diff --git a/packages/core/src/pattern.mjs b/packages/core/src/pattern.mjs
index e5c7ff9e25a..f9abd74be97 100644
--- a/packages/core/src/pattern.mjs
+++ b/packages/core/src/pattern.mjs
@@ -73,11 +73,14 @@ export function Pattern(designConfig) {
  * @param {object} part - The part to add
  * @return {object} this - The Pattern instance
  */
-Pattern.prototype.addPart = function (part) {
+Pattern.prototype.addPart = function (part, resolveImmediately = false) {
   if (typeof part?.draft === 'function') {
     if (part.name) {
       this.designConfig.parts.push(part)
-      this.__initialized = false
+      if (resolveImmediately) {
+        this.store.log.debug(`Perfoming runtime resolution of new part ${part.name}`)
+        this.__resolvePart([part])
+      } else this.__initialized = false
     } else this.store.log.error(`Part must have a name`)
   } else this.store.log.error(`Part must have a draft() method`)
 
diff --git a/packages/core/tests/pattern-runtime-parts.test.mjs b/packages/core/tests/pattern-runtime-parts.test.mjs
new file mode 100644
index 00000000000..a3a640e6721
--- /dev/null
+++ b/packages/core/tests/pattern-runtime-parts.test.mjs
@@ -0,0 +1,101 @@
+import chai from 'chai'
+import { Design } from '../src/index.mjs'
+
+const expect = chai.expect
+
+describe('Pattern', () => {
+  describe('.addPart()', () => {
+    const part1 = {
+      name: 'test',
+      draft: ({ part }) => part,
+    }
+
+    const part2 = {
+      name: 'test2',
+      from: part1,
+      draft: ({ part }) => part,
+    }
+
+    const part3 = {
+      name: 'test3',
+      after: part2,
+      draft: ({ part }) => part,
+    }
+
+    describe('with resolveImmediately: true', () => {
+      it('Should add the part to the internal part object', () => {
+        const design = new Design({ parts: [part1] })
+        const pattern = new design()
+        pattern.__init()
+        pattern.addPart(part2, true)
+        expect(pattern.__designParts.test2).to.equal(part2)
+      })
+
+      it('Should resolve injected dependencies for the new part', () => {
+        const design = new Design({ parts: [part1] })
+        const pattern = new design()
+        pattern.__init()
+        pattern.addPart(part2, true)
+        expect(pattern.__inject.test2).to.equal('test')
+      })
+
+      it('Should resolve all dependencies for the new part', () => {
+        const design = new Design({ parts: [part1] })
+        const pattern = new design()
+        pattern.__init()
+        pattern.addPart(part3, true)
+        expect(pattern.config.resolvedDependencies.test3).to.have.members(['test', 'test2'])
+        expect(pattern.__designParts.test2).to.equal(part2)
+      })
+
+      it('Should add a the measurements for the new part', () => {
+        const design = new Design({ parts: [part1] })
+        const pattern = new design()
+        pattern.__init()
+
+        const part2 = {
+          name: 'test2',
+          measurements: ['neck'],
+          draft: ({ part }) => part,
+        }
+
+        pattern.addPart(part2, true)
+        expect(pattern.config.measurements).to.include('neck')
+      })
+
+      it('Should add the plugins for the new part', () => {
+        const design = new Design({ parts: [part1] })
+        const pattern = new design()
+        pattern.__init()
+
+        const plugin = { name: 'testPlugin' }
+        const part2 = {
+          name: 'test2',
+          plugins: [plugin],
+          draft: ({ part }) => part,
+        }
+
+        pattern.addPart(part2, true)
+        expect(pattern.config.plugins.testPlugin).to.equal(plugin)
+      })
+
+      it('Should add the options for the new part', () => {
+        const design = new Design({ parts: [part1] })
+        const pattern = new design()
+        pattern.__init()
+
+        const opt1 = { pct: 10, min: 0, max: 50 }
+        const part2 = {
+          name: 'test2',
+          options: {
+            opt1,
+          },
+          draft: ({ part }) => part,
+        }
+
+        pattern.addPart(part2, true)
+        expect(pattern.config.options.opt1).to.equal(opt1)
+      })
+    })
+  })
+})