What to Look for in a Developmental Editor (and What to Avoid)

Developmental editing is the most consequential — and least regulated — service in the editorial ecosystem. Unlike copyediting or proofreading, which operate against broadly agreed-upon standards, developmental editing is an act of interpretation: a reader with trained judgment engaging at the deepest structural and thematic level with your manuscript, and attempting to identify the gap between what it is and what it is trying to be.

When the relationship works, it can be transformative. When it doesn't — when the editor imposes their own aesthetic vision, misreads the manuscript's intentions, or simply lacks the experience to engage at the level the work requires — it can send a writer down months of revision in entirely the wrong direction. Because there is no licensing body, no universal credential, and a wide variation in what different editors mean when they use the words "developmental editing," the responsibility for vetting falls almost entirely on the writer.

This guide is designed to help with that vetting — what to look for, what questions to ask, and which warning signs are worth taking seriously.

What developmental editing actually is

The confusion begins with terminology, and it is worth clearing up before anything else. Developmental editing — sometimes called structural editing or substantive editing — operates at the level of the whole manuscript: its architecture, its pacing, the coherence of its themes, the clarity of its central argument (in nonfiction) or the believability of its character arcs and plot logic (in fiction). A developmental edit does not fix sentences. It asks whether the right things are happening in the right order, whether the reader's experience of the book is what the writer intended, and what structural interventions might close the gap between the two.

It is distinct from a manuscript assessment (sometimes called a manuscript critique or editorial report), which provides a written analysis without detailed in-text markup; from line editing, which engages at the sentence and paragraph level; and from copyediting, which addresses grammar, consistency, and house style. Some editors offer combined services; many specialize. Knowing which service a manuscript actually needs is itself a first step — and a developmental editor who begins by assessing what the manuscript requires is demonstrating good professional practice.

What to look for

Genre experience and demonstrated taste

A developmental editor needs to be a sophisticated, experienced reader of the specific type of work they are editing. This sounds obvious, but it matters enormously in practice. An editor whose background is in commercial fiction and whose client list is primarily thrillers will bring different instincts to a quiet, literary novel — instincts that may not serve the work well, however technically skilled they are. Ask prospective editors directly about their reading life: what authors they admire, which recent books in the genre they found interesting and why. The answers will reveal whether their aesthetic sensibility is compatible with the manuscript they would be editing.

A clear, substantive sample edit

Most reputable developmental editors offer a sample edit — typically on the first ten to thirty pages of the manuscript — before committing to a full project. A good sample is invaluable. It shows how the editor thinks: whether their observations are specific to this manuscript or generic; whether their suggestions push toward what the work is trying to be or toward something else; whether their editorial voice is one the writer can work productively with over months of revision. A sample that consists largely of copyediting notes — grammar corrections, missing commas — rather than structural and thematic engagement signals that the editor either misunderstands the scope of developmental work or is not operating at the level the service requires.

Questions before prescriptions

The best developmental editors are curious before they are prescriptive. In early conversations, they will ask about the manuscript's intentions — what the writer is trying to achieve, who the intended reader is, what the writer feels is working and what they sense is not. This curiosity is a professional necessity: an editor who diagnoses problems and prescribes solutions without understanding the writer's vision is imposing their own reading rather than serving the work. An editor who listens first is working with the book that exists, not the book they might have written themselves.

"A story has no beginning or end; arbitrarily one chooses that moment of experience from which to look back or from which to look ahead."

— Graham Greene, The End of the Affair, 1951

Greene's observation about story applies equally to the editorial process. A developmental editor is not correcting a finished object — they are engaging with a work in progress, at a chosen moment in its development. The best editors understand that the choices they are evaluating are provisional, not fixed, and they offer their analysis accordingly: as observations and questions, not verdicts.

Verifiable credits and references

Legitimate developmental editors with significant experience will have credits — authors they have worked with, published books they contributed to, positions they held at publishing houses or literary agencies. These credits should be verifiable. It is entirely reasonable to ask an editor for the names of two or three writers they have worked with and to contact those writers directly. A question worth asking references: did the editor's notes help the writer understand their own book more clearly, or did the process feel like being pulled in someone else's direction?

Red flags worth taking seriously

Questions worth asking before you commit

• ✦What is your editorial background, and what types of manuscripts do you most frequently work with?
• ✦Can you describe your editorial process — what does a full developmental edit typically include, and what form does your feedback take?
• ✦What is your typical turnaround, and how do you handle follow-up questions after the edit is delivered?
• ✦Are you able to provide two or three references from writers in a similar genre to mine?
• ✦Can you offer a sample edit on the opening pages before we agree to a full project?
• ✦What is your approach when your editorial instincts differ from what the writer tells you they are trying to achieve?

That last question is particularly revealing. A good answer will acknowledge the tension, explain how the editor weighs their own reading against the writer's stated intentions, and make clear that the writer's vision takes precedence. An answer that positions the editor's judgment as authoritative is information worth having before signing anything.

A note on timing

The question of when to hire a developmental editor is as important as the question of who. Developmental editing is most productive when the manuscript has been through at least one serious revision by the writer — when the writer has already identified the problems they can solve and has a clear sense of what they cannot diagnose from the inside. Sending a first draft to a developmental editor is rarely the best use of a substantial investment: many of the structural problems a first draft contains will resolve themselves in revision, and a developmental edit commissioned too early may address issues that the writer would have found and fixed anyway.

The right time is when a writer has done the work they can do alone, when trusted readers have weighed in, and when the remaining problems feel structural rather than surface — when the sense is that something is not working but the nature of what is wrong is not yet clear. That is the moment a skilled developmental editor can make the most significant difference.