Construction companies in Buenos Aires Province, Argentina

There are 21,967 companies in construction (ISIC F) registered in Buenos Aires Province, Argentina: 21,967 active and 21,509 in the clean B2B universe. Buenos Aires Province ranks 2nd of 24 provinces for the section and holds 28.0% of its national total (data as of 2026-09-18). The sector is over-represented here: section F is 7.1% of all records in Buenos Aires Province against 6.2% nationally, a location quotient of 1.15.

Mar del Plata Sur concentrates 3.5% of the active companies, followed by La Plata Noroeste Calle 50 (660) and Mar del Plata Norte (639); the three together hold 9.4%. The median active company is 14.4 years old; 2% were registered in the last year and 7% in the last three. In the 12 months to June 2026, 479 new construction businesses were registered in Buenos Aires Province, -13.5% on the previous 12 months (national section F: -7.3%). By ISIC division, 41 (construction of buildings) is 66.3% of the records and 43 (specialized construction activities) 20.7%.

One of the largest sections in every registry and the noisiest: developers register a company per project (SPE/SPV), so division 41 overstates the number of operating builders. Division 43 (specialised trades) is where the actual contractors are. Construction-tech, building-materials distributors, equipment rental and fintech lenders use this section with a size or age filter.