My sister’s Instagram friend lives in the UK and he mentioned that, when visiting his brother, rather than staying in the main house, he slums it in the conservatory. Upon hearing this, my sister exclaimed, “Your brother has a CONSERVATORY!?!?” because here in The States, having such a thing makes one sound quite posh. This got me thinking about the different forms of this type of structure, and all the different words for them which vary by region and use.
When one says The Conservatory, it calls to mind visions of a glass room off the side of an old victorian mansion filled with gigantic tropical plans and a fainting couch, but apparently it’s just what we in the States would call a sunroom, or in New England, a three-season porch.
The classic three-season porch is a semi enclosed porch, usually off the back of each floor of a triple-decker apartment building. It’s usually got wood framed, generally uninsulated, solid walls which turn into window frames about halfway up which usually have both screens and glass storm windows. It’s so-named because in New England we have cold winters, so you can usually get about 3 seasons of use out of it. Lots of folks just use these as storage, or a place to hang your laundry to dry. You do sometimes see them on houses, but often these are more widely referred to as screened-in porch, or just screened porch. In Hawaii this is known as a lanai, or in Arizona and other parts of the southwest, the arizona room. There’s also the breezeway, which is a long, generally open-walled but always roofed structure which connects two structures.
Incidentally, the triple-decker is considered to have originated in Massachusetts and hundreds of thousands of them were built in and around New England between 1870 and 1920, particularly in rapidly industrializing areas where lots of people were working in mills and factories and needed housing.

We also have something called a sunroom, which more closely resembles the classic idea of a conservatory or solarium in that it generally has large windows or a wall of windows, and often has a tiled floor. In the UK in order for a structure to be designated a conservatory it has to have “at least 50% of its side wall area glazed and at least 75% of its roof glazed with translucent materials, either polycarbonate sheeting or glass1.” The custom of conservatories dates back to Roman times when folks would bring their tender citrus plants inside during cold spells and place them into rooms called limonaia. In northern Europe, they were known as orangeries, and from there evolved into conservatories, so named because of their practical use for conserving plant life which would otherwise perish in the cold. Many of the beautiful, large and ornate Victorian era conservatories still exist in Europe and across the US as well. Some classic examples include the Conservatory of Flowers in San Francisco, CA and the Glasgow Botanical Garden in Scotland.

The habit of having a simple conservatory on one’s house came into fashion in the 1950s after more advanced glazing techniques were invented.
Weirdly, I actually have had a lot of conversations about what the actual definition of a porch is, vs a balcony or veranda. In our old apartment, which was a triple-decker, we had a back porch (which I miss very much), but it was on the second floor, and I’m not quite sure that counts as a porch or a balcony. It wasn’t screened in and had no windows. It wasn’t technically a veranda because those are always placed on the ground floor. I always went with back porch, but never really felt satisfied with the use of the word.
The word porch comes to English from Old French porche which got it from Latin porticus which specifically referred to a covered walk between columns, and itself was formed from an older word porta, meaning “gate, door, entrance.” Porta is likely from the PIE root *per- meaning “to lead or pass over.”
That etymology unfortunately doesn’t help me with my quest to find a better word for the structure that we so enjoyed at our old apartment, but I’m glad to have had the time to research it anyhow.
Got an unusual form of porch, conservatory, or sunroom where you’re from? Share in the comments below.
1 Source: https://en.wikipedia.org/wiki/Conservatory_(greenhouse)




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