So the city that I live in plants a tree in front of every new house built. They planted this one a few weeks back and we where wondering what it was and how big it would get since they put it right under the electrecity lines. I will put a few pictures of the tree and the flower buds that are coming out.

thank you!

Honey locust, Gleditsia triacanthos f.inermis. It could be a cultivar like 'Shademaster' or 'Skyline':

https://www.google.ca/search?q...

Looks like a good choice for roadside...
shade or specimen tree; in either case, its extremely fine-textured, filtered shade is almost unique amongst commercially available large trees, allowing plants that prefer partial shade conditions (certain turfgrasses, shrubs, and perennials) to be planted underneath that normally could not grow beneath other shade trees
often used, along with Green Ash (Fraxinus pennsylvanica), as a shade tree for extreme urban stress areas (such as parking lot islands and sidewalk tree squares); in these areas, the stresses encountered include restricted root zones, poor rocky clay soils, alkaline soils, intense heat, drought, high light reflectance, Winter salt spray, and trunk/branch wounding) Source http://hvp.osu.edu/pocketgarde...

It seems strange that they would plant such a large tree in front of a house right under the power lines. Its also a tree for zones 4-9 but i live in 3a.
Any other ideas on what it could be?

thank you very much

I don't know where you are in NB but Fredericton has been planting honey locust. It can be hardy to zone 3. How close is it to the power lines, directly underneath? As street trees they don't get as big as under better conditions. It is commonly planted as a street tree. Choices for that purpose are becoming limited with the spread of the emerald ash borer and also Dutch elm disease.

Not sure why they would do that but the cultivar Skyline is hardy to zone 3 and is listed much smaller than the species at 35 to 40 ft. We have trees that get to 100 ft near the roads here, but they were already there, the city didn't plant them. The power company has to get your permission and then they come out and trim them. I don't know why a city would put that work upon themselves or the power companies. Poor planning on their part, here is a link to that cultivar http://www.missouribotanicalga...

There aren't many trees with that type of leave, the Black Locust is similar but the leaves are rounder on the tips than yours. They get 70'.

Honeylocust trees are very good trees if they need to be trimmed because of height parameters. Unlike most trees, as they get older, they don't have such a strong tendency for a central leader, or multiple upright leaders. In other words, if you trim the top of a mature tree (like under the power line), it won't have the strong tendency to immediately resume growth straight upward as most trees do. And instead of looking like a dumb tree with the top cut off, it will look more natural, too.