Construction Materials Supply Contract Colombia (Contrato de Suministro de Materiales)

The Construction Materials Supply Contract in Colombia is the agreement by which a supplier (suministrador) undertakes to deliver construction materials periodically or continuously to a contractor (constructor or construction company) in exchange for payment of an agreed price, pursuant to the established construction schedule. This contract is primarily governed by Articles 968 to 980 of the Colombian Código de Comercio, which define the supply contract as one in which one party undertakes to exchange periodic deliveries of goods or services to the other in exchange for a price.

The technical framework for construction materials supply in Colombia is determined by the NSR-10 (Reglamento Colombiano de Construcción Sismo Resistente), adopted through Decreto 926 de 2010, which establishes minimum technical specifications for structural materials such as concrete, reinforcing steel, structural masonry, and structural wood. Materials not meeting NSR-10 specifications cannot be used in works subject to a construction license, under Ley 400 de 1997 and Decreto 1077 de 2015 (Decreto Único Reglamentario del Sector Vivienda, Ciudad y Territorio). The supply contract must make explicit reference to the applicable Colombian Technical Standards (NTC) for each type of material.

Resolución 0549 de 2015 of the Ministerio de Vivienda established the Guide for Water and Energy Savings in Buildings, incorporating sustainable construction requirements that affect specifications for materials such as thermal insulation, low-emittance glass, low-consumption fittings, and sustainability-certified materials. For public sector works, Ley 80 de 1993 (Estatuto General de la Contratación Pública) and Decreto 1082 de 2015 establish additional supply requirements for state entities, including the obligation for materials to meet INVIAS (Instituto Nacional de Vías) technical data sheets or Agencia Nacional de Infraestructura (ANI) specifications depending on the type of work.

The forms-legal.com Construction Materials Supply Contract allows Colombian builders, real estate developers, and contractors to formally document their agreements with materials suppliers, establish delivery schedules tied to construction progress, fix technical quality standards, regulate price adjustments for variation in the DANE construction cost index (ICC), and establish contractual remedies for non-conforming materials, late deliveries, or supplier non-compliance.

The Construction Materials Supply Contract in Colombia is necessary in all construction projects where materials are supplied periodically or in phases over the execution period, rather than in a single purchase. The most common scenarios include: supply contracts for ready-mixed concrete (pumped or shot concrete) for projects of three or more floors where volume and scheduling require deliveries coordinated with foundation and structural work; supply of reinforcing steel for structural projects with phased delivery according to each floor or structural element; supply of masonry, finishing materials, and installations for medium and large residential projects; and supply of road and urbanization materials (asphalt, curbs, paving stones, signage) for urbanization and road infrastructure projects.

The contract is also essential when the builder or developer wants protection against materials price variations over the course of a long construction project (more than six months) through price adjustment clauses indexed to the DANE ICCV or Banco de la República IPP. Without a supply contract, the supplier can unilaterally modify prices with each delivery, generating financial imbalances in the project budget. For public sector projects registered in SECOP under Ley 80 de 1993, the written supply contract is mandatory.

The Construction Materials Supply Contract in Colombia must include the following elements to be legally valid and technically complete under the Código de Comercio and the NSR-10:

**Identification of parties.** Name or company name of the supplier and contractor, NIT or ID, domicile, legal representative (if legal entities), and valid Cámara de Comercio registration. For the supplier, indicate the supplier registration number with the Cámara de Comercio and, if applicable, ISO 9001 quality certifications for the materials production process.

**Contract object and technical specifications.** Detailed list of materials to be supplied with complete technical specifications: for concrete, compressive strength f'c in MPa or kg/cm², water-cement ratio, maximum aggregate size, cement type (Portland Type I, II, or III per NSR-10 Section C.3); for reinforcing steel, grade (420 or 520 MPa), ASTM A615 or NTC 2289 standard, diameters (No. 3 to No. 9); for masonry, minimum compressive strength of masonry units per NSR-10 Section D.3. Each material must reference the applicable Colombian Technical Standard (NTC).

**Delivery schedule.** Specific dates or maximum terms for each delivery, linked to the construction schedule. The schedule must indicate the minimum and maximum quantity per delivery, advance notice required for additional deliveries (minimum 48-72 hours for ready-mixed concrete), and conditions for schedule modification due to force majeure or construction delays.

**Price and payment method.** Unit price of each material in Colombian pesos (COP) with VAT broken out, payment method (30/60/90-day credit or advance payment), and price adjustment mechanism. Price adjustment may be indexed to the DANE Vivienda Construction Cost Index (ICCV) or the Banco de la República Producer Price Index (IPP), with a specific adjustment formula applicable from the fourth or sixth month of contract execution.

**Quality control and materials acceptance.** Procedure for receiving and verifying materials at the construction site: required laboratory tests (concrete cylinders, steel tensile tests, masonry absorption), supplier quality certificates per shipment, and protocol for rejecting non-conforming materials. Rejected materials must be removed from the site within 24 hours of non-conformity notification, at no cost to the contractor.

**Transport and risk.** Definition of applicable Incoterm: if the price includes transport and unloading at the site (CIP or DAP equivalent), risk transfers to the contractor at the delivery site; if the price is ex-plant (EXW equivalent), the contractor assumes transport and risk from the supplier's plant. The supplier must ensure transport complies with Ministerio de Transporte regulations (Decreto 1609 de 2002 for hazardous materials if applicable).

**Supplier warranties.** Quality warranty for materials during the construction period and during the work stability warranty period (ten years for structure under Decreto 1077 de 2015). If defects appear in the work attributable to supplied materials not meeting specifications, the supplier bears joint liability for damages under Article 978 of the Código de Comercio. For public contracts under Ley 80 de 1993, the unique performance guarantee must cover supply, stability, and hidden defects. forms-legal.com provides this Construction Materials Supply Contract template for Colombian construction projects requiring formal supply arrangements under the Código de Comercio Arts. 968-980 and NSR-10.