diff --git a/python/src/lib.rs b/python/src/lib.rs
index f2600d5..c85739e 100644
--- a/python/src/lib.rs
+++ b/python/src/lib.rs
@@ -4,8 +4,8 @@
 use std::path::PathBuf;
 
 use liblrs::lrs::LrmHandle;
+use liblrs::lrs::{LrsBase, Properties};
 use liblrs::lrs_ext::*;
-use liblrs::{builder::Properties, lrs::LrsBase};
 use pyo3::{exceptions::PyTypeError, prelude::*};
 
 /// Holds the whole Linear Referencing System.
diff --git a/src/builder.rs b/src/builder.rs
index be85506..dcbcc48 100644
--- a/src/builder.rs
+++ b/src/builder.rs
@@ -9,32 +9,11 @@ use geo::{Coord, Distance};
 
 use crate::curves::{Curve, CurveError, CurveProjection, SphericalLineStringCurve};
 
+use crate::lrs::Properties;
 use crate::lrs_ext::ExtLrs;
 use crate::lrs_generated::{self, *};
 use crate::osm_helpers::sort_edges;
-
-/// A key-value `HashMap` to add metadata to the objects.
-pub type Properties = std::collections::HashMap<String, String>;
-
-#[macro_export]
-/// Build a properties map:
-/// `properties!("source" => "openstreetmap", "license" => "ODbL")`.
-macro_rules! properties {
-    ($($k:expr => $v:expr),* $(,)?) => {{
-        core::convert::From::from([$(($k.to_owned(), $v.to_owned()),)*])
-    }};
-}
-
-/// Builds a [`Properties`] from a FlatBuffer vector of Property
-///
-/// Implementation note: as [`Properties`] is just an alias, we cannot `impl` for it (e.g. Into)
-pub fn from_fb(properties: Option<Vector<ForwardsUOffset<lrs_generated::Property>>>) -> Properties {
-    properties
-        .unwrap_or_default()
-        .iter()
-        .map(|property| (property.key().to_string(), property.value().to_string()))
-        .collect()
-}
+use crate::properties;
 
 /// The linear position of an [`Anchor`] doesn’t always match the measured distance.
 /// For example if a road was transformed into a bypass, resulting in a longer road,
diff --git a/src/lrm_scale.rs b/src/lrm_scale.rs
index fcda73a..998ac18 100644
--- a/src/lrm_scale.rs
+++ b/src/lrm_scale.rs
@@ -4,7 +4,7 @@
 use geo::Point;
 use thiserror::Error;
 
-use crate::builder::Properties;
+use crate::lrs::Properties;
 
 /// Measurement along the `Curve`. Typically in meters.
 pub type CurvePosition = f64;
diff --git a/src/lrs.rs b/src/lrs.rs
index 0ba683c..954ba82 100644
--- a/src/lrs.rs
+++ b/src/lrs.rs
@@ -8,10 +8,10 @@ extern crate flatbuffers;
 
 use std::cmp::Ordering;
 
+use flatbuffers::{ForwardsUOffset, Vector};
 use geo::orient::Direction;
 use thiserror::Error;
 
-use crate::builder::{from_fb, Properties};
 use crate::curves::{Curve, CurveError};
 use crate::lrm_scale::{
     Anchor, CurvePosition, LrmScale, LrmScaleError, LrmScaleMeasure, ScalePosition,
@@ -620,6 +620,29 @@ impl<CurveImpl: Curve> Lrs<CurveImpl> {
     }
 }
 
+/// A key-value `HashMap` to add metadata to the objects.
+pub type Properties = std::collections::HashMap<String, String>;
+
+#[macro_export]
+/// Build a properties map:
+/// `properties!("source" => "openstreetmap", "licence" => "ODbL")`.
+macro_rules! properties {
+    ($($k:expr => $v:expr),* $(,)?) => {{
+        core::convert::From::from([$(($k.to_owned(), $v.to_owned()),)*])
+    }};
+}
+
+/// Builds a [`Properties`] from a FlatBuffer vector of Property
+///
+/// Implementation note: as [`Properties`] is just an alias, we cannot `impl` for it (e.g. Into)
+pub fn from_fb(properties: Option<Vector<ForwardsUOffset<lrs_generated::Property>>>) -> Properties {
+    properties
+        .unwrap_or_default()
+        .iter()
+        .map(|property| (property.key().to_string(), property.value().to_string()))
+        .collect()
+}
+
 #[cfg(test)]
 mod tests {
     use approx::assert_relative_eq;
diff --git a/src/lrs_ext.rs b/src/lrs_ext.rs
index cd696f4..ace0028 100644
--- a/src/lrs_ext.rs
+++ b/src/lrs_ext.rs
@@ -3,10 +3,10 @@
 
 use geo::{Coord, Point};
 
-use crate::builder::Properties;
 use crate::curves::{Curve, SphericalLineStringCurve};
 use crate::lrm_scale::Anchor;
 use crate::lrm_scale::LrmScaleMeasure;
+use crate::lrs::Properties;
 use crate::lrs::{self, TraversalPosition};
 use crate::lrs::{LrsBase, LrsError};