diff --git a/src/analyzer.rs b/src/analyzer.rs
index e487fa9..71d89fe 100644
--- a/src/analyzer.rs
+++ b/src/analyzer.rs
@@ -165,6 +165,7 @@ fn analyze_enum_properties(
             type_: rust_type,
             name: name.to_string(),
             serde_annot: vec![],
+            extra_annot: vec![],
             docs: member_doc,
         })
     }
@@ -308,6 +309,7 @@ fn analyze_object_properties(
                 type_: rust_type,
                 name: key.to_string(),
                 serde_annot: vec![],
+                extra_annot: vec![],
                 docs: member_doc,
             })
         } else {
@@ -320,6 +322,7 @@ fn analyze_object_properties(
                     "default".into(),
                     "skip_serializing_if = \"Option::is_none\"".into(),
                 ],
+                extra_annot: vec![],
                 docs: member_doc,
             })
             // TODO: must capture `default` key here instead of blindly using serde default
diff --git a/src/main.rs b/src/main.rs
index cfcf667..03283f2 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -184,11 +184,10 @@ impl Kopium {
 
         if let Some(schema) = data {
             log::debug!("schema: {}", serde_json::to_string_pretty(&schema)?);
-            let mut output = analyze(schema, &kind)?;
-            if self.rust_case {
-                output = output.rename();
-            }
-            let structs = output.0;
+            let structs = analyze(schema, &kind)?
+                .rename(self.rust_case)
+                .builder_fields(self.builders)
+                .0;
 
             if !self.hide_prelude {
                 self.print_prelude(&structs);
@@ -243,16 +242,10 @@ impl Kopium {
                         } else {
                             format_ident!("{}", m.name)
                         };
-                        let spec_trimmed_type = m.type_.as_str().replace(&format!("{}Spec", kind), &kind);
-                        if self.builders {
-                            if spec_trimmed_type.starts_with("Option<") {
-                                println!("#[builder(default, setter(strip_option))]");
-                            } else if spec_trimmed_type.starts_with("Vec<")
-                                || spec_trimmed_type.starts_with("BTreeMap<")
-                            {
-                                println!("#[builder(default)]");
-                            }
+                        for annot in m.extra_annot {
+                            println!("    {}", annot);
                         }
+                        let spec_trimmed_type = m.type_.as_str().replace(&format!("{}Spec", kind), &kind);
                         if s.is_enum {
                             // NB: only supporting plain enumerations atm, not oneOf
                             println!("    {},", safe_name);
diff --git a/src/output.rs b/src/output.rs
index 920c411..c4550b5 100644
--- a/src/output.rs
+++ b/src/output.rs
@@ -36,6 +36,11 @@ pub struct Member {
     ///
     /// The `rename` attribute is only set if `Container::rename` is called.
     pub serde_annot: Vec<String>,
+    /// Additional field level annotations
+    ///
+    /// This is currently used by optional builders.
+    pub extra_annot: Vec<String>,
+    /// Documentation properties extracted from the property
     pub docs: Option<String>,
 }
 
@@ -77,6 +82,18 @@ impl Container {
             }
         }
     }
+
+    /// Add builder annotations
+    pub fn builder_fields(&mut self) {
+        for m in &mut self.members {
+            if m.type_.starts_with("Option<") {
+                m.extra_annot
+                    .push("#[builder(default, setter(strip_option))]".to_string());
+            } else if m.type_.starts_with("Vec<") || m.type_.starts_with("BTreeMap<") {
+                m.extra_annot.push("#[builder(default)]".to_string());
+            }
+        }
+    }
 }
 
 impl Output {
@@ -84,9 +101,24 @@ impl Output {
     ///
     /// Converts [*].members[*].name to snake_case for structs, PascalCase for enums,
     /// and adds a serde(rename = "orig_name") annotation to `serde_annot`.
-    pub fn rename(mut self) -> Self {
-        for c in &mut self.0 {
-            c.rename()
+    pub fn rename(mut self, rust_case: bool) -> Self {
+        if rust_case {
+            for c in &mut self.0 {
+                c.rename()
+            }
+        }
+        self
+    }
+
+    /// Add builders to all output members
+    ///
+    /// Adds #[builder(default, setter(strip_option))] to all option types.
+    /// Adds #[builder(default)] to required vec and btreemaps.
+    pub fn builder_fields(mut self, builders: bool) -> Self {
+        if builders {
+            for c in &mut self.0 {
+                c.builder_fields()
+            }
         }
         self
     }