Renovation of your home in Kalundborg.
Kalundborg Municipality lies on the North-West Zealand coast with a direct ferry connection to Samsø and Jutland. The municipality is home to Kalundborg Symbiosis — one of the world's best-known industrial symbiosis projects, where Novo Nordisk, Equinor and other companies exchange resources. This gives the municipality a strong industrial backbone and a population with many skilled tradespeople.
Kalundborg in brief — context for your renovation.
foundationIndustrial municipality with a strong economy
Kalundborg hosts Novo Nordisk's largest production facility, Equinor's refinery and a range of major industrial companies. This creates local jobs and a stable demand for housing — but property prices are moderate compared to Zealand's east coast.
homeDetached houses dominate
59% of homes are detached houses. With 7.3% vacancy, it is a more balanced market than North Jutland, but still noticeably below Greater Copenhagen. Good opportunities to buy spacious homes at sensible prices.
local_fire_departmentDenmark's largest heat pump
Kalundborg Forsyning (kalfor.dk) supplies district heating to 5,150 customers in Kalundborg city. The heat comes from the Asnæs power station and a large heat pump — one of the largest in Denmark. The municipality is actively working on green heat supply.
Your housing type.
Detached house from 1960–1990
59% of homes in Kalundborg — approx. 15,100 dwellings (source: Statistics Denmark 2025)
The typical home in Kalundborg is a brick villa from the 1960s–80s. Many are connected to Kalundborg Forsyning's district heating. Prices are moderate for Zealand — 10–15% below Roskilde and Holbæk levels — which makes the renovation economics favourable.
What's typical?
- — Brick exterior walls
- — Pitched roof with concrete tiles
- — District heating (town) or oil boiler/heat pump (hinterland)
- — Garden of 600–1,000 m²
- — Carport or garage
Common weaknesses
- — Insufficient insulation in houses from the 1960s–70s
- — Worn roof covering
- — Outdated bathroom
- — Oil boiler in villages should be replaced
Typical costs
Do you need an architect?
Probably not necessary for:
- — Roof replacement using the same material
- — Interior renovation
- — Extension under 50 m²
Architect recommended or required for:
- — Extension over 50 m²
- — Façade alterations
- — Energy renovation projects
Terraced house from 1970–1990
18% of homes in Kalundborg — approx. 4,560 dwellings (source: Statistics Denmark 2025)
Terraced houses mainly in Kalundborg city and surroundings. Good standard but with energy improvement potential. Many connected to district heating.
What's typical?
- — Brick terraced houses in one to one-and-a-half storeys
- — Pitched roof
- — District heating
Common weaknesses
- — Insufficient insulation
- — Ageing windows
Typical costs
Loft and wall insulation
80,000–200,000 kr
Including vapour barrier and new surface. Zealand pricing. . Source: Bolius
Do you need an architect?
Probably not necessary for:
- — Interior renovation
Architect recommended or required for:
- — Extensions and façade alterations
Apartment building from 1950–1980
18% of homes in Kalundborg — approx. 4,540 dwellings (source: Statistics Denmark 2025)
Apartment buildings mainly in Kalundborg city. Some social housing. Connected to Kalundborg Forsyning's district heating network.
What's typical?
- — 3–5 storeys in brick
- — District heating
- — Shared installations
Common weaknesses
- — Outdated plumbing and downpipes
- — Insufficient insulation
- — Flat roofs
Typical costs
Façade renovation with insulation
1,400–2,600 kr/m²
Including new surface finish. Zealand pricing. . Source: Bolius
Do you need an architect?
Probably not necessary for:
- — Interior apartment renovation
Architect recommended or required for:
- — Façade renovations
- — Roof renovations
Local conditions in Kalundborg.
local_fire_department District heating — Kalundborg Forsyning
Kalundborg Forsyning (kalfor.dk) supplies district heating to 5,150 customers in Kalundborg city. The heat comes from the Asnæs power station and one of Denmark's largest heat pumps. In the municipality's hinterland, oil boilers and heat pumps are common.
account_balance Heritage value
Kalundborg city has a heritage-listed medieval town centre with the unique five-towered Our Lady's Church. Homes in the historic town centre may have restrictions on façade changes. Always check with the municipality before major external changes.
Look up your address at the Danish Heritage Agency's FBB register
assignment Building permit in Kalundborg
Apply for a building permit via Byg & Miljø. Interior alterations to a single-family home normally do not require a building permit. Façade changes in heritage areas require municipal approval.
savings Grants for energy renovation
Subsidies for energy renovation are available via Sparenergi.dk. Kalundborg Forsyning provides information on district heating connection.
Kalundborg in figures.
Data from Statistics Denmark (2025) and the Danish Heritage Agency — context for your property.
Dwellings total
7.3% vacancy rate
Listed buildings
Source: Danish Heritage Agency FBB
Social housing units
Source: Landsbyggefonden
CO₂ emissions by sector
Energy
582,360 tonnes CO₂
Transport
69,517 tonnes CO₂
Chemical processes
9,546 tonnes CO₂
Agriculture and land use
67,548 tonnes CO₂
Waste disposal and biogas
22,174 tonnes CO₂
Wastewater
1,042 tonnes CO₂
Frequently asked questions
about renovation in Kalundborg.
Novo Nordisk's and Equinor's large production facilities create stable jobs and a steady demand for housing. Prices are moderate for Zealand — 10–15% below Holbæk and Roskilde — but renovation investments pay off in a stable market.
Yes, Kalundborg Forsyning (kalfor.dk) supplies district heating to 5,150 customers in Kalundborg city. The heat is produced at the Asnæs power station and a large heat pump. Check kalfor.dk for connection.
Yes, interior alterations to a single-family home normally do not require a building permit. You must comply with the building regulations. Façade changes require a permit — particularly in the historic town centre.
Kalundborg city with Our Lady's Church and its medieval town centre has heritage value. Façade changes, window replacement and balconies may require municipal approval. Contact Kalundborg Municipality before starting.
Approximately 10–15% lower than Greater Copenhagen. Good availability and shorter waiting times. This gives better renovation economics than in the Copenhagen area.
Next steps.
District heating from Kalundborg Forsyning
Green district heating from the Asnæs power station and one of Denmark's large heat pumps.
assignmentBuilding permit in Kalundborg
What can you do without a permit, and what requires approval?
buildComprehensive renovation of a detached house
Plan your renovation properly in Kalundborg's stable housing market.
Tell us about your project in Kalundborg.
We help homeowners in Kalundborg prioritise renovation and get started — from the first assessment to completed project.
Start your dream here