
About
BY Administration was built by property owners
We rent out and manage homes across Copenhagen, long and short term. We are landlords ourselves, and we are part of BY GROUP DK ApS.
See what your home can earn
Free, no obligation. Answer within 24 hours.
Why we started BY Administration
We started BY Administration because we had seen for ourselves how fragmented, opaque and inefficient property management often is. Instead of handing the responsibility to others, we chose to run the whole process ourselves, from administration and operations to financial control and optimisation.
Today we apply the same disciplined approach to every home we manage: clear structures, transparent reporting and decisions based on long-term value rather than quick fixes. Our role is simple: to look after your home, get the most out of it and take the hassle out of running it.
- We are long-term partners, not a short-term supplier.
- Our decisions are based on data, the rules and experience from daily operations.
- You are spared the day-to-day work, because we have systems, reporting and clear accountability.

The people behind it
BY Administration was founded and is run by three partners.
- Mohamed-Nour YousifHead of operations and partner

- Ludvig Boas Pausgaard JensenHead of finance and partner

- Yousif YousifHead of marketing and partner

What we take responsibility for
Four areas we take full responsibility for. From the first viewing to daily operations.
Renting out
We handle the whole process, from the first viewing to a signed lease and move-in. That covers both short-term rental and ordinary rental with a lease to tenants who stay for longer.
About long-term rentalAdvice on rental property
Strategic advice for owners of rental homes, focused on return, risk and long-term value.
About advisoryProperty management
Management of owners’ associations and buildings, covering operations, compliance, budgets and reporting to owners.
About property managementCleaning
Regular cleaning and changeovers by our own team, so the home is ready to the same standard every time. We handle both ongoing cleaning and deep cleaning when tenants move out.
About cleaningPart of BY GROUP DK ApS
We are landlords ourselves. And we have our own people.
Within the group we buy homes to rent out, and when something needs fixing in your home, we have our own tradespeople.
Rentals and operations
Long-term rental, Airbnb management, cleaning and management of owners’ associations in Copenhagen.
Our own homes
Buys and rents out homes itself. We manage them ourselves, just like yours.
Our own tradespeople
Repairs and refurbishment when something needs fixing in your home. A shorter path from problem to fix.
byentreprise.dkBY Entreprise ApS is a secondary name of BY DEVELOPMENT ApS. All three are part of BY GROUP DK ApS, CVR 44184877. bygroup.dk
Your contact
Mohamed-Nour Yousif is your contact at BY Administration. Call, write or book a meeting, and we will take it from there.

What our clients say
- 4.9Google · 28 reviews
- 4.4Trustpilot · 22 reviews
- 4.6Airbnb · 262 reviews
- 7.8/10Booking.com · 122 reviews
Company facts
- Company
- BY Administration ApS
- CVR number
- 45652491
- Phone
- +45 50 52 15 37
- Membership
- Part of Danske Udlejere
Frequently asked questions
Answers to what landlords ask us most.

Have another question?Call +45 50 52 15 37 or book a meeting.
Who is behind BY Administration?
BY Administration ApS, CVR 45652491, which is part of BY GROUP DK ApS. The group also includes BY Apartments ApS, which buys and rents out homes, and BY Entreprise ApS, which carries out repairs and refurbishment. In other words, we are landlords ourselves, and we have our own tradespeople.
Does BY Administration own homes itself?
Yes, through the group. BY Apartments ApS, which like us is part of BY GROUP DK ApS, buys and rents out homes itself. We manage them ourselves, just like yours. So we know the landlord’s side of the table from our own daily work.
Who carries out repairs and maintenance?
Small repairs and larger refurbishments can be handled by BY Entreprise ApS, our sister company in BY GROUP DK ApS. BY Entreprise ApS is a secondary name of BY DEVELOPMENT ApS. So we have our own people when something needs fixing in your home.
Where is BY Administration based?
Our head office is at Brorsonsgade 4, kl., 1624 København V. From there we rent out and manage homes across Copenhagen, from Indre By, Christianshavn and Vesterbro to Østerbro, Nørrebro, Frederiksberg, Valby, Nordhavn and Amager.
See on Google MapsWhere can I read reviews of BY Administration?
On Google, where we have 4.9 out of 5 from 28 reviews, and on Trustpilot. You can read a selection of the Google reviews on this page and all reviews on Google and Trustpilot.
Read the reviews on TrustpilotHow do I contact BY Administration?
Call +45 50 52 15 37, email team@byadministration.dk or book a short introductory meeting in our calendar. You can also message us on WhatsApp at the same number. Your contact is Mohamed-Nour Yousif, and all our contact details are on the contact page.
See all contact details