this starts with the BCA Contractors Registration System, which BCA describes as the nation-wide registry of construction firms and which carries about 50 types of workheads across five registration groups. Registration is required to participate in public sector construction tenders, to work as a first-level subcontractor on public sector projects, and since June 2025 to hire construction S Pass and Work Permit holders at all.
For M&E packages the relevant heads sit in the Mechanical and Electrical group. ME01 is air-conditioning, refrigeration and ventilation works. ME05 is electrical engineering. ME11 is mechanical engineering. Fire protection, plumbing and sanitary, communications and security systems and lift installation each have their own head. A firm that says it does M&E and holds one head is a very different proposition from a firm that holds four.
Financial grade and tendering limit. Each head carries a grade, and the grade carries a ceiling. ME and CR heads run L1 to L6, and BCA publishes the tendering limits for each. L5 is capped at S$16 million. L6 is unlimited. CW heads use the A1 to C3 scale instead, where A1 is unlimited and A2 is capped at S$105 million.
This is the fastest filter in the whole process. An estimator with a S$20 million package does not send it to an L4 firm, no matter how good they are, because the invitation would be pointless. Publishing your grade is not boasting. It is telling people which packages to send you.
Safety. Main contractors set a minimum bizSAFE level as a subcontract condition more often than not, and the levels are not interchangeable. Level 1 is a top executive attending a programme. Level 2 is a trained risk management champion. Level 3 requires an audit by an MOM-registered auditing organisation. Level 4 adds a WSH management system competency. bizSAFE Star requires an SS 651:2019 or an ISO 45001:2018 certificate from an accredited certification body, submitted with a risk management audit report. Star is a materially harder thing to hold than Level 3, and the people reading your prequalification form know the difference.
Safety performance is also getting more load-bearing, not less. MOM reported that the construction sector’s fatal and major injury rate fell from 31.0 to 26.3 per 100,000 workers between 2024 and 2025, with small-scale construction works still accounting for over 60% of those injuries, and it flagged an ongoing review of the bizSAFE framework aimed at putting more weight on a company’s actual WSH performance. A main contractor carries your incidents on their project. They price that risk whether or not they say so.
Licensed and competent personnel. For electrical scope, a Licensed Electrical Worker at the right class. For specialist work, the relevant competencies and who holds them. Registration proves the firm. Licences prove the people, and it is the people who turn up.
Comparable work. Not “we have done commercial projects”. The same building type, at a similar scale, on a similar programme, ideally under a main contractor whose name the reader recognises. A hospital fit-out and a warehouse are both M&E packages and almost nothing else about them is the same.
What you self-perform. This one is asked constantly and answered almost nowhere. If a package covers electrical, ACMV, fire protection and plumbing, the main contractor wants to know how much of that is your own labour and how much gets sublet to someone they have not vetted. A firm that carries the whole package removes a coordination problem. A firm that sublets three quarters of it creates one.
Capacity now, insurance, financial standing. Whether you are already committed. Whether the insurance covers the package value. Whether the accounts look like a business that will still exist at defects liability.
Almost none of that is on the average subcontractor website
We went and checked, rather than assuming.
Across 54 Singapore B2B sites we reviewed in August 2026, 12 were engineering, M&E or precision firms. Half of those 12 were running an outdated or end-of-life CMS or plugin. Engineering was the sector most likely to run WordPress and least likely to patch it, which is a strange result for an industry that is meticulous about maintenance schedules on everything it touches except this.
The pattern underneath that is worse than the software. It is hard-won accreditation sitting on a neglected site.
One firm holds API Q1, the quality management specification for the oil and gas supply chain, on a domain whose footer still reads 2019 and whose last word is missing a letter. Another holds AS9100D, the aerospace quality standard, on a site whose News link returns HTTP 500 and whose newest document is a brochure from 2018. A third employs ASNT Level III inspectors, which is a genuinely scarce qualification, and documents them nowhere at all. The only contact route is a consumer ISP mailbox.
None of those firms is bad at engineering. Getting API Q1 or AS9100D is difficult and expensive and nobody does it by accident. They are simply invisible in the one place a buyer looks between hearing your name and picking up the phone.
The construction sites in the same review showed a version of this that is specific to Singapore. Grades held, and not published where a QS would look. A CW02 A1 registration. A CR08 piling head. An A1 general building registration with an unlimited tender value. A Licensed Builder Class 1 licence. All real, all held, and in each case either buried, out of date, or absent from the site entirely while sitting perfectly visible in a government register.
And 19 of the 54 sites published no project record of any kind. No jobs, no buildings, no scope, nothing. For a subcontractor whose entire case rests on comparable work, that is the equivalent of turning up to a prequalification interview with no portfolio and offering to describe it verbally.
If the QS checks the registers anyway, does the website matter?
Fair question, and the honest answer is that it matters for a narrower reason than most agencies would tell you.
The registers are authoritative and they are what gets relied on. Your website will never replace them, and a page claiming a grade you do not hold is worse than useless. So the site is not the source of truth.
What the site does is answer the questions the registers cannot hold. The register says you have ME05 at L5. It does not say whether you self-perform the ACMV or sublet it. It does not name the project manager who would run the job. It does not tell an estimator that you did a comparable package on a comparable building two years ago and finished on programme. It does not tell anyone how fast you answer the phone.
And there is a comparison effect that is easy to underestimate. When two firms hold the same head at the same grade, the register cannot separate them and the estimator has to. At that point the only available evidence is what each firm has published about itself, and one of them has a project record and a named contact while the other has a stock photograph of a circuit board and a form.
What to publish, in the order it gets checked
Not a redesign. An inventory, and then a small number of pages that carry it.
Your registration line, in text. Workheads and grades written out, current, with the date they were last confirmed. Not a PDF, not a logo strip, not an image. Text that can be read, copied into a prequalification form, and found by a search.
Certifications with scope and status. bizSAFE level, ISO certificates with the certificate number and the scope they cover, sector accreditations like API Q1 or AS9100D stated properly. A certificate with no scope is decoration. A certificate with its scope is evidence.
What you self-perform versus what you sublet. Say it plainly. It is the question behind most of the others, and a straight answer builds more trust than a vague claim of full capability.
A project record with the details that matter. Building type, package scope, approximate value band, programme, main contractor where you are permitted to name them. If you are not permitted, describe it anonymously and precisely. “A 14-storey commercial fit-out, full electrical and ACMV package, live building, 26 weeks” tells an estimator everything without naming anyone.
Named people. The project managers and licensed workers who actually run jobs, with their qualifications. This is the part of a subcontractor’s site that is most often empty and most often decisive, because a main contractor is buying a team, not a company.
A working contact route. In the same review, 7 of the 54 sites had a contact page or nav link returning a server error or a 404, and several published an email address only as an image, so it could not be copied or clicked. An estimator with a deadline does not retype an email address from a picture.
That is roughly the structure behind the site we built for THK Engineering, who run electrical, ACMV, fire protection, plumbing and sanitary and ELV. The decision was to present the five disciplines as one package rather than five services, because the question being answered at tender is whether the whole thing can be handed over intact. Hong Hock Global works the same way in water infrastructure, where the work is awarded almost entirely on prequalification and the certifications had to move to the front.
What this actually changes
It does not win you the package. M&E work is won on price, capacity, programme and the relationship, and no website outranks any of those.
What it changes is whether you are in the set where those four get compared. An estimator widening a shortlist from a register, a project manager checking a name they were given, a consultant assembling a preferred list: all three are doing a filtering exercise, and filtering is precisely the thing a website is good or bad at.
If you want a starting point, do the inventory before you talk to anyone about design. Write down every workhead and grade you hold, every certification with its scope and expiry, every licensed person and their class, and the last 3 years of projects with building type and package scope. Then open your own site and count how many of those facts appear on it, and how many clicks each one takes to reach.
Most firms find that the majority is missing or three levels deep. That gap is the brief, and it is a content problem long before it is a design one.
We work with engineering, M&E and construction firms in Singapore on exactly this. Projects start from S$4,000 for a refresh where the technical content already exists, and what moves the number is how much of it has to be gathered from scratch, which for a subcontractor is usually the project record. Our pricing bands are published rather than quoted on request, and every build includes 30 days of post-launch support.