Building contractor in 3917 Porsgrunn
Opportunity score
Worth a closer look
Medium confidenceSome signals point to room for a new business.
See the five reasonsWhy this score (65/100)
The line marks 50, the average. The score compares this area with others of the same type; the gap to peers compares it with areas of similar size. Parts marked – can't be calculated here and are left out; the others count more. How the score is calculated
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Each dot is a place of business at its registered address. Click a dot to see the company.
There are 9 active businesses in the category “Building contractor” in 3917 Porsgrunn - 56.0 per 10,000 residents.
That is about the same as similar-sized areas (median 63.9 per 10,000). With the typical density you would expect about 10.
In the last 3 years 1 opened. Not available yet: closures are only known from 3 October 2026.
The population is 1,608 and has grown 7.8% over 5 years.
Compared with Norway
Building contractor in 3917 Porsgrunn against all of Norway. Annual-report figures are for 2025 (Porsgrunn kommune), from 141 companies. Survival can't be calculated for Norway yet: closed businesses are removed from Enhetsregisteret, so we only know closures from the day we started collecting.
| Porsgrunn | Norway | Porsgrunn Norway | Verdict | |
|---|---|---|---|---|
| Made a loss | 57% | 45% | More here | |
| Companies with negative equity | 22% | 20% | About the same | |
| Losses two years in a row | 39% | 28% | More here | |
| Median equity ratio | 26% | 31% | Weaker | |
| Run by chains (3+ places) | 0% | 1% | About the same |
Trend
Active businesses over time
3917 PorsgrunnThis line starts on 3 October 2026, when closures start being known, and grows as we collect.
Openings and closures per year
Closures are counted from 3 October 2026; years before show openings only.
Money
Financials – Porsgrunn kommune
Only limited companies (AS/ASA) file accounts – sole proprietorships (ENK) don't. Figures for Norway are operating revenue.
Deeper numbers
Survival, trouble signs, competition and people for building contractor in 3917 Porsgrunn.
Trouble signs
Competition
No company runs more than one place of business here, an independent market.
New and established
An established market: many businesses have been here for years.
Moving in and out
A move is a place of business closing and the same company opening one in another area within 90 days. Chains are left out. A business that moves and keeps its place-of-business number isn't counted here yet, so the real number of moves is higher.
Distance to the nearest one
Measured from each parish centre in the municipality.
Existing businesses
9 in all, newest first.
| Name | Address | Since |
|---|---|---|
| · Enkeltpersonforetak | Kollskjeggvegen 8, 3917 Porsgrunn | 2025 |
| · Enkeltpersonforetak | Gråbjørnvegen 24, 3917 Porsgrunn | 2020 |
| · MAGNUS A. SKJELBRED · Enkeltpersonforetak | Brekka 23, 3917 Porsgrunn | 2018 |
| · Aksjeselskap | Gråbjørnvegen 23, 3917 Porsgrunn | 2018 |
| · Enkeltpersonforetak | Vipevegen 31, 3917 Porsgrunn | 2016 |
| · GRUBBE BYGG Jon Kristian Grubbe · Enkeltpersonforetak | Brekka 51, 3917 Porsgrunn | 1993 |
| · Enkeltpersonforetak | Brekka 46, 3917 Porsgrunn | 1987 |
| · Aksjeselskap | Vipevegen 43, 3917 Porsgrunn | 1984 |
| · Aksjeselskap | Vipeveien 51, 3917 Porsgrunn | 1972 |
Nothing matches.
Recently opened
Kollskjeggvegen 8, 3917 Porsgrunn | Oct 2025 |
Recently closed
Gimlevegen 3, 3917 Porsgrunn | Oct 2026 after 4 yrs |
Comparable areas
Same type of area, similar population.
| Area | Residents | Active | Per 10k | Score |
|---|---|---|---|---|
| 9912 Hesseng | 1,608 | 22 | 136.8 | 15 |
| 3733 Skien | 1,609 | 3 | 18.6 | 76 |
| 9060 Lyngseidet | 1,609 | 14 | 87.0 | 43 |
| 1827 Hobøl | 1,605 | 30 | 186.9 | 9 |
| 4843 Arendal | 1,611 | 0 | 0.0 | 77 |
| 3118 Tønsberg | 1,604 | 12 | 74.8 | 53 |
Other areas nearby
Ranked by opportunity score for building contractor.
| Area | Active | Per 10k | Score |
|---|---|---|---|
| 3924 Porsgrunn Postcode | 0 | 0.0 | 84 |
| 3925 Porsgrunn Postcode | 2 | 15.4 | 81 |
| 3913 Porsgrunn Postcode | 0 | 0.0 | 79 |
| 3929 Porsgrunn Postcode | 0 | 0.0 | 69 |
| 3937 Porsgrunn Postcode | 3 | 23.6 | 69 |
| 3942 Porsgrunn Postcode | 6 | 36.4 | 68 |
| 3919 Porsgrunn Postcode | 16 | 54.3 | 62 |
| 3930 Porsgrunn Postcode | 3 | 25.6 | 62 |
Population of Porsgrunn
Statistics NorwayWho lives here
Statistics Norway · 2026The line marks the average for Norway. Highlighted: the age group most relevant for building contractor.
Roughly as many jobs as working residents.
* Figure for the municipality – Statistics Norway does not publish it for smaller areas.
Counts are places of business (sub-units) registered in the Central Coordinating Register (Brønnøysund) with a main industry code in this category. Businesses are placed by their registered address; trades like electricians often work across a wider area – use the radius view. Statistics updated 13.11.2026.