Key Points and Common Disputes in Hotel MEP Engineering Settlement Audit

Key Points and Common Disputes in Hotel MEP Engineering Settlement Audit

I am Tony Zhao, a mechanical and electrical engineering cost expert. Hotel MEP settlement review is the final gate for project cost control and directly affects investment returns and the fairness of contract performance. Because hotel MEP systems (such as HVAC, plumbing and drainage, electrical, fire protection, and intelligent systems) involve many disciplines, complex equipment and materials, and frequent changes, settlement reviews often lead to disputes over differences in quantity calculation rules, insufficient basis for comprehensive unit price adjustments, and disputes over the authenticity of site instructions. The following, combined with GB50500 "Code of Bills of Quantities and Valuation for Construction Works" and practical engineering experience, analyzes key review points and common disputes.

I. Core Points of Settlement Review

• Standard Reference: Article 8.2.1 of GB50500-2013 requires that "quantities shall be calculated according to the measurement rules agreed in the contract and shall be consistent with the actual completion status."
• Practical Focus: Check the consistency between drawings and actual construction. For example, the number of fan coil units, air handling units, water pumps, and other equipment must be counted unit by unit, and pipeline lengths must be combined with as-built drawings and on-site measurements. I once handled a five-star hotel project where the contractor overreported the air duct area by 15%. During on-site verification, it was found that some flexible connection sections that had not been constructed were included, and approximately RMB 800,000 was ultimately deducted.
• Common Disputes: After pipeline routing changes, the original design drawings do not match the as-built drawings, resulting in disagreements between the parties on length calculation. The contractor should be required to provide change records confirmed by the supervisor.

• Standard Reference: Article 9.3.2 of GB50500-2013 stipulates that when the quantity deviation exceeds 15%, the unit price may be adjusted; Article 9.4.1 clarifies that unit price adjustments caused by changes must refer to the contract agreement or market price.
• Practical Focus: In hotel MEP works, procurement prices of equipment (such as chillers and boilers) fluctuate greatly. If the contract stipulates a "lump-sum unit price," it is necessary to review whether it includes transportation and miscellaneous fees and installation fees. I once encountered an elevator subcontractor requesting a price adjustment on the grounds of "market price increases," but the contract clearly stipulated a "fixed unit price," and ultimately no adjustment was made in accordance with Article 9.3.1.
• Common Disputes: After changes, new processes (such as intelligent lighting systems) have no corresponding bill items, and the parties dispute the pricing method (such as proportions of labor, materials, and management fees). It is recommended to refer to local information prices or market inquiries and keep inquiry records.

• Standard Reference: Article 10.1.1 of GB50500-2013 requires that measure fees be calculated according to actual occurrence or contract agreement.
• Practical Focus: During hotel construction, costs such as temporary water and electricity and finished product protection are prone to false reporting. For example, in one project, the contractor calculated the "night construction fee" for the full construction period, but overtime was actually worked for only 20 days, so a deduction was required.
• Common Disputes: Site instruction sheets lack supervisor signatures or have vague descriptions (such as "coordinate with decoration and adjust pipelines" without specifying the scope). Image materials and material entry records should be required as supporting evidence.

II. Common Disputes and Response Strategies

• Case: A hotel air-conditioning system used imported-brand chillers, and the contract stipulated a "provisional sum." At settlement, the contractor's quotation was 20% higher than the market price. During the review, we verified the actual procurement price through customs declarations and manufacturer authorization letters, referred to the average industry price for the same period, and finally settled at 5% below the market price.
• Strategy: Require the procurement contract, invoices, and payment vouchers; for imported equipment, check exchange rate fluctuation clauses.

• Case: The burial depth of basement drainage pipes was not marked on the as-built drawings, and the contractor calculated quantities based on the maximum depth. During the review, we retrieved on-site photos and concealed work acceptance records, found that the actual depth was less than shown on the drawings, and deducted RMB 100,000.
• Strategy: Emphasize that concealed works must have image materials and supervisor-signed records; otherwise, quantities shall be calculated based on the lower limit in the design drawings.

• Case: For a change to a hotel intelligent system, the contractor did not supplement the signature until half a year after completion, and the owner refused on the grounds of "failure to confirm in a timely manner." According to Article 9.1.1 of GB50500-2013, changes must be confirmed in writing before implementation, and the site instruction was ultimately excluded.
• Strategy: Specify the timeliness of site instructions in the contract (such as within 7 days); overdue instructions shall be deemed abandoned.

III. Summary and Recommendations