Which house is the one you are considering purchasing? If they are all the same house, it is a McMansion, meaning it is already all over the place so do what you want, lol.

These pictures are all the same house, last one is its current state. its 2500 square feet and decidedly not a mcmansion. Lol

Either the listing information of 2,500 SF of living area is incorrect or the house appears much larger than the useful living area within. A volume-inefficient design like that might be labelled a midi-McMansion (mini-McMansion and micro-McMansion just don't seem right.) Millworkman is correct in his assessment: the home borrows from a number of different architectural styles. Calling it "transitional" architectural style might work. To my eye, it borrows most from Queen Anne/shingle style but nothing is authentic. Nothing.

I wouldn't call it a mcMansion (not enough gables, lol) and while not an authentic particular style, it's a nice house. I love the deep front and back porches.

I don't think changing to square columns would make a huge difference. Would you cut back the tree...?

I'd keep the columns, remove the pseudo-Victorian trim and paint the trim and wood siding in a cohesive scheme. You have a number of different beige to brown shades: the columns are darker than the shingles, which is darker than the siding. I'd work on shingle style, which traditionally has white or cream trim. I'd thin/trim the tree in front of the door. I would paint the horizontal trim in the left gable the same color as the siding.

It looks like a lovely house.

@Sigrid Thank you so much for your helpful comment! It is so nice to recieve feedback that is actually useful ;)

It’s a builder melange of styles. Depending on your taste and budget it could be easily updated into a more traditional transitional style since the form of the house is pretty traditional. This will require replacing all the windows which won’t be cheap, but frankly at this age is probably due.

When I needed to paint my house, I posted here. I wanted a color that would go well with my slate and copper roof. The copper is aged to statue-of-liberty green and the slate has a greenish tinge. The first commenter didn't like the green and everyone else agreed that I should replace the roof (which is not in the budget, does not need replacing and which I love) and if they offered color advice at all, it was in the context of a new roof, rather than the roof I have and love.

I try to give useful advice.

I can see what you are saying about the columns. They don't seem to fit. The ones around back look to be square and darker and fit better with the house. The front also has a white railing. I'd think the same all away around would be better.

But first, before doing anything like that or changing colors, etc., the tree has to be addressed. It is way too large for where it's been planted. Very unfortunate that it wasn't planted in the lawn area in front of the house. For its size, it's much too close to the house, with branches hanging over the roof and who knows what the roots are doing to the foundation. I suppose it could be trimmed, but the result would be less than ideal and an ongoing task since it's not a dwarf variety. Take the tree out and plant a new one in the lawn area in front. You could even spend more money and get a larger one.

My house has 100 year old windows. The one replacement window is crappy. Maybe your windows need replacing, but I doubt it.

My house also has both square and round columns, which are original because we have photos from 1918.

Don't listen to people's sneers about McMansions, people have always mixed styles jn houses. Queen Annes were popular in the late 1800s, early 1900s and were supposedly in the style of Queen Anne who was queen in the early 1700s. They often included things like wraparound porches which were not found in early 1700s architecture.