The Second Home That Takes Care of Itself

You know the arrival. It's late on a Friday after a long drive, there's snow in the headlights, and you push open the door to a house that has been sitting at 50 degrees for three weeks. It smells shut up. You turn the heat up and keep your coat on, and it's Saturday afternoon before the place feels like yours again. Meanwhile some part of you is wondering whether the pipes held, whether the caretaker checked the basement, and why the thermostat app stopped reporting on Tuesday.

A second home should feel like a reward. For many owners it ends up as one more thing to worry about.

It doesn't have to be. Most of the problems with a second home come from one fact: it sits empty most of the time. Almost every house is designed as if someone will be living in it every day, adjusting the thermostat, running the fans, opening the windows and noticing when something smells wrong. Take the people away and an ordinary house slowly starts to deteriorate.

What goes wrong in an empty house

• Freezing. Most mountain-home damage starts with a heating failure or a power outage and a pipe in a cold wall.
• Moisture. With no one cooking, showering or airing the place out, humidity builds or condensation forms in the wrong spots. Mold doesn't need your permission.
• Stale air. Closed-up houses collect odors, off-gassing from finishes and, in wildfire country, smoke that crept in during the summer.
• Not knowing. You're 400 miles away and your only information is a thermostat reading.

The usual answer is more equipment: backup heat, a caretaker, a dehumidifier, smart sensors, a standby generator. Those all help, but they treat the symptoms. We would rather design a house that doesn't have the problem in the first place.

How the Utah ski retreat handles it

The Utah Passivehaus Ski Retreat is built to the passive house standard, and for a house its owners visit [a few weeks each season], that standard does something most people don't expect: the house takes care of itself.

It holds its temperature. A passive house has continuous insulation, triple-glazed windows and an airtight envelope tested to [0.XX] air changes per hour at 50 pascals, well under the standard's 0.6 limit. So it loses heat very slowly. With the heat set back while the owners are away, the indoor temperature [drifted only X degrees over X days in January]. If the power goes out, the house cools over days, not hours. That buys a lot of time before a pipe is at risk.

It keeps breathing when no one is home. A balanced ventilation system with heat recovery runs all the time, bringing in filtered fresh air and exhausting stale air while keeping most of the heat. Humidity stays in a safe range and the air stays fresh. When the owners arrive, the house smells like nothing, which is exactly how it should smell.

It tells you how it's doing. We designed in monitoring for [temperature, humidity and water leaks], so the owners can check on the house from home and get an alert before a small problem becomes a big one. Remote monitoring matters much less in a house that rarely needs attention.

It's ready when you are. Because the house starts from a stable temperature and stays that way, it takes only [about X hours] to bring it up to full comfort. Often you can just walk in.

[Owner quote: something about the first arrival, e.g. what they noticed when they opened the door.]

Different climate, same idea

The Caribbean Desert Retreat has almost the opposite problem: intense sun and heat, salt air, and a house that sits closed up for long periods. The approach is the same. Build an envelope that keeps the outdoor climate outdoors, ventilate constantly with controlled, filtered air, and choose materials that can handle the site without constant maintenance. The house stays cool and dry and doesn't deteriorate between visits.

The standard isn't really about cold weather. It's about how steady the house stays inside, whatever is happening outside.

What the owners notice

When we ask second-home owners what changed, they rarely lead with the energy bill. They talk about:

• A shorter caretaker checklist.
• Less worry. 
• Lower operating costs. This is a nice bonus.
• A house that feels the same on the first night as on the last.

Questions to ask before you build a second home

Whether or not you work with us, bring these to your first meeting with any architect:

1. How will the house protect itself when it's empty for a month in winter, or in August?
2. What happens if the power goes out while no one is there?
3. How will fresh air and humidity be managed when the windows stay closed?
4. How long will it take to feel comfortable after I arrive?
5. What will I be able to see from home, and what will I be alerted to?
6. How much will the caretaker need to do, and how often?
7. Has the envelope been tested, and what were the results?

If the answers are mostly about equipment, keep asking. The best systems are the ones you seldom need.

Start with the site

Every second home starts with a place someone loves: a ridge above a ski town, a stretch of desert coast, a lake that holds summer memories. Our job is to design a house that honors that place and looks after itself while you're away.

If you're planning a retreat, whether you have land already or are still looking, we'd be glad to talk it through. Early decisions about orientation, envelope and systems cost the least to get right, and they make the biggest difference in how the house feels on arrival.

Related reading: [Triple Glazed Window Benefits] · [Seasons in Architecture and Construction]