Track what your home really costs.
Log every mortgage payment, utility bill and repair in seconds, then see how you compare to other homes - anonymously.
11
Houses tracked
129
Costs logged
PLN 32,535.18
Logged in total
Housing, water, electricity, gas, and other fuels made up 19.4% of the average Polish household's spending in 2025 – about 391 zł per person per month – and that category rose faster than overall inflation.
Where it all goes
Aggregated across every house on the platform, anonymized.
- HeatingPLN 7,795.32
- GasPLN 7,639.14
- ElectricityPLN 6,432.45
- InsurancePLN 5,729.48
- Internet & CablePLN 1,479.00
- WaterPLN 1,319.64
- Property TaxPLN 1,101.00
- GarbagePLN 525.00
- SewagePLN 295.00
- OtherPLN 219.15
Costs over time
Last 12 months, across every house on the platform.
“I think my bills are high” shouldn’t be a guess — it should be a number you can check. That’s why we built DomKos.
Your dashboard, at a glance.
Every cost you log becomes a chart automatically. Here's six months of a real house's spending, shown with example data.
Kowalski House
Here's what your home has cost you.
This month
PLN 2,990.00
3% vs last month
Average · Last 6 months
PLN 3,032.50
Community avg (this month)
PLN 3,210.00
7% below average
Costs over time
Last 6 months
By category
This month
- Mortgage / RentPLN 2,400.00
- ElectricityPLN 265.00
- WaterPLN 140.00
- GasPLN 60.00
- InsurancePLN 45.00
- Maintenance & RepairsPLN 80.00
You vs. similar houses
Anonymized average across houses of 96–144 m² with Gas heating.
You vs. other houses
Anonymized average across everyone using DomKos.
Add a cost
Amount, date, category - logged in 5 seconds.
Recent costs
Gas
Aug 20 · Quarterly
PLN 780.00
Electricity
Aug 15
PLN 265.00
Mortgage / Rent
Aug 05
PLN 2,400.00
Maintenance & Repairs
Aug 02 · Boiler repair
PLN 80.00
Never miss a bill — and know what's coming
Plan every recurring cost, installment plan and one-off payment, then see exactly how much you'll need in the months ahead.
Schedule any payment
One-off, a fixed number of installments (“raty”), or a recurring charge on a set day each month, quarter or year. Bills that change month to month? Mark them as variable and enter the real amount when you pay.
A calendar you can read at a glance
Every due date on a colour-coded calendar: green paid, amber due soon, red overdue, yellow scheduled. Mark a payment paid, partly paid, or skipped in one click.
A reminder where you'll see it
A badge appears on your profile the moment something is overdue or due within a week — across every house you belong to.
See the money you'll need next
The cost forecast adds up everything still unpaid, month by month, so you know what to set aside for the next 6 or 12 months — or any range you pick.
- KJ22 payments need attention
Payment calendar
Oct 26
Cost forecast
More than a spreadsheet.
The features that make tracking a shared home actually work.
Describe your house once
Area, heating, solar & battery, hot water, tariff, water & sewage — fill in as much as you like, whenever you like.
Living area (m²)
120 m²
Heating source
Gas
Manage it together
Invite your partner or housemates by email. Everyone can log costs — only the owner controls access.
- KJKrystianOwner · you
- AJAgnieszkaMember
Own more than one house?
Switch between them instantly, or see every property combined in one view.
- Kowalski HousePLN 2,990.00
- Dom nad morzemPLN 1,240.00
- Mieszkanie w mieściePLN 890.00
What it's like day to day
Illustrative examples of how DomKos gets used - not real customer reviews.
“Logging a cost takes less time than making coffee - and I finally see what my house actually costs over a year, not just this month.”
“The similar-houses comparison was the useful part - turns out I was paying way more for heating than others with the same setup.”
“We split a house with my partner. We both log costs, and closing out the month takes about thirty seconds now.”
Log costs in seconds
Amount, date, category - done. No spreadsheets, no friction.
See where it goes
Automatic charts break your spending down by category and month.
Compare, anonymously
See how your home stacks up against others. No one ever sees your data.
Common questions
Everything you'd want to know before logging your first cost.
Is DomKos free?
Yes. DomKos is free to use, with no pricing tiers and no credit card required.
Can other people see my costs?
No. Your own house's costs are private to you and the members you've invited. Every comparison shown to you is an anonymized aggregate across other houses - no individual house's data is ever exposed to another user.
What currency does DomKos use?
Always PLN (zł), regardless of whether the interface is in Polish or English - DomKos is built for the Polish market.
What if I own more than one house?
You can add as many houses as you need and switch between them instantly, or view every property combined in one “All houses” dashboard.
How does DomKos handle bills that aren't paid every month?
Quarterly or yearly bills (like electricity or insurance) are spread evenly across the months they cover, so your monthly trends and comparisons stay meaningful no matter how often a bill actually arrives.
Can I plan future payments and see how much I'll need?
Yes. Schedule recurring bills, installment plans and one-off payments, track each due date on a colour-coded calendar, and get a reminder on your profile when something is overdue or due soon. The cost forecast then shows how much money you'll need over the next 6 or 12 months.
How do I sign up?
With Google sign-in - there's no separate password to create. Your first house is set up automatically the moment you sign in.