Quick answer

If a contractor charges more than the agreed price without an authorized change order, abandons the project, misses a material completion deadline, or delivers defective or incomplete work, do not keep paying automatically. Secure the site, document the work, compare actual progress against the contract and plans, obtain an independent professional assessment, and send a formal written demand giving the contractor a reasonable opportunity to explain or cure the breach.

Your remedy may include requiring completion or correction, rejecting unsupported additional charges, hiring another contractor and claiming the reasonable completion or repair cost, recovering overpayments and provable damages, or ending the contract for a substantial breach. The correct remedy depends on the contract, the seriousness of the breach, the evidence, and whether the agreement requires arbitration before the Construction Industry Arbitration Commission (CIAC).

Do not simply lock out the contractor, demolish completed work, or hire a replacement without first documenting conditions and checking the termination, notice, cure, payment, and dispute-resolution clauses. An unjustified termination or withholding of amounts already due could expose the owner to a counterclaim.

What counts as an overcharge?

Start with the signed contract, proposal, bill of quantities, plans, specifications, payment schedule, and approved change orders. An amount that

Quick answer

If a contractor charges more than the agreed price without proper authorization, abandons the project, misses a material deadline, or delivers defective or incomplete work, do not immediately pay the disputed amount or hire a replacement without first documenting the condition of the project and reviewing the contract.

Send the contractor a written notice identifying the overcharge, delay, defects, or unfinished items; cite the applicable plans, specifications, bill of quantities, payment schedule, and approved change orders; and give a reasonable contractual deadline to explain, correct, or complete the work. Preserve proof of delivery.

Depending on the contract and the seriousness of the breach, you may seek completion or correction at the contractor’s expense, reimbursement, damages, a reduction of the price, termination or resolution of the contract, or recovery through settlement, barangay conciliation, the Construction Industry Arbitration Commission (CIAC), or the courts.

The correct remedy depends heavily on the written contract, payment records, approved variations, actual percentage of completion, and whether the parties agreed to construction arbitration.

When is an additional charge improper?

Start with the contract. Compare the demand against the agreed scope, price, plans, specifications, material schedule, progress-payment milestones, and rules for variations.

An additional charge is particularly questionable when:

The contract states a fixed or lump-sum price and the contractor merely says labor or materials became more expensive.
The claimed work was already included in the original plans, specifications, bill of quantities, or scope.
No owner-approved change order exists.
The contractor proceeded with additional work without first disclosing and agreeing on its price.
The claimed percentage of completion is higher than the work actually accomplished.
Receipts, delivery records, measurements, or supplier invoices do not support the charge.
The contractor substituted cheaper or inferior materials but billed for the specified materials.
The contractor is charging for rework needed to correct its own defects or mistakes.
The contractor seeks payment for materials that were never delivered to the site.

For construction undertaken for a stipulated price in accordance with plans and specifications agreed with the landowner, Article 1724 of the Civil Code generally prevents the contractor from increasing the price merely because labor or materials became more expensive. An increase based on changed plans or specifications requires both:

The proprietor’s written authorization for the change; and
A written agreement by both parties on the additional price.

The Supreme Court has repeatedly applied these written requirements to claims for additional construction work. A contractor generally cannot determine changes and their price unilaterally. See the Civil Code, particularly Article 1724 and the Supreme Court’s decisions in Salvador v. Court of Appeals and Atlantic Erectors, Inc. v. Court of Appeals.

This rule does not automatically invalidate every additional charge. The result may differ when the contract is cost-plus rather than fixed-price, contains a valid escalation formula, authorizes measured quantities or allowances, or documents a properly approved change. Owner-caused delay, late decisions, site conditions, or owner-supplied defective materials may also affect the amount due.

What counts as failure to complete?

Failure to complete may include:

Abandoning the site without lawful or contractual justification;
Missing the completion date after applicable extensions;
Repeatedly failing to provide enough workers or materials;
Stopping work after receiving payment for a milestone that was not achieved;
Refusing to correct major defects;
Completing only part of the agreed scope;
Departing materially from the approved plans or specifications; or
Making clear that the contractor will no longer perform its obligations.

A minor delay or incomplete punch list does not always justify immediate termination. Check whether the contract requires a written notice to correct, a cure period, certification by an architect or engineer, or another step before termination. Also determine whether the delay was caused by the contractor, the owner, an approved variation, permit problems, force majeure, or another excusable event.

Under Articles 1167 and 1170 of the Civil Code, a party who fails to perform an obligation, performs it contrary to its terms, or acts with fraud, negligence, delay, or contravention of the agreement may be liable for appropriate relief and damages. Article 1191 may permit resolution of a reciprocal contract for a substantial—not merely slight—breach, with damages where legally justified. Because an unjustified termination can itself expose the owner to liability, obtain legal advice before terminating a substantial project or taking over the site.

Rights when the work is defective

Article 1715 of the Civil Code requires the contractor to produce work with the agreed qualities and without defects that destroy or reduce its value or fitness for its ordinary or stipulated use.

If the work does not meet that standard, the owner may require the contractor to remove the defect or redo the work. If the contractor fails or refuses, the law allows the owner to have the defect removed or the work redone at the contractor’s cost.

Acceptance can affect ordinary visible defects. Article 1719 generally relieves the contractor from liability after acceptance, except when the defect was hidden and the owner could not reasonably be expected to recognize it, or when the owner expressly reserved rights regarding the defect. For this reason, do not sign an unconditional acceptance, completion certificate, or waiver while known defects remain. Put reservations and the punch list in writing.

Special rules apply when a building collapses because of defective plans, defective construction, inferior contractor-supplied materials, or violation of the contract. Article 1723 contains specific liability and time provisions for those cases. Structural failure requires prompt advice from an independent engineer and a lawyer rather than reliance on an ordinary warranty claim.

What to do now

1. Secure the site and protect people

If there are cracks, leaning walls, unstable scaffolding, exposed electrical wiring, severe leaks near electrical systems, excavation hazards, or any possible structural danger, stop using the affected area and keep people away.

Ask an independent licensed civil or structural engineer to inspect it. Report an apparently dangerous or code-violating structure to the local Office of the Building Official. Under the National Building Code, the Building Official may inspect noncompliant work, order work stopped, or order repair, vacation, or demolition depending on the danger to life, health, or safety. The Supreme Court discusses this authority in Gancayco v. City Government of Quezon City.

Do not demolish, cover, or substantially alter disputed work before it is photographed, measured, and professionally inspected unless immediate safety measures are necessary.

2. Review every contract document

Collect and read:

The signed construction contract and annexes;
Approved plans and technical specifications;
Bill of quantities, cost breakdown, and material schedule;
Work program and completion schedule;
Progress-billing and retention provisions;
Warranty, delay, liquidated-damages, and termination clauses;
Variation or change-order procedure;
Extension-of-time notices;
Arbitration, mediation, and dispute-resolution clauses;
Performance bond, surety bond, or contractor’s insurance documents; and
Permits and inspection records.

Do not rely only on the original quotation. Later signed amendments, approved drawings, emails, and change orders may have modified the agreement.

3. Create a payment-and-progress reconciliation

Prepare a simple table showing:

Item	Contract or approved amount	Amount billed	Amount paid	Verified completion	Disputed amount
Original scope
Approved change orders
Unapproved additions
Defective or missing work
Retention or credits

Have an independent architect, engineer, or quantity surveyor verify measurements, materials, defects, percentage of completion, and the reasonable cost to finish or correct the work. Ask for a signed report with dated photographs and a clear basis for each estimate.

4. Preserve evidence

Keep original or backed-up copies of:

Contracts, quotations, plans, specifications, and change orders;
Official receipts, invoices, bank transfers, checks, and acknowledgment receipts;
Progress billings and certificates;
Text messages, emails, chat conversations, and call summaries;
Dated photographs and videos showing the entire site and close-ups;
CCTV footage, if relevant;
Daily logs, delivery receipts, inspection reports, and attendance records;
Lists of materials delivered, installed, removed, or left on site;
Notices of delay, demands for payment, and contractor replies;
Independent completion and repair estimates;
Permits, notices of violation, and records from the Building Official; and
The contractor’s business details, address, PCAB license information, and names of authorized representatives.

Export important chat threads so that the sender, date, time, and surrounding conversation remain visible. Avoid editing original images or messages. Store copies in more than one secure place.

5. Ask for an itemized written explanation

Require the contractor to identify:

The contract provision supporting the charge;
The work allegedly outside the original scope;
The written authorization for each change;
The agreed additional price;
Quantities, labor, materials, and unit costs;
Supporting receipts or delivery records;
The current percentage of completion; and
A realistic completion and correction schedule.

A vague statement such as “materials increased” or “additional works” is not a substitute for contract-based documentation.

6. Send a formal notice to correct and demand

Your letter should:

Identify the parties, contract, project, and property;
Describe each overcharge, delay, defect, or unfinished item;
Refer to the relevant plans, specifications, milestones, and change-order provisions;
State which amounts are admitted and which are disputed;
Attach or identify supporting photographs, measurements, and payment records;
Demand a written explanation, correction, completion, refund, or other specific remedy;
Give the cure period required by the contract—or a reasonable period if none is stated;
Reserve all contractual and legal rights; and
State that silence or continued nonperformance may lead to the dispute mechanism provided in the contract.

Send it through a method that proves delivery, such as personal service with a signed receiving copy, reputable courier with tracking, or the contractually designated email address. A written extrajudicial demand can also be important in determining delay and prescription, although its legal effect depends on the claim and circumstances.

7. Control further payments carefully

Do not pay an unsupported overcharge merely to keep the project moving. At the same time, do not automatically withhold every amount due. Wrongfully refusing payment for properly completed work may put the owner in breach and can generate interest, damages, or a contractor’s claim.

Follow the contract’s certification, retention, set-off, and dispute procedures. If possible, pay any clearly undisputed amount while expressly stating in writing that the payment does not accept the disputed billing or waive claims. Obtain advice before withholding a large progress payment, calling a bond, or taking possession of contractor-owned tools and equipment.

8. Do not immediately bring in a replacement contractor

First document the existing work and give the original contractor any notice and cure opportunity required by the contract. If replacement becomes necessary:

Obtain an independent inventory and condition report;
Secure the site and materials;
Record which materials belong to whom;
Obtain comparable bids for completion and correction;
Separate the cost of completing the original scope from upgrades or new owner-requested work; and
Preserve invoices and proof of payment to the replacement contractor.

This helps establish whether the claimed completion cost was reasonable and caused by the original contractor’s breach.

Check the contractor’s PCAB license

Republic Act No. 4566 generally prohibits a contractor—including a subcontractor or specialty contractor—from engaging in the contracting business without the required Philippine Contractors Accreditation Board license.

Check the contractor’s identity and license status through the PCAB online portal and license-verification link. Match the legal name, license number, validity period, classification, category, and authorized project capacity with the entity named in your contract.

RA 4566 identifies grounds for disciplinary action that include willful and unjustified abandonment, willful material departure from plans or specifications prejudicial to the owner, and willful or fraudulent acts that cause injury. PCAB may investigate upon a verified written complaint and may impose licensing sanctions. See RA 4566, Sections 28 and 29.

A PCAB complaint is not automatically a substitute for recovering money. Administrative discipline, arbitration, and a civil money claim serve different purposes. Confirm the current complaint requirements directly with PCAB before filing.

Choose the correct dispute route

Negotiation or mediation

A documented settlement is often faster and less costly than formal proceedings. Any agreement should clearly state:

The admitted and disputed amounts;
The exact corrective or completion work;
Materials and standards to be used;
Payment and completion dates;
Site-access arrangements;
Inspection and acceptance procedures;
Consequences of default;
Whether existing claims are released, and when; and
Who pays arbitration, court, professional, or repair costs.

Do not sign a full quitclaim before the promised refund or corrective work is actually completed unless the risk is understood and intentionally accepted.

Barangay conciliation

Barangay conciliation may be a mandatory precondition before filing a court action when the dispute falls within the lupon’s authority—commonly where the individual parties actually reside in the same city or municipality. Venue and exceptions depend on residence, the nature of the parties, the location of real property, urgency, and the other circumstances listed in Sections 408 to 412 of the Local Government Code.

If applicable, obtain the proper certification to file action before going to court. Premature filing can result in dismissal or suspension. Corporations and disputes involving residents of different cities or municipalities require closer analysis; do not assume that barangay conciliation always applies. See Republic Act No. 7160, Sections 408–412.

CIAC arbitration

Check the contract for an arbitration clause or another written agreement to arbitrate. Under Executive Order No. 1008, CIAC may resolve construction disputes involving matters such as:

Workmanship and specification violations;
Contract interpretation;
Delays and completion time;
Defects and maintenance;
Contractor or owner payment default;
Damages and penalties; and
Changes in contract cost.

CIAC jurisdiction requires the parties’ agreement to submit the construction dispute to voluntary arbitration. When a valid construction-arbitration agreement covers the dispute, filing an ordinary court case may be the wrong route. Review the exact wording with counsel. Consult the Construction Industry Arbitration Law and the official CIAC website for current rules, forms, fees, and filing instructions.

Arbitration can require deposits for administrative charges and arbitrators’ fees. Technical expert evidence may also be necessary, particularly for measurement, delay, valuation, and structural-defect claims.

Small claims court

A claim solely for payment or reimbursement of money not exceeding ₱1,000,000, excluding interest and costs, may qualify for small claims procedure in a first-level court if it falls within the Rule’s covered causes of action. A homeowner might use it, for example, to seek a documented refund or reimbursement arising from a construction contract.

Small claims is not suitable when the principal remedy sought is an injunction, an order compelling the contractor to complete work, title to property, or another form of non-monetary relief. The parties ordinarily appear without lawyers advocating for them at the hearing, although legal advice before filing remains useful.

Use the current Supreme Court forms and instructions, attach the contract and supporting evidence, and determine whether prior barangay conciliation is required. See the Supreme Court’s Rules on Expedited Procedures in the First Level Courts and OCA Circular No. 69-2022.

Ordinary civil action

Claims outside small claims, or those seeking resolution of the contract, specific performance, injunction, or substantial damages, may require an ordinary civil case—unless a valid arbitration agreement places the dispute before CIAC.

Court jurisdiction and venue depend on the relief sought, the amount of the claim, the nature of the action, the parties, the property involved, and current jurisdictional statutes and rules. A lawyer should determine the proper forum before filing.

What may be recovered?

Depending on the contract, proof, causation, and chosen remedy, recoverable amounts may include:

Unsupported overpayments;
The reasonable cost of completing the agreed work;
The reasonable cost of correcting defects;
The value of missing or substituted materials;
Contractual liquidated damages, if valid and applicable;
Other actual losses that were adequately proved and legally caused by the breach;
Interest when permitted by the contract and law; and
Attorney’s fees and litigation expenses only when a legal or contractual basis exists and the requirements are met.

Damages are not presumed merely because a breach occurred. Keep receipts and establish the connection between the breach and each claimed expense. Avoid upgrades while corrective work is underway—or separate their cost—because the defaulting contractor should not automatically be charged for improvements beyond the original bargain.

A penalty or liquidated-damages clause may be reduced when it is iniquitous or unconscionable, or when the obligation was partly or irregularly performed. Conversely, demanding an arbitrary penalty not found in the contract or law can weaken an otherwise valid claim.

Important time limits

Do not wait for the project relationship to deteriorate further. Prescription depends on the legal basis of the action and when the right to sue accrued.

Under the Civil Code, an action based on a written contract generally must be brought within 10 years from accrual, while an action based on an oral contract generally must be brought within 6 years. Other causes of action may have different and shorter periods. Article 1723 also contains special rules for collapse caused by specified building defects.

A written extrajudicial demand may interrupt prescription for certain civil actions under Article 1155, but it is unsafe to assume that correspondence has preserved every claim. Arbitration clauses and contracts may also prescribe notice, claim, warranty, or dispute deadlines that must be followed even sooner. Ask a lawyer to calculate the applicable dates from the actual documents and events.

Common mistakes to avoid

Paying additional charges without an itemized billing and approved written change order;
Treating every verbal site instruction as authorization for any price the contractor later chooses;
Signing a completion certificate, waiver, or quitclaim while defects remain;
Removing or covering defective work before documenting and inspecting it;
Hiring a replacement without first following the contractual notice and cure process;
Withholding all payments even though part of the billing is clearly due;
Confusing a PCAB disciplinary complaint with a claim for compensation;
Filing in court despite a binding CIAC arbitration clause;
Skipping mandatory barangay conciliation;
Charging the original contractor for upgrades rather than reasonable completion or correction costs;
Relying exclusively on chats when signed plans, measurements, receipts, and expert findings are available;
Posting unverified accusations online instead of preserving evidence and using formal remedies; or
Assuming that noncompletion is automatically estafa.

Ordinary breach of contract is generally a civil matter. Fraud may create separate consequences only when its legal elements and supporting facts are present. Do not use a criminal complaint merely as leverage to collect a disputed civil debt.

When legal or technical help is urgent

Consult an independent engineer and a Philippine construction lawyer promptly when:

The building may be structurally unsafe;
Someone has been injured or neighboring property is at risk;
The contractor has abandoned a high-value project;
A large advance appears unsupported by completed work or delivered materials;
The contractor threatens to remove installed materials or damage the site;
A performance or surety bond has a notice deadline;
The contractor has served an arbitration demand, court summons, lien-related claim, or formal payment demand;
The contract contains a CIAC arbitration clause;
You are considering termination or takeover;
The limitation period may be near;
Plans or permits appear unauthorized or materially violated; or
The contractor asks you to sign a waiver, settlement, or final acceptance.

For immediate danger, keep people away, contact emergency services as appropriate, and notify the local Office of the Building Official.

FAQ

Can a contractor increase a fixed price because materials became more expensive?

Generally, not merely for that reason when Article 1724 applies to a stipulated-price construction contract. Changes to the agreed plans or specifications must be authorized by the proprietor in writing, and the additional price must be agreed upon in writing by both parties. The exact contract and pricing arrangement still matter.

What if I verbally requested additional work?

A verbal request can create a serious factual dispute, but it does not necessarily satisfy Article 1724’s written requirements for changed plans and additional price. Preserve messages, drawings, quotations, and payment discussions, and obtain legal advice before accepting or rejecting the charge.

Can I stop paying when the contractor stops working?

You may dispute unearned or unsupported billings, but do not assume that every unpaid amount can be withheld. Determine what work was properly completed, what the payment milestones require, and whether the contract permits retention, set-off, suspension, or termination. Give written notice and pay clearly undisputed amounts when appropriate.

Can I terminate the contract immediately?

Only when the contract or law permits it and the breach is sufficiently serious. Many contracts require notice and an opportunity to cure. Wrongful termination can expose the owner to the contractor’s own claim for payment and damages.

Can I hire another contractor and charge the cost to the first one?

Potentially, particularly when defective work must be corrected after the original contractor refuses, but document the condition first, comply with notice requirements, obtain reasonable bids, and distinguish completion or repair costs from upgrades.

Does a PCAB complaint get my money back?

Not necessarily. PCAB regulates contractor licensing and may investigate disciplinary violations. Monetary recovery may require settlement, CIAC arbitration, small claims, or another civil action.

Is small claims available for construction disputes?

It may be available when the claim is solely for payment or reimbursement of money and does not exceed ₱1,000,000, excluding interest and costs. It is generally unsuitable when you principally need an order compelling completion, an injunction, or other non-monetary relief. A CIAC arbitration agreement may also change the proper forum.

What if there is no written construction contract?

Rights may still arise from an oral agreement, accepted quotation, messages, payments, conduct, and the Civil Code, but proving the scope, price, and deadline becomes harder. Oral-contract claims also generally have a shorter prescriptive period than written-contract claims. Assemble all contemporaneous evidence and seek advice early.

Should I report an unlicensed contractor?

Verify the contractor’s status through PCAB first. If the contractor was required to be licensed but was not, ask PCAB or DTI about the current complaint process. Licensing enforcement does not by itself resolve how much money either party owes.

Official legal references

This article provides general Philippine legal information, not legal advice for a particular project or dispute. Contract wording and project records can materially change the result. Sources and procedures were checked as of July 27, 2026.