Question: The book is fairly new, at most 4 years and it's the start of a series.
I know vampires were involved and that the bookstore was open at night but
that's about it.

Answer: 
*[Night Owls](https://www.goodreads.com/book/show/18281997-night-owls)* by Lauren M. Roy

[![Book cover](https://i.stack.imgur.com/H5S6B.jpg)](https://i.stack.imgur.com/H5S6B.jpg)

> 
> *Night Owls **book store** is the one spot on campus **open late** enough to help out even the most practiced slacker. The employees’ penchant for fighting the evil creatures of the night is just a perk…*
> 
> 
> Valerie McTeague’s business model is simple: provide the students of Edgewood College with a late-night study haven and stay as far away from the underworld conflicts of her vampire brethren as possible. She’s lived that life, and the price she paid was far too high to ever want to return.
> 
> 
> Elly Garrett hasn’t known any life except that of fighting the supernatural werewolf-like beings known as Creeps or Jackals. But she always had her mentor and foster father by her side—until he gave his life protecting a book that the Creeps desperately want to get their hands on.
> 
> 
> When the book gets stashed at Night Owls for safe keeping, those Val holds nearest and dearest are put in mortal peril. Now Val and Elly will have to team up, along with a mismatched crew of humans, **vampires**, and lesbian succubi, to stop the Jackals from getting their claws on the book and unleashing unnamed horrors…
> 
> 
> 

It was released in 2014 and has been stated to be part of a series with *[Grave Matters](http://Grave%20Matters)* released in 2015.
This *could* be the [Alex Verus](http://www.amazon.co.uk/gp/product/B0068PHXVA?keywords=alex%20verus&qid=1447144238&ref_=sr_1_2&s=digital-text&sr=1-2) series

[![Fated](https://i.stack.imgur.com/rUeuU.jpg)](https://i.stack.imgur.com/rUeuU.jpg)

Alex is a clairvoyant, who can see the future. He also runs a Magic store. It's not actually a bookstore *per se*, but a general magic store. If I recall correctly, the store was generally open at odd hours.

The first book in the series (Fated) was published in 2012.

I can't quite recall the status of vampires in the series though. So it may be a miss on that part.