Amazing post, Dave, and definitely an important topic. My first book I used one of the larger “editorial agencies” you mentioned. The quality wasn’t bad but there was no direct contact with the editor. Just ship it to them and they ship it back. I’ve tried out several editors now and found a very good one who did a great job on my list book. Once you find a good editor, stick with him/her and build a relationship if you can. Thanks for the list provided and this editors test is a great addition.
When you’ve found someone who seems like a decent candidate so far, make first contact. (The contact form on the website is fine as a first step.) Introduce yourself and state what you are looking for (a developmental critique, copyediting, etc.). Give a very brief description of your project, including its genre and approximate length. Give an idea of your planned next step and any deadlines (even if only approximate ones). For example, have you already signed a contract with a subsidy press for publication next fall? Are you planning to submit the manuscript to publishers and/or literary agents after editing?
From your comment, you may be in search of a manuscript critique, where you pay a professional to essentially conduct a beta read with the added benefit of their experience and knowledge about the craft. Then they’ll give you a few pages’ worth of considerations. When I don’t have the time for such critiques (and I only critique nonfiction), I refer my clients to
Copy editors catch spelling mistakes, errors in grammar, and inconsistencies in your text. They know when compound words are hyphenated (or not), whether the book is ‘laying’ or ‘lying’ on the table, and whether eagles have ‘talons’ or ‘claws.’ They’ll go through your manuscript line by line for accuracy and consistency of style. A good copy editor will make sure that your voice remains intact while restructuring sentences, and substituting weak word choices for stronger ones.
Editors are an integral part of content generation at any level. A quality editor is responsible for the final, polished look and feel of any written content produced by a client. Freelance editors provide a flexible and talent-driven way to manage multiple products in a professional way. They can be used for a wide variety of projects, from editing for syntax and grammar on regular blog posts to providing structure, pacing, and style feedback for nearly finished novels.
I keep second guessing myself on things like where a space should go when someone is talking and if I have to keep saying “He said” “She said” etc., over and over. Or Mom vs mom. It goes on and on so I am thrilled to read Trish’s response about hiring an editor for a chapter or two. I would love to do that when I finish before I do a complete rewrite myself. I think that would help save so much time.
At first, I didn't want to add Fiverr to this list because there are a LOT of editors on Fiverr that aren't exactly a good investment.  But, that doesn't mean there aren't amazing opportunities out there.  Editors like Kerrie McLoughlin, have done an amazing job with their Editor Fiver gigs.  However, if you do decide to go through Fiverr, then ABSOLUTELY use my test to ensure you aren't hiring someone who isn't qualified.
I've done four covers through Ebook Launch for two different series, and they've knocked it out of the park every time. In one case they were creating brand new covers based on a high-concept mashup idea. In another, they were following in the footsteps of a different designer, who'd already established the look for an existing series. Both times -- whether coming up with something totally new or sticking to an established style -- they did fantastic work. I love my Ebook Launch covers!
Hm, I’m a longtime freelance book editor and have a few thoughts to share. I think one page of editing is not enough to gauge much, and that you should be able to get a sample edit of 10 (double-spaced 12-point) pages from a potential editor. You’ll have a better idea after a complete chapter has been edited, and you should have a contract that allows either you or the editor to opt out cleanly at various stages. Another thought: sometimes authors don’t know what level of edit they need, and a good editor can assess this based on reading a few pages of your ms. and spot-checking the remainder. Also: a lot of book editors (like me) work primarily for publishers rather than for individuals. It’s just easier. I know I’ll get paid, I don’t need to educate publisher clients about the process itself, and they send me regular work, so we get to know each other’s needs and preferences. Lastly, I wouldn’t really expect a newcomer editor to be able to handle a booklength manuscript very well (I was that person once — eek). If it’s someone really new, they should have had good training somewhere imo. Book editing is a technical undertaking. It’s also about knowing what to leave alone. Inexperienced people often tamper with authors’ work unnecessarily. Anyhow, I’d be happy to answer any questions.
Just launched my new novel "Who is Waldo Wiggins?" this past weekend and the response has been great. Ebook Launch did all the cover art (front and back) for the paperback and ebook, and they knocked it out of the park. The first thing people mention is the cover art and the great job that was done on it. Personally, I couldn't be happier. The end result was beyond my expectations.

I have over 18 years of experience writing about, researching, and analyzing complex public policy, historical, political, and international affairs subjects ranging from UN peacekeeping to ancient Rome and my work is regularly published online by a variety of websites. Published in Newsweek, the Modern War Institute at West Point, Mic, The Jerusalem Post, The Jordan Times, and other publications.

Book editing is both subjective and not. There are rules, and yet the rules of writing are often intentionally broken. You want to find someone who knows the rules, who will fix the writing, and who’s flexible enough to know that voice is sacrosanct, and that editing out colloquialisms, slang, and humor is a no-no (unless it’s overdone or not working, that is).
You might hire someone for a proofread, but let the editor know that you’re open to hearing from him or her if the work needs a heavier edit. The editor would need to present you with evidence in the form of sample pages that showcase what’s needed—and your job is to make sure you agree. You want to feel like an editor’s edits are polishing your work and making it shine. If you feel dread or anger, or even if you feel misunderstood, it’s likely not a good fit. At the very least you want to share your reactions with the editor so they can respond or change course.
A site where you can hire editors on a freelance basis. Has a range of prices so there is something to suit most budgets. Be sure to take the usual caution when working with a freelancer. Check out their reputation carefully first and communicate carefully with them in order to determine a schedule, payment expectations, methods of communication etc.
I’m sorry you feel that way about my participation in the discussion and defending editors of similar background to myself from what I considered unwarranted disparagement. Perhaps the only approach that would have 100% proof against accusations of “trolling” would have been to allow the claims to stand unchallenged, but that did not seem fair to people who come here to get useful information.
Great article, Blake. I often receive ‘undercooked’ manuscripts from writers. Two other points come to mind: 1) Budgeting for an editor is important. You should start putting some money aside for editing fees whilst you’re still writing your first draft (preferably tuck it into an interest-earning account!). 2) Don’t leave it too late, either. Often writers don’t realise that editors are booked up several months in advance. Start contacting editors whilst you’re still at the self-editing stage or have your MS with beta-readers, to find out what their availability is.