Tree decisions are really best done from a "felt" perspective on the site, not from a picture taken from outside (and looked at by people who have never been there). So with respect to removal, only do it now if you really want to, not because someone on the internet has said so, even if it is me :-) And I think you still haven't told us what kind of tree it is? It's still possible that it is something really wonderful with deep roots, and if the shade is in exactly the right place, ignoring me IS an option! For new tree placement, start with thinking about where and what time of day you want shade (I don't think you've told us yet which way the house faces). And then, from looking out the windows, which views do you want to block/enjoy? And then, what do you want arriving guests or the pizza delivery guy to be able to see? Imagine the canopy starting at about 8' high. Have once person stand inside and look out while the other goes outside holding something - an upside-down rake or an umbrella - to help imagine what it would look like from inside to have a tree in certain spots. Compare this to the existing tree. Looking out from the house, or from your side door, if you could wave a magic wand, where would you move its canopy to... right, the left, or lower? Sometimes we have certain ideas in our heads that we have to work through or see before we can let go of them, and I detect you have a certain adherence to plantings lining the walkway! The sidewalk does make a handy edge, and it is nice to have growing things to enjoy as you walk to the front door (although you more often use the other door, you say). And it gives you a place to start - it can be scary to let go of the edge and plunge a shovel somewhere in the middle of the yard. The downside of these edge plantings is that they are constraining. Hard to have a fridge delivered, or to bring Aunt Mabel in for Christmas dinner with her walker, or along the driveway, hard to open a car door and step out. I am showing below a doodled idea that expands the sidewalk a bit, but whether you plant along a sidewalk or driveway that is narrow or wide, going tall along it - with trees - is not a good idea. Constraining your feet with low plants is one thing, constraining your shoulders or head is another. Near my parents' place, some idiot planted a weeping birch right by the public sidewalk. Someone shorter than me prunes the canopy to a height that is comfortable for them :-) On a rainy night, this is... annoying! Karin L PS Bearing in mind that I am neither artist nor professional designer, here is one idea sketched onto your plan view. If you print out a few more copies of the blank that you posted, you can doodle your way to a design that suits you. This expands a bit on your sidewalk slab, and then plants adjacent to it, in a curve that mirrors the curved bed of shrubs you might put at the corner. You can place new trees into the shrubbery bed or in the central grass area however it best suits you. Whether you extend the beds along the straight parts or just have the curved parts depends on just how much planting area you want. On the outside of your semicircular shrub bed, something like carpet junipers might be the best thing - that way people won't walk over it but it will be both low and attractive.

First of all, the bed in the first picture would be improved if the curve didn't have that strange swiggle on the left hand side. Tight curves like that are never attractive. Also, your ninebark, if it's like the majority on the market, will get very large--mine are in the neighborhood of 10 by 12, so it will fill most of the space on the left. Also, if it doesn't get enough sun, and according to your description it may not, it will green out.

Ghostly vision, I used gallery glass crystal clear and leading strips as well as the liquid lead. It was super easy. Just google it and you will see some very easy tutorials. I am super sloppy. If I can do it, anyone can!

I'd begin by removing hedges next to the house. Remove the mis managed topiary. They have been poorly sheared and some lean. The thin trunk trees near the foundation need to be removed. Major trees need limbed up and maybe thinned. This is the most important step, in my opinion. I am not a pro. I'd remove the shrub near the mail box. I would also transplant the grass like plants near the street. Not sure where you can use them. The bed along the foundation does not seem deep enough for shrubs. Can you tell us how deep it is? Your house has nice brick and interesting low windows. I don't think it will need an elaborate landscape. How would you feel about something less complicated? A courtyard would have to be part of your overall new landscape design.