Hi Raymond, I think the lack of a basement in a style that could have one, like a Colonial or Ranch detracts from value. In an area of the country where basements are expected/common, a Colonial on slab may be viewed less attractively than a split level. Generally Colonials are the most popular style, but of course it all depends on taste and also what is prevalent in the community of choice. Some areas were built up at a time when splits, bi-levels or ranches were especially popular - if you are targeting an area like that, then the homes people expect to find there are - well - expected.
For sure, the choice of style is a matter of taste, but your agent is guiding you well based on my experience. In this part of the country (NE), the absence of a basement is a tough sell. I marketed a beautiful home with a crawl space and this was our biggest obstacle and in the end, affected the price and the time to sell.
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