Company lists · Data refreshed September 2026

Top 23 Civil engineering consulting firms based in Slovenia

RevenueBase identified 51 civil engineering consulting firms headquartered in Slovenia as of September 2026 and tracks 521 professional contacts across them, including 294 with verified work emails and 6 with mobile numbers. Ljubljana is the largest hub.

This list covers civil engineering consulting firms headquartered in Slovenia, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 23, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 23, 2026 86% judged on-target in blind review
51Companies
521Contacts tracked
294Verified emails
6Mobile numbers
Explore this list → Free signup · no credit card · 500 free credits

The 23 largest civil engineering consulting firms based in Slovenia

Ranked by team size
Top 23 of 51 civil engineering consulting firms based in Slovenia, ranked by team size, largest first. Data refreshed Sep 23, 2026. RevenueBase Smart Search rates how each company's information relates to civil engineering consulting firms: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceLjubljana, SloveniaHQ checked Sep 23, 202651-20090 contacts →

Indirect evidence

“Elea iC is one of the largest interdisciplinary providers of intellectual services in Slovenia.”

Source: RevenueBase Database · checked Sep 23, 2026
2Strong evidenceLjubljana, SloveniaHQ checked Sep 23, 202651-20058 contacts →

Strong evidence

“In IBE we see our mission as providing CONSULTING, DESIGN and ENGINEERING services in the areas of ENERGY, INDUSTRY, INFRASTRUCTURE, PUBLIC and COMMERCIAL SECTOR and ENVIRONMENTAL…”

Source: RevenueBase Database · checked Sep 23, 2026
3Indirect evidenceLjubljana, SloveniaHQ checked Sep 23, 2026201-50057 contacts →

Indirect evidence

“DRI upravljanje investicij, d.”

Source: RevenueBase Database · checked Sep 23, 2026
4Indirect evidenceMaribor, SloveniaHQ checked Sep 23, 202651-20032 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 23, 2026
5Indirect evidenceLjubljana, SloveniaHQ checked Sep 23, 202611-5029 contacts →

Indirect evidence

“SINCE 1953 PNZ is one of the leading project design companies in Slovenia.”

Source: RevenueBase Database · checked Sep 23, 2026
6Strong evidenceMaribor, SloveniaHQ checked Sep 23, 202651-20023 contacts →

Strong evidence

“Excellent in consulting, engineering and construction.”

Source: RevenueBase Database · checked Sep 23, 2026
7Indirect evidenceLjubljana, SloveniaHQ checked Sep 23, 202651-20015 contacts →

Indirect evidence

“Ustvarjanje učinkovitih inženirskih rešitev je naša strast.”

Source: RevenueBase Database · checked Sep 23, 2026
8Indirect evidenceLjubljana, SloveniaHQ checked Sep 23, 202611-5015 contacts →

Indirect evidence

“Smo mlado in hitro rastoče podjetje, ki s svojim znanjem in profesionalnim odnosom opravljamo kakovostne storitve.”

Source: RevenueBase Database · checked Sep 23, 2026
9Strong evidenceKrško, SloveniaHQ checked Sep 23, 202651-20013 contacts →

Strong evidence

“Company for Development, Planning, Consulting and Engineering Savaprojekt is one of the few companies in Slovenia with its own professionals to provide investors with…”

Source: RevenueBase Database · checked Sep 23, 2026
10Indirect evidenceLjubljana, SloveniaHQ checked Sep 23, 202611-508 contacts →

Indirect evidence

“In taking a fully integrated and holistic approach to investigating and evaluating geotechnical, geological and environmental factors influencing ground related risks we are able…”

Source: RevenueBase Database · checked Sep 23, 2026
11Indirect evidenceAjdovščina, SloveniaHQ checked Sep 23, 20261-106 contacts →

Indirect evidence

“We are a company specializing in the planning of complex infrastructure and other projects requiring an intensive multidisciplinary approach.”

Source: RevenueBase Database · checked Sep 23, 2026
12Strong evidenceMaribor, SloveniaHQ checked Sep 23, 202611-505 contacts →

Strong evidence

“Civil engineering company based in Maribor, Slovenia.”

Source: RevenueBase Database · checked Sep 23, 2026
13Strong evidenceLjubljana, SloveniaHQ checked Sep 23, 20261-105 contacts →

Strong evidence

“IEM Engineering and planning Ltd, is one of the oldest engineering, consulting and planning companies in Slovenia.”

Source: RevenueBase Database · checked Sep 23, 2026
14Indirect evidencePoljčane, SloveniaHQ checked Sep 23, 20261-104 contacts →

Indirect evidence

“infrastructure project design”

Source: RevenueBase Database · checked Sep 23, 2026
15Indirect evidenceMaribor, SloveniaHQ checked Sep 23, 20261-104 contacts →

Indirect evidence

“Podjetje se ukvarja z izdelavo projektne dokumentacije, prometnih in okoljskih študij, svetovalnega inženiringa in strokovnega nadzora na področju inženirskih objektov.”

Source: RevenueBase Database · checked Sep 23, 2026
16Indirect evidenceLjubljana, SloveniaHQ checked Sep 23, 20261-104 contacts →

Indirect evidence

“SUPERVISION Transport infrastructure (roads, railways, ports, airports) Communal infrastructure Water and water management infrastructure High-rise buildings (public buildings and…”

Source: RevenueBase Database · checked Sep 23, 2026
17Strong evidenceLjubljana, SloveniaHQ checked Sep 23, 20261-103 contacts →

Strong evidence

“The structural engineering and consulting company Spektral was established with the aim of introducing advanced solutions for structural design and seismic engineering into the…”

Source: RevenueBase Database · checked Sep 23, 2026
18Indirect evidenceŠempeter Pri Gorici, SloveniaHQ checked Sep 23, 20261-103 contacts →

Indirect evidence

“We are a leading construction company specializing in an integrated approach to the design of building structures, building control, geological geomechanical surveys, high-rise…”

Source: RevenueBase Database · checked Sep 23, 2026
19Partial evidenceKranj, SloveniaHQ checked Sep 23, 20261-103 contacts →

Partial evidence

“Studio 20-20 is a design company of architects and engineers that offers consulting, project management and BIM related services.”

Source: RevenueBase Database · checked Sep 23, 2026
20Indirect evidenceLjubljana, SloveniaHQ checked Sep 23, 202611-502 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 23, 2026
21Indirect evidenceŽužemberk, SloveniaHQ checked Sep 23, 202611-502 contacts →

Indirect evidence

“Z več kot 10 leti izkušenj smo zanesljiv partner za gradnjo stanovanjskih in poslovnih objektov, zemeljska dela (izkopi, priprava terena), urejanje okolice, cestno infrastrukturo…”

Source: RevenueBase Database · checked Sep 23, 2026
22Strong evidenceMaribor, SloveniaHQ checked Sep 23, 20261-101 contacts →

Strong evidence

“Engineering, Design, Consulting and Supervision”

Source: RevenueBase Database · checked Sep 23, 2026
23Partial evidenceKranj, SloveniaHQ checked Sep 23, 20261-101 contacts →

Partial evidence

“Our company provides comprehensive services in architecture and engineering, planning and interior design for new facilities, both residential and commercial, as well as…”

Source: RevenueBase Database · checked Sep 23, 2026

Showing 23 of 51 civil engineering consulting firms based in Slovenia

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 294 reachable decision-makers.

Free signup · no credit card

View the full list →

Civil engineering consulting firms based in Slovenia at a glance

As of Sep 23, 2026
56.4%Verified-email coverage
1.2%Mobile-number coverage
10.2Average contacts per company
1-10Median size (employees)
39.2%Largest-city concentration · Ljubljana
Sep 23, 2026Page data refreshed

Companies by employee count

1-10
27
11-50
15
51-200
8
201-500
1

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 25.0d

Company record updated

Median 88.0d

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among civil engineering consulting firms, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies
Companies headquartered in Slovenia whose own description of what they do matches “civil engineering consulting firms”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search
RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names civil engineering consulting firms), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude
Companies whose own description does not clearly place them among civil engineering consulting firms, and records with no verified work email. Companies headquartered outside Slovenia are excluded even when they keep an office there.
Match quality
In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every listed company carries at least one verified work email, 294 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on September 23, 2026. Lists refresh periodically as the graph is re-checked.
Corrections
Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names civil engineering consulting firms, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many civil engineering consulting firms are there based in Slovenia?

RevenueBase identified 51 civil engineering consulting firms headquartered in Slovenia as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Elea IC D.O.O, headquartered in Ljubljana, tops this list with the largest team on record.

Which city has the most civil engineering consulting firms?

Ljubljana leads with 20 headquartered companies, followed by Maribor (9) and Kranj (2).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 294 verified decision-maker contacts tracked across these 51 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 23, 2026.

Ready to reach these companies? Verified emails and direct dials for all 51 civil engineering consulting firms based in Slovenia. Start with a free account, no credit card.

Download this list →

Related lists

About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.