There he opened a pub that became popular among the merchants arriving in the capital, some of them settling and organizing a village, whose centre of the time is now located west of the road between Sofia and Lom.

Historically, an early reference to the locality (as КостаЪ БРОДЪ) can be found in Tsar Ivan Alexander of Bulgaria's Oryahov Charter of 1 December 1348.

The economy of Kostinbrod was largely based on poultry farming and stock breeding during the Communist period, but a number of factories, including a 120,000 m2 Coca-Cola one, have emerged in democratic times due to the town's favourable position and the liberal zoning policy of the municipality.

Important periods: Residence Skretiska (4th–5th century AD), Unfortified village, Early Byzantine fortified settlement Kratiskara.

Violeta Bozhilova paleoornithologist Prof. Zlatozar Boev has found a well-preserved skull of a Great white pelican Pelecanus onocrotalus.

A round plan (diameter 32 m), tentatively called "Rotunda" (Bozhilova / Vitski, 1985), probably with memorial or cult functions, located 100 m south of the residence, as well as a necropolis, were also studied.

It probably appeared in the second quarter of the 6th century AD, mentioned in the sources by Procopius of Caesarea as πολιχνιον (town) of ΚΡΑΤΙΣΚΑΡΑ, on the remains of the Roman residence and played the role of a local administrative center.

According to legend, the town of Kostinbrod was founded by a man named Kosta, who long ago settled near the ford across the Belitsa River (now at the entrance to the city from the direction of Sofia).

Even today, starting west from Lomski Pat, deviating at the crossroads "Belitsa" in the direction of the neighborhoods "Shiyakovtsi" and "Maslovo", you have to travel about 4 km on the road, which on both sides has several row of houses.

Over the years, Kostinbrod has been known as the city with the utopian ideas of the Bulgarian Communist Party for great successes in poultry and animal husbandry.