There is a critical difference between parks (usable recreational space) and greenspace (useless filler.) Greenspace is useless in that it is non-place, while parks are places. You can easily tell the difference - people are occupying parks and putting them to use, and a park usually has a name. Even if the park is tiny, someone loves it enough to give it a name (often even containing the word "Park") like "Duane Park."
Greenspace exists as a buffer against the outside world. The public realm of autoburbia is pretty ugly. Most people do not want to see or hear a highway from their building, and so they set it back. Once you set your building back, you need to fill it with something.
Greenspace is unnecessary, because if your street is pleasant, property owners will get the most value by being located up against it. If your street is already beautiful, you do not need to add trees and other fillers to beautify it.
Sometimes greenspace is not necessarily to buffer, but to pretty up a street that is too wide and barren.
If your streets are too wide, too barren, too unpleasant that you feel greenspace is necessary - you have bigger problems to address and you should address those first.
Regarding the use of trees for shade; I am not opposed to street trees, but from my experience walking around places with narrow streets - even in hot places in the middle of summer, I find that the buildings almost always cast enough shadow that the blaring sun does not disturb me. I am not really opposed to street trees in moderation, especially if your street is wide. But, I would try to address the problem (the street width) first.
By now, you might have an impression that I hate nature when I say we should not build greenspace. I don't. I love nature. I am not saying our cities should have less nature, but instead we should incorporate nature into our cities right - in the form of parks.
Wilderness is also not greenspace. Farmland is not greenspace.
I love wilderness and nature. I think we should do everything we can to minimize our footprint and preserve as much of it as possible. Wilderness is not greenspace.
The sterile patches of grass surrounding these parking lots is greenspace;
Greenspace is not wilderness, it is not a yard, it is not a park. Greenspace is filler. If you find greenspace is neccessary, then you are doing something wrong.
Let's say that we have a neighbourhood with a moderate amount of greenspace. Let's say the accumulated area taken up by the the patches of lawn, shrubbery, etc. is around 10 acres. It adds up quickly when there is so much of it;
If we built our neighbourhood without greenspace, and instead shifted everything inward where the greenspace would have been, our neighbourhood would take up 10 less acres. Honestly, I think there would be much more than 10 acres of greenspace in the above neighbourhood when we are talking about areas that are over 90% non-place. But, to keep the numbers reasonable in this example, we will just say there are 10 acres of greenspace. We can still fit everything in - just sans greenspace.
Now instead of greenspace, let's build 10 acres of park.
When I say you do not need greenspace I am not talking about getting rid of nature in cities, I mean save that space and use it elsewhere - build a proper park, or if you enjoy the natural state of the environment - return that extra space you save as wilderness. This is much better than greenspace surrounding parking lots where squirrels get ran over running from one tree to the next.
I used to work in a suburban office campus - my wife she would sometimes drive over to have lunch with me. She was not allowed into the office campus for security reasons, so we would have to go elsewhere to find a place to sit and eat together. However despite being surrounded by grass and trees everywhere;
We would have to drive about two miles to the nearest park where we could sit and eat together. Here lies the irony - we built greenspace to make us feel closer to nature, but when we actually want to be close to nature (find a place where it is socially acceptable to sit under a tree) we have to travel for miles. Greenspace is useless - it spaces things out so you have to travel farther, spreads your tax base out, and its necessity indicates an otherwise unpleasant environment. I would much rather have a park.
If you think 10 acres of parkland is a little too much for one neighbourhood, how about 5 acres of parkland and 5 additional acres of tax-generating development?
I made this image months ago, but I feel that it is relevant to share here;
I had many complaints that I am making things up, and there is no way that is 30 feet. I am not lying. Here is the Google Earth measurement;
That restaurant, even if it were stand-alone on the edge of town, would be worth at least $200,000. Let's say they sell $1 million of food a year (which is not that much - they could be open 12 hours a day, sell 16 meals an hour, an average of $15 a meal, 365 days a year = $1,051,200), at 7% sales tax that and 1% property tax, they would generate about $75,584 of tax revenue per year, plus payroll taxes, liquor licenses, etc. The American development pattern is extremely unproductive compared to the Traditional City pattern where we would try to utilize every little patch of land before sprawling out.
By now, you can identify greenspace, know that greenspace is just filler that is made irrelevant if we simply built pleasant streets in the first place, and how greenspace takes up space that could be put to better use, such as a park, a business, or wilderness. I am going to talk more about parks in my next blog post.