Joint Venture or Acquisition: Buying a Vietnamese Construction Contractor

Updated: 22 October 2026 · IVLF Advisors

A contractor with a strong order book can be a poor acquisition if its bonds are exposed, its key engineers can leave and its legacy contracts were signed on terms that no longer fit. For an investor who wants to joint venture acquire Vietnamese construction contractor capacity instead of building from scratch, speed is the attraction and hidden contract liability is the risk. The deal is won or lost on diligence into the target’s capacity record, its people and its open contracts, read against the sectors in which the target actually works.

Why investors buy or partner with a local contractor

Building a Vietnamese construction business from nothing takes time. The company must be established, its capacity must be demonstrated, its people must be credentialed and its track record must be earned. Acquiring or partnering with an established contractor short-cuts part of that path.

The same shortcut imports history. Everything the target has promised, guaranteed, warranted or disputed becomes the investor’s problem in a share deal. The legal structure you choose therefore matters as much as the price.

The realistic options are:

• Acquisition of a controlling stake in an existing contractor by share purchase or capital contribution.
• Acquisition of a minority stake with governance rights and an option to increase.
• An incorporated joint venture company with a Vietnamese partner, funded by both.
• A contractual joint venture or consortium for a defined bid or project, with no new entity.

The 50% line: how foreign ownership changes the target’s status

The Law on Investment No. 143/2025/QH15, effective 1 March 2026, turns on ownership percentages. Under Article 20, an economic organisation is treated as a foreign investor, and must meet the conditions and procedures that apply to foreign investors, when foreign investors hold more than 50% of its charter capital. The same applies when an entity of that kind holds more than 50%, or when foreign investors and such an entity together hold more than 50%. A company in which foreign investors hold 50% or less follows the conditions and procedures for domestic investors.

Article 26 links this classification to the investment registration certificate. Projects of foreign investors, and of companies treated as foreign investors under Article 20, require the certificate. Projects of domestic investors, and of companies at or below the 50% line, do not, although a certificate can be sought voluntarily. Article 20 also confirms that an established foreign-invested company with a new project can handle the project procedure without necessarily creating a new legal entity.

The result for a joint venture acquire Vietnamese construction contractor transaction is a threshold effect. A stake of exactly 50% or less leaves the target in the domestic category. A stake above 50% moves the target, and its future investment projects, into the foreign-investor regime and its market access conditions.

Market access conditions and pricing the deal

Article 8 of the Law on Investment treats foreign investors like domestic investors except in sectors on the Government’s list of restricted market access. Within that list, conditions can concern equity ratio, form of investment, scope of operation or partner capability. According to DEDICA Law, the schedule to Decree 96/2026/ND-CP includes entries covering construction and related technical services and construction activity by foreign contractors.

We do not assert any ownership ceiling or specific condition for construction services in this article, because the specific conditions depend on the list and treaty commitments in force when the application is filed. Our note on market access for a foreign-invested construction company in Vietnam sets out how to approach that check.

Acquiring or partnering with a Vietnamese construction contractorInvestorbuyer or joint venture partnerTarget contractorVietnamese construction companyVietnamese partnerincorporated or contractual JVForeign-investor regimeabove 50%: Articles 20 and 26Legal due diligencecapacity, people, contracts,bondsLegacy contracts andbondshistory of the target1234561Diligence on the target before committing2Open contracts, bonds and cash are reviewed3Stake bought or capital contributed4Partner option: joint venture with the target5Foreign stake above 50% changes the target status6Legacy promises come with a share deal

Joint venture acquire Vietnamese construction contractor: comparing the four structures

The table below is a first-pass comparison. It should be refined against the market access conclusion, the target’s contract portfolio and the tax analysis, which we have not carried out here.

Structure	Main advantage	Main risk	Foreign-investor regime
Controlling share purchase (above 50%)	Control and consolidation; inherits record and workforce	All historic liabilities stay in the company	Target treated as a foreign investor (Law on Investment, Art 20)
Minority or 50% stake	Lower exposure; staged entry	Weaker control; governance depends on the shareholders’ agreement	Target generally remains in the domestic category at 50% or below
New joint venture company	Clean entity; negotiated governance	No track record; partner dependence	Depends on foreign share of charter capital
Contractual joint venture or consortium	Fast; no equity exposure	Joint liability; fragile for long programmes	No new entity; licence rules apply if a foreign contractor is involved

Diligence on the contractor’s capacity record

Capacity diligence starts with how Vietnam now evidences organisational capacity. Article 88(6) of the Law on Construction provides that organisations publish their own capacity information on the Ministry of Construction’s web portal, and that this information is a reference for owners when selecting contractors. Article 41 of Decree 212/2026/ND-CP implements this on the platform at csdlhdxd.gov.vn. The legal representative is fully responsible for accuracy, and the content includes the company’s details, capacity drawn from the construction information system and, if applicable, the grade and field under any capacity certificate previously issued.

Three diligence questions follow:

• Does the disclosed capacity match what the seller presents in the information memorandum, project by project?
• Is the disclosure current and verifiable, with a log of updates?
• If the target relies on an older capacity certificate, has its status after the 2026 reforms been assessed under the transitional rules?

An inflated or stale disclosure is more than a presentation issue. It is a statement by the legal representative about a matter owners rely on in selection, so inaccuracy can feed disputes and warranty claims. Treat it as a diligence red flag and a candidate for a specific indemnity.

Diligence on people and practising certificates

A contractor’s value sits partly in its credentialed individuals. Under Article 88(1) of the Law on Construction, named leads of survey, design, design verification, supervision and cost functions need practising certificates, graded I, II or III. Under Article 88(2), site commanders, those leading construction inspection and project management directors must meet capacity and experience conditions, which Decree 212/2026/ND-CP details.

The diligence checklist for people should cover:

• a roster of key individuals, with certificate type, field, grade and validity, matched to current project assignments;
• whether the certificates remain in good standing, since the decree provides for revocation;
• dependence on a small number of individuals, particularly for supervision and project management director roles;
• retention arrangements for those individuals, including notice periods and restrictive covenants that are enforceable under Vietnamese labour rules.

If the foreign buyer plans to place its own engineers in the target, the recognition route for foreign credentials matters. We discuss it in our note on practising certificates for foreign engineers, and the work authorisation rules, which we have not analysed here, apply in parallel.

Why key-person risk belongs in the price

Where one individual holds the certificate that supports several live projects, losing that person can strand the target’s ability to perform. Reflect this in the transaction through conditions to closing, retention incentives tied to completion, and a purchase price mechanism that responds to departures during an agreed period. These are commercial protections reflecting market practice, not statutory requirements.

Diligence on open contracts: where the real liability sits

The open contract book is where most unexpected loss emerges. The right review depends first on whether each contract is a public investment or PPP contract or a private one, because the detailed numeric rules of Decree 210/2026/ND-CP apply only to the first group. On private contracts, the parties’ agreement governs.

For each material contract, diligence should answer the following.

• Pricing form. Lump-sum, fixed unit rate, adjustable unit rate, cost-plus and the others behave very differently when costs move. Decree 210/2026/ND-CP states that a lump-sum price does not change except for force majeure, fundamental change of circumstances, change of scope or agreement.
• Which regime governs. Public and PPP contracts signed and being performed before 1 July 2026 continue under the rules in force before that date, subject to an exception in the Law on Construction. For other projects, parties performing earlier contracts may agree to apply the new decree, and absent agreement the rules at signing apply.
• Assignment and change of control. Under Article 27(2)(a) of Decree 210/2026/ND-CP, assigning a contract without the other party’s consent is a serious breach that can justify termination. A share purchase does not transfer the contract, but change-of-control clauses may bite, and an asset transfer plainly needs consent.
• Termination and suspension exposure. The decree’s default 56-day periods for termination rights can be varied by agreement, and its 28-day suspension period applies to public investment and PPP projects only. Check each contract’s own mechanics.
• Penalties and damages. For public investment and PPP, Article 86(3) of the Law on Construction caps contract penalties at 12% of the value of the breached part, in addition to damages. Private contracts follow the agreed terms, subject to general law.
• Subcontractor chains. The main contractor is responsible to the owner for its own and its subcontractors’ work, including quality, schedule and safety, so subcontractor claims and defaults can flow upward to the target.

Diligence on bonds, guarantees and cash

Contractors fund themselves partly through advance payments and carry their promises in bank guarantees. A buyer that overlooks the guarantee book acquires contingent liabilities it cannot see on the balance sheet.

For public investment and PPP contracts, Decree 210/2026/ND-CP sets out a structure: performance security in the range of 2% to 10% of contract value, a guarantee for advance payments above VND 1 billion, payment security and a warranty security whose level follows the separate decree on quality and maintenance. Advances are recovered progressively and in full when cumulative payments reach 80% of contract value. These figures apply to public investment and PPP only; private projects follow party agreement.

Diligence on the guarantee book should establish:

• a schedule of every outstanding guarantee, with amount, beneficiary, expiry and the facility under which it was issued;
• whether the issuing banks have counter-security, such as deposits or charges over assets, that will be affected by the change of ownership;
• advances received and not yet recovered, since unrecovered advances are an obligation to perform or repay;
• retention and withheld payments, and whether they are recoverable;
• warranty periods and bonds on completed work, which continue to bind after practical completion. Warranty detail depends on the decrees on quality and maintenance, which we have not analysed.

Also check insurance cover. The Law on Construction requires mandatory insurance and refers to a separate decree for details, which we have not analysed in this article.

Contractual joint ventures: the lighter alternative

For a single project or bid, a contractual joint venture avoids the need for an acquisition. It does, however, concentrate liability. Under Decree 210/2026/ND-CP, a joint venture’s payment arrangements and security can be agreed in the contract or joint venture agreement, and each member may provide security for its share or the lead member may provide it for all. The joint venture agreement should settle leadership, scope split, cost sharing, credentialed personnel and what happens if one member defaults.

Where a foreign contractor is a member, Article 43 of Decree 212/2026/ND-CP requires the foreign party to team with a Vietnamese contractor or use Vietnamese subcontractors unless no domestic contractor can perform any part of the package. For the bidding dimension, see our guide to joint ventures between contractors bidding in Vietnam. Procurement rules under the Law on Bidding 2023 and the PPP law are outside this article’s scope.

Joint venture acquire Vietnamese construction contractor: protections in the deal documents

Whether the route is equity or contract, the documents carry the risk allocation. In an acquisition, the share purchase agreement should include these items, which reflect market practice:

• warranties on capacity disclosure, credentials, contract portfolio, guarantees, disputes and compliance;
• specific indemnities for identified problems, supported by escrow or a retention from the price;
• conditions precedent covering market access conclusions, creditor and beneficiary consents, and key-person retention;
• pre-closing covenants restricting new bids, guarantees or contract amendments without the buyer’s consent;
• a defined dispute forum. For private contracts the parties choose the method, whether negotiation, mediation, arbitration or court.

In a joint venture company, the shareholders’ agreement should settle reserved matters, funding, deadlock, transfer restrictions and exit. A foreign minority holder in particular should negotiate vetoes over guarantees and new bids, since these are the levers through which a construction company can create large contingent liabilities.

Matters outside the scope of this article

This article deliberately stops short of three areas that will affect your deal. Tax treatment of share transfers, capital contributions and any restructuring is outside its scope and needs separate advice. Merger control and any other regulatory approvals for the transaction should be checked against current rules. Work authorisation for foreign personnel placed in the target is governed by separate legislation. Each should be on the workplan from the start.

Joint Venture Acquire Vietnamese Construction Contractor: Diligence by Project Type

A target’s value depends on the sector mix of its order book. Tailor diligence to the project types it builds.

Infrastructure and transport: public-client exposure

A contractor with road, port, rail or terminal contracts is often working for State or State-owned employers on public or PPP projects, whose classification depends on funding.

Programmes such as The North–South high-speed railway (about 1,541 km from Hanoi to Ho Chi Minh City through 15 provinces and cities, design speed 350 km/h, per press reports of 9 October 2026) and Long Thành International Airport, whose phase 1 passenger terminal works began on 31 August 2023 and whose phase 1 commercial operation is expected from 24 December 2026 per press reports, show the size of this market, but a target’s participation must be proved from its own contracts, not from press coverage. Review the public-contract payment rules, final-account status and retention held by the employer.

Heavy industry and FDI factories: guarantees and delay damages

Contracts with plant owners often carry large performance and advance guarantees and delay damages tied to commissioning. Review bonds outstanding, counter-indemnities given by shareholders, and commissioning schedules of open factory contracts.

Renewable energy and power: grid and offshore exposure

Energy contracts may include long-lead equipment, grid-connection dependencies and, offshore, marine risk and specialist insurance. Ownership and the power-purchase structure drive risk, so the status is fact-specific. Ask for the insurance programme and any subcontract with marine contractors.

Real estate: developer credit and payment security

Resort, hotel, urban-area, mixed-use and housing contracts are private and follow the parties’ agreement. The main diligence risk is developer credit: unpaid certificates and retentions on stalled schemes. Review ageing of receivables and whether the developer’s land and real-estate position supports payment.

Sector	Typical contract or risk feature	Diligence focus
Infrastructure and transport	Public or PPP; long payment chains	Receivables, retention, final accounts
Heavy industry and factories	Large guarantees; delay damages	Bonds, counter-indemnities, commissioning
Energy and power	Long-lead equipment; offshore marine risk	Insurance, subcontracts, grid dependencies
Real estate	Private; developer credit risk	Receivables ageing; developer finances

Conclusion

A well-run joint venture acquire Vietnamese construction contractor transaction treats the target as a bundle of people, contracts and guarantees, not merely a corporate shell. Use the 50% line in Article 20 of the Law on Investment to frame structure, assess market access, and concentrate diligence on the capacity disclosure, the credential holders and the open contract and guarantee book. As a first step, prepare a data request list covering those four areas and a short list of structures to compare.

Frequently Asked Questions

Does a foreign buyer need an investment certificate to buy a contractor?

Not necessarily for the share purchase itself, but market access conditions apply and the rules vary by structure. Above 50% foreign ownership, the target is treated as a foreign investor. The procedure depends on the rules in force at the time of the deal.

What changes if foreign ownership exceeds 50%?

Under Article 20 of the Law on Investment, the target must meet the conditions and procedures that apply to foreign investors, and its projects fall within the certificate requirement in Article 26.

How do I check a contractor’s capacity?

Review the self-disclosed capacity on the national construction database, test it against project records, and check the practising certificates of the key individuals named for each role.

Are old capacity certificates still valid?

That depends on the transitional rules and the date of issue. Under the current framework, organisations self-disclose capacity, and any earlier certificate is mentioned only where it exists.

Is a contractual joint venture safer than an acquisition?

It avoids buying historic liabilities but concentrates liability on the project and depends on partner performance. Which is safer depends on the project, the partner and the agreement.

Disclaimer: this article provides general information, not legal advice for any specific matter. It reflects the law as understood on 22 October 2026. Please obtain advice on your own facts before acting.