A house to live in or a guest house: how the layout really differs

The most common sentence we hear before design work starts is «we will build it for ourselves, and maybe rent it out later». The trouble is that «later» does not work here. A guest house layout and a family house layout diverge not in the finishes or the furniture but in a handful of decisions taken before the slab is poured — decisions that later cost as much as a separate renovation. Below is where that line actually runs, what Ukrainian law says about it, and how to keep both options open if you have not decided yet.

What actually separates the two houses — and why it is not the interior

The difference between a house to live in and a house for guests is measured by one test: can you change it once the shell is standing. Furniture, textiles, colours, even kitchen fronts move at any time and cost almost nothing at the scale of a building. Water and drainage risers, the stair position, the number of wet zones, the septic capacity and the contracted electrical load are fixed at the same moment as the floor slabs.

So «for ourselves or for guests» is not a conversation about style. It is a list of seven or eight items, each of which has to be closed before concrete is ordered. How the mountains add slope and house siting to that same list is covered separately in how much land you actually need for a mountain house.

Where the law draws the line between a house and a hotel

The line is a number, and the number is six. Article 1 of the Law of Ukraine on Tourism defines a hotel as a temporary accommodation facility «consisting of six or more rooms, in which hotel services are provided by a business entity». The building norms say the same thing in their own language: the scope of DBN V.2.2-20:2008 «Buildings and structures. Hotels» covers «all types of hotel (motel) buildings with a capacity of six rooms or more».

The practical consequence is straightforward. Below six rooms you are designing a residential building under DBN V.2.2-15:2019 «Residential buildings. Basic provisions», with the ordinary rules for detached housing. From six rooms upward it is a different building type with its own norms, and «a large private house we will rent out» stops being an accurate description of what you are building.

The same Article 1 adds a condition that is easy to skip: in a hotel, hotel services are provided by a business entity. Article 5 of the Law separately lists, among the participants in tourism relations, «individuals who are not business entities and who provide accommodation, catering and similar services» — so the law recognises that category and does not fold it into hotels.

The service you plan to sell already describes your building

The second line runs not through the room count but through the level of service — and it too is fixed in a state document. Ukraine's classification of economic activities separates two neighbouring classes, and the difference between them lands directly on the floor plan.

Read that in one direction only: first decide what you are selling, then draw the plan. If your offer includes daily cleaning, fresh linen and breakfast, the building needs a service side that a family home simply does not have — and, crucially, there is nowhere to add it to a finished shell, because it is not decor but square metres with water, drainage, ventilation and a door of their own.

The terminology is worth reading closely too. DSTU 4527:2006, which is in force, defines a cottage in clause 6.8 as «an out-of-town accommodation facility of one or more rooms for the temporary residence of one or several families or persons, with separate entrances for each of them». Separate entrances are not a premium extra: they sit inside the definition itself. Clause 5.8 of the same standard describes a guest house as «an accommodation facility similar to a hotel, with furnished rooms and minimal amenities», and clause 7.2 defines an apartment as a unit of two or more living rooms, a kitchenette, one full and one additional bathroom.

Seven layout decisions that diverge at sketch stage

1. 1How many bathroomsA family home has one or two and the household shares them without thinking. Guests do not share: a group that arrived as two separate parties wants a bathroom next to its own bedroom. Every extra bathroom means a riser through every level, more drainage, a larger septic unit and a larger hot-water reserve. That number is fixed before the floor slabs, not after.
2. 2Equal bedrooms, or a master plus children's roomsA family home is built around one large bedroom. A guest house works better when the rooms are of equal value: the worst room sets the floor price, because it is the one that stays empty first and the one you end up discounting. A plan of «master plus a box room under the stairs» turns one floor into two different products.
3. 3One kitchen or twoIn a family home the kitchen is the centre of the house. In a guest house it is used for tea, breakfast and supper after a day in the hills, and rarely for serious cooking. But the moment you start feeding guests yourself, you need a second preparation area that no guest walks through — and it belongs on the plan, not in a cupboard.
4. 4Laundry and linen — the most forgotten roomA house sleeping eight changes eight sets of bed linen, plus towels and kitchen textiles, on every changeover day. That is not a hallway cupboard: it is a room with water, drainage, sockets for two machines, ventilation and somewhere to dry. A family home never has that task, so an off-the-shelf design never has that room.
5. 5Stairs, doors and soundA family knows one another's habits; guests do not. Do not put a bathroom above a bedroom, do not gather every bedroom door into one node by the stairs, and do not land the stairs in the space where people sit in the evening. Permissible indoor noise levels and the measures that achieve them are set by DBN V.1.1-31:2013 — a question for the designer, not for a rug.
6. 6Boot room and drying roomIn the mountains a guest arrives wet: boots, skis, jackets, snow in winter. A family home manages with a hallway because there are two sets of wet clothing. A guest house needs a separate heated room with extraction, or the damp and the smell reach the whole house — and every second review.
7. 7Your own zoneIf you live on site you need a door that closes: a separate entrance, your own bathroom, acoustic separation from the guest side. Without it you are not renting out a house every day, you are renting out your own life — and that is the single most common reason owners abandon short-term letting in the second season.

Services: where a guest house fails first

A guest house does not fail in the walls. It fails in the services, and always at the same moment — when every guest is in the house at once.

• Hot water. A family showers in turn across an evening. A group coming back from the hills returns together and showers within one hour. What you size for is simultaneity, not headcount: how many outlets run in the peak hour and how many litres that hour needs. Requirements for internal water supply and drainage are set by DBN V.2.5-64:2012.
• Drainage and septic capacity. Size local treatment for peak occupancy, not for the annual average. Then think about the regime separately: five months nearly empty and a full house at New Year are two different operating conditions for a biological treatment unit, and it is worth asking the supplier about that directly.
• Electricity. A standard connection is up to 50 kW inclusive and within 300 metres in a straight line from the distribution system operator's network; technical conditions are issued within 10 working days, or 20 working days where agreement with the transmission system operator is required. Anything beyond that is a non-standard connection, with a different price and a different timescale.
• Heating. A family home is heated steadily and continuously. A guest house stands empty for weeks and then has to reach a comfortable temperature within a few hours of arrival. That means zoning, frost protection and remote control. How to cost the running side without mains gas is covered in heating a house without gas: wood, pellets, heat pump.

How to keep both options open

If you have not decided, the brief is not «build it for guests» but «build it guest-ready»: put in what is expensive to change and skip what is cheap to add.

1. Place a riser where a second bathroom might one day go, and run a capped drainage branch to it — even if today that space is a store cupboard.
2. Size the septic unit and the consumer unit for the higher scenario rather than for today's household. It is the cheapest reserve available to you.
3. Plan one room with water and ventilation that is a study today and a laundry tomorrow. That single room removes half of the future rework.
4. Build the second entrance into the shell — even if for now it opens into your own boot room rather than outside.
5. Put a bedroom with its own bathroom on the ground floor. It works for guests with children, for older parents, and for you thirty years from now.
6. Fix the bathroom count before the floor slabs are calculated, not after the elevations are agreed.

When it is more honest to admit these are two buildings

There is a point past which the compromise stops being a compromise. If you are planning six or more rooms with daily cleaning, fresh linen and breakfasts, you are not designing a house but a hotel: a different building type, different norms, a different logic of spaces. Trying to fold that into «a large private house» produces a building that performs badly in both roles — too big and too impersonal for a family, and without a service side for guests.

In practice a different answer works more often: a house to live in plus a separate guest building on the same plot. Two smaller buildings almost always beat one large one with a partition down the middle — you keep your privacy, and the guest gets the separate entrance that the standard already treats as the defining feature of a cottage. The price of that solution is plot area and a second set of service connections, which is why the two-building question belongs at the stage of choosing the land, not at the design stage.

One last thing. If you are viewing finished houses and cottages, run the same checklist against the seller's property: how many bathrooms and where the risers sit, whether there is space for a laundry, whether there is a second entrance, what the contracted load is. A house built «for ourselves» is marketed as «ready to let» far more often than it actually is.