diff --git a/src/spec/chunks.ts b/src/spec/chunks.ts
index 867d1c4..a0c3e37 100644
--- a/src/spec/chunks.ts
+++ b/src/spec/chunks.ts
@@ -10,6 +10,21 @@ export const tags = (base: string) => {
   return { tags: [tag] };
 };
 
+// Overrides the tag on every operation in a paths object. Used by multi-tile buildings (e.g.
+// /v2/beach1../v2/beach13) so all tiles group under a single Swagger UI tag rather than one
+// tag per tile path.
+export const retag = <T extends Record<string, Record<string, { tags?: string[] }>>>(
+  paths: T,
+  tag: string
+): T => {
+  for (const pathItem of Object.values(paths)) {
+    for (const operation of Object.values(pathItem)) {
+      operation.tags = [tag];
+    }
+  }
+  return paths;
+};
+
 export const security = () => {
   return { security: [{ tokenHttpAuthentication: [] }] };
 };
diff --git a/src/spec/paths.ts b/src/spec/paths.ts
index 72e4e33..a77a004 100644
--- a/src/spec/paths.ts
+++ b/src/spec/paths.ts
@@ -6,7 +6,19 @@ import { apple } from './paths/buildings/apple.ts';
 import { archaeology } from './paths/buildings/archaeology.ts';
 import { artMuseum } from './paths/modules/artmuseum.ts';
 import { atmosphericEvaporator } from './paths/buildings/atmosphericevaporator.ts';
-import { beach } from './paths/buildings/beach.ts';
+import { beach1 } from './paths/buildings/beach1.ts';
+import { beach2 } from './paths/buildings/beach2.ts';
+import { beach3 } from './paths/buildings/beach3.ts';
+import { beach4 } from './paths/buildings/beach4.ts';
+import { beach5 } from './paths/buildings/beach5.ts';
+import { beach6 } from './paths/buildings/beach6.ts';
+import { beach7 } from './paths/buildings/beach7.ts';
+import { beach8 } from './paths/buildings/beach8.ts';
+import { beach9 } from './paths/buildings/beach9.ts';
+import { beach10 } from './paths/buildings/beach10.ts';
+import { beach11 } from './paths/buildings/beach11.ts';
+import { beach12 } from './paths/buildings/beach12.ts';
+import { beach13 } from './paths/buildings/beach13.ts';
 import { bean } from './paths/buildings/bean.ts';
 import { beeldeban } from './paths/buildings/beeldeban.ts';
 import { beeldebanNest } from './paths/buildings/beeldebannest.ts';
@@ -64,8 +76,16 @@ import { lagoon } from './paths/buildings/lagoon.ts';
 import { lake } from './paths/buildings/lake.ts';
 import { lapis } from './paths/buildings/lapis.ts';
 import { lapisForest } from './paths/buildings/lapisforest.ts';
+import { lcota } from './paths/buildings/lcota.ts';
+import { lcotb } from './paths/buildings/lcotb.ts';
+import { lcotc } from './paths/buildings/lcotc.ts';
+import { lcotd } from './paths/buildings/lcotd.ts';
+import { lcote } from './paths/buildings/lcote.ts';
+import { lcotf } from './paths/buildings/lcotf.ts';
+import { lcotg } from './paths/buildings/lcotg.ts';
+import { lcoth } from './paths/buildings/lcoth.ts';
+import { lcoti } from './paths/buildings/lcoti.ts';
 import { libraryOfJith } from './paths/buildings/libraryofjith.ts';
-import { lostCityOfTyleon } from './paths/buildings/lostcityoftyleon.ts';
 import { luxuryHousing } from './paths/buildings/luxuryhousing.ts';
 import { malcud } from './paths/buildings/malcud.ts';
 import { malcudField } from './paths/buildings/malcudfield.ts';
@@ -109,7 +129,10 @@ import { singularity } from './paths/buildings/singularity.ts';
 import { soup } from './paths/buildings/soup.ts';
 import { spaceJunkPark } from './paths/buildings/spacejunkpark.ts';
 import { spacePort } from './paths/buildings/spaceport.ts';
-import { spaceStationLab } from './paths/buildings/spacestationlab.ts';
+import { ssla } from './paths/buildings/ssla.ts';
+import { sslb } from './paths/buildings/sslb.ts';
+import { sslc } from './paths/buildings/sslc.ts';
+import { ssld } from './paths/buildings/ssld.ts';
 import { stationCommand } from './paths/modules/stationcommand.ts';
 import { stats } from './paths/stats.ts';
 import { stockpile } from './paths/buildings/stockpile.ts';
@@ -148,7 +171,19 @@ export const paths = {
   ...archaeology,
   ...artMuseum,
   ...atmosphericEvaporator,
-  ...beach,
+  ...beach1,
+  ...beach2,
+  ...beach3,
+  ...beach4,
+  ...beach5,
+  ...beach6,
+  ...beach7,
+  ...beach8,
+  ...beach9,
+  ...beach10,
+  ...beach11,
+  ...beach12,
+  ...beach13,
   ...bean,
   ...beeldeban,
   ...beeldebanNest,
@@ -206,8 +241,16 @@ export const paths = {
   ...lake,
   ...lapis,
   ...lapisForest,
+  ...lcota,
+  ...lcotb,
+  ...lcotc,
+  ...lcotd,
+  ...lcote,
+  ...lcotf,
+  ...lcotg,
+  ...lcoth,
+  ...lcoti,
   ...libraryOfJith,
-  ...lostCityOfTyleon,
   ...luxuryHousing,
   ...malcud,
   ...malcudField,
@@ -251,7 +294,10 @@ export const paths = {
   ...soup,
   ...spaceJunkPark,
   ...spacePort,
-  ...spaceStationLab,
+  ...ssla,
+  ...sslb,
+  ...sslc,
+  ...ssld,
   ...stationCommand,
   ...stats,
   ...stockpile,
diff --git a/src/spec/paths/buildings/beach.ts b/src/spec/paths/buildings/beach.ts
deleted file mode 100644
index f296a8d..0000000
--- a/src/spec/paths/buildings/beach.ts
+++ /dev/null
@@ -1,5 +0,0 @@
-import { buildingBase, buildingCommonMethods, buildingView } from '../../chunks.ts';
-
-const base = buildingBase('Beach');
-
-export const beach = { ...buildingCommonMethods(base), ...buildingView(base) };
diff --git a/src/spec/paths/buildings/beach1.ts b/src/spec/paths/buildings/beach1.ts
new file mode 100644
index 0000000..3a6ad04
--- /dev/null
+++ b/src/spec/paths/buildings/beach1.ts
@@ -0,0 +1,5 @@
+import { buildingBase, buildingCommonMethods, buildingView, retag } from '../../chunks.ts';
+
+const base = buildingBase('Beach1');
+
+export const beach1 = retag({ ...buildingCommonMethods(base), ...buildingView(base) }, 'beach');
diff --git a/src/spec/paths/buildings/beach10.ts b/src/spec/paths/buildings/beach10.ts
new file mode 100644
index 0000000..729cb9e
--- /dev/null
+++ b/src/spec/paths/buildings/beach10.ts
@@ -0,0 +1,5 @@
+import { buildingBase, buildingCommonMethods, buildingView, retag } from '../../chunks.ts';
+
+const base = buildingBase('Beach10');
+
+export const beach10 = retag({ ...buildingCommonMethods(base), ...buildingView(base) }, 'beach');
diff --git a/src/spec/paths/buildings/beach11.ts b/src/spec/paths/buildings/beach11.ts
new file mode 100644
index 0000000..7a610f0
--- /dev/null
+++ b/src/spec/paths/buildings/beach11.ts
@@ -0,0 +1,5 @@
+import { buildingBase, buildingCommonMethods, buildingView, retag } from '../../chunks.ts';
+
+const base = buildingBase('Beach11');
+
+export const beach11 = retag({ ...buildingCommonMethods(base), ...buildingView(base) }, 'beach');
diff --git a/src/spec/paths/buildings/beach12.ts b/src/spec/paths/buildings/beach12.ts
new file mode 100644
index 0000000..b274127
--- /dev/null
+++ b/src/spec/paths/buildings/beach12.ts
@@ -0,0 +1,5 @@
+import { buildingBase, buildingCommonMethods, buildingView, retag } from '../../chunks.ts';
+
+const base = buildingBase('Beach12');
+
+export const beach12 = retag({ ...buildingCommonMethods(base), ...buildingView(base) }, 'beach');
diff --git a/src/spec/paths/buildings/beach13.ts b/src/spec/paths/buildings/beach13.ts
new file mode 100644
index 0000000..4627bab
--- /dev/null
+++ b/src/spec/paths/buildings/beach13.ts
@@ -0,0 +1,5 @@
+import { buildingBase, buildingCommonMethods, buildingView, retag } from '../../chunks.ts';
+
+const base = buildingBase('Beach13');
+
+export const beach13 = retag({ ...buildingCommonMethods(base), ...buildingView(base) }, 'beach');
diff --git a/src/spec/paths/buildings/beach2.ts b/src/spec/paths/buildings/beach2.ts
new file mode 100644
index 0000000..108ed18
--- /dev/null
+++ b/src/spec/paths/buildings/beach2.ts
@@ -0,0 +1,5 @@
+import { buildingBase, buildingCommonMethods, buildingView, retag } from '../../chunks.ts';
+
+const base = buildingBase('Beach2');
+
+export const beach2 = retag({ ...buildingCommonMethods(base), ...buildingView(base) }, 'beach');
diff --git a/src/spec/paths/buildings/beach3.ts b/src/spec/paths/buildings/beach3.ts
new file mode 100644
index 0000000..fa57e3a
--- /dev/null
+++ b/src/spec/paths/buildings/beach3.ts
@@ -0,0 +1,5 @@
+import { buildingBase, buildingCommonMethods, buildingView, retag } from '../../chunks.ts';
+
+const base = buildingBase('Beach3');
+
+export const beach3 = retag({ ...buildingCommonMethods(base), ...buildingView(base) }, 'beach');
diff --git a/src/spec/paths/buildings/beach4.ts b/src/spec/paths/buildings/beach4.ts
new file mode 100644
index 0000000..7b8ffbf
--- /dev/null
+++ b/src/spec/paths/buildings/beach4.ts
@@ -0,0 +1,5 @@
+import { buildingBase, buildingCommonMethods, buildingView, retag } from '../../chunks.ts';
+
+const base = buildingBase('Beach4');
+
+export const beach4 = retag({ ...buildingCommonMethods(base), ...buildingView(base) }, 'beach');
diff --git a/src/spec/paths/buildings/beach5.ts b/src/spec/paths/buildings/beach5.ts
new file mode 100644
index 0000000..22055aa
--- /dev/null
+++ b/src/spec/paths/buildings/beach5.ts
@@ -0,0 +1,5 @@
+import { buildingBase, buildingCommonMethods, buildingView, retag } from '../../chunks.ts';
+
+const base = buildingBase('Beach5');
+
+export const beach5 = retag({ ...buildingCommonMethods(base), ...buildingView(base) }, 'beach');
diff --git a/src/spec/paths/buildings/beach6.ts b/src/spec/paths/buildings/beach6.ts
new file mode 100644
index 0000000..2bb2198
--- /dev/null
+++ b/src/spec/paths/buildings/beach6.ts
@@ -0,0 +1,5 @@
+import { buildingBase, buildingCommonMethods, buildingView, retag } from '../../chunks.ts';
+
+const base = buildingBase('Beach6');
+
+export const beach6 = retag({ ...buildingCommonMethods(base), ...buildingView(base) }, 'beach');
diff --git a/src/spec/paths/buildings/beach7.ts b/src/spec/paths/buildings/beach7.ts
new file mode 100644
index 0000000..c3b06d6
--- /dev/null
+++ b/src/spec/paths/buildings/beach7.ts
@@ -0,0 +1,5 @@
+import { buildingBase, buildingCommonMethods, buildingView, retag } from '../../chunks.ts';
+
+const base = buildingBase('Beach7');
+
+export const beach7 = retag({ ...buildingCommonMethods(base), ...buildingView(base) }, 'beach');
diff --git a/src/spec/paths/buildings/beach8.ts b/src/spec/paths/buildings/beach8.ts
new file mode 100644
index 0000000..2631ada
--- /dev/null
+++ b/src/spec/paths/buildings/beach8.ts
@@ -0,0 +1,5 @@
+import { buildingBase, buildingCommonMethods, buildingView, retag } from '../../chunks.ts';
+
+const base = buildingBase('Beach8');
+
+export const beach8 = retag({ ...buildingCommonMethods(base), ...buildingView(base) }, 'beach');
diff --git a/src/spec/paths/buildings/beach9.ts b/src/spec/paths/buildings/beach9.ts
new file mode 100644
index 0000000..da42e81
--- /dev/null
+++ b/src/spec/paths/buildings/beach9.ts
@@ -0,0 +1,5 @@
+import { buildingBase, buildingCommonMethods, buildingView, retag } from '../../chunks.ts';
+
+const base = buildingBase('Beach9');
+
+export const beach9 = retag({ ...buildingCommonMethods(base), ...buildingView(base) }, 'beach');
diff --git a/src/spec/paths/buildings/lcota.ts b/src/spec/paths/buildings/lcota.ts
new file mode 100644
index 0000000..3be216d
--- /dev/null
+++ b/src/spec/paths/buildings/lcota.ts
@@ -0,0 +1,8 @@
+import { buildingBase, buildingCommonMethods, buildingView, retag } from '../../chunks.ts';
+
+const base = buildingBase('Lcota');
+
+export const lcota = retag(
+  { ...buildingCommonMethods(base), ...buildingView(base) },
+  'lostcityoftyleon'
+);
diff --git a/src/spec/paths/buildings/lcotb.ts b/src/spec/paths/buildings/lcotb.ts
new file mode 100644
index 0000000..a6755ad
--- /dev/null
+++ b/src/spec/paths/buildings/lcotb.ts
@@ -0,0 +1,8 @@
+import { buildingBase, buildingCommonMethods, buildingView, retag } from '../../chunks.ts';
+
+const base = buildingBase('Lcotb');
+
+export const lcotb = retag(
+  { ...buildingCommonMethods(base), ...buildingView(base) },
+  'lostcityoftyleon'
+);
diff --git a/src/spec/paths/buildings/lcotc.ts b/src/spec/paths/buildings/lcotc.ts
new file mode 100644
index 0000000..1fdd1db
--- /dev/null
+++ b/src/spec/paths/buildings/lcotc.ts
@@ -0,0 +1,8 @@
+import { buildingBase, buildingCommonMethods, buildingView, retag } from '../../chunks.ts';
+
+const base = buildingBase('Lcotc');
+
+export const lcotc = retag(
+  { ...buildingCommonMethods(base), ...buildingView(base) },
+  'lostcityoftyleon'
+);
diff --git a/src/spec/paths/buildings/lcotd.ts b/src/spec/paths/buildings/lcotd.ts
new file mode 100644
index 0000000..a505266
--- /dev/null
+++ b/src/spec/paths/buildings/lcotd.ts
@@ -0,0 +1,8 @@
+import { buildingBase, buildingCommonMethods, buildingView, retag } from '../../chunks.ts';
+
+const base = buildingBase('Lcotd');
+
+export const lcotd = retag(
+  { ...buildingCommonMethods(base), ...buildingView(base) },
+  'lostcityoftyleon'
+);
diff --git a/src/spec/paths/buildings/lcote.ts b/src/spec/paths/buildings/lcote.ts
new file mode 100644
index 0000000..39ccb64
--- /dev/null
+++ b/src/spec/paths/buildings/lcote.ts
@@ -0,0 +1,8 @@
+import { buildingBase, buildingCommonMethods, buildingView, retag } from '../../chunks.ts';
+
+const base = buildingBase('Lcote');
+
+export const lcote = retag(
+  { ...buildingCommonMethods(base), ...buildingView(base) },
+  'lostcityoftyleon'
+);
diff --git a/src/spec/paths/buildings/lcotf.ts b/src/spec/paths/buildings/lcotf.ts
new file mode 100644
index 0000000..65ed27b
--- /dev/null
+++ b/src/spec/paths/buildings/lcotf.ts
@@ -0,0 +1,8 @@
+import { buildingBase, buildingCommonMethods, buildingView, retag } from '../../chunks.ts';
+
+const base = buildingBase('Lcotf');
+
+export const lcotf = retag(
+  { ...buildingCommonMethods(base), ...buildingView(base) },
+  'lostcityoftyleon'
+);
diff --git a/src/spec/paths/buildings/lcotg.ts b/src/spec/paths/buildings/lcotg.ts
new file mode 100644
index 0000000..43cd59b
--- /dev/null
+++ b/src/spec/paths/buildings/lcotg.ts
@@ -0,0 +1,8 @@
+import { buildingBase, buildingCommonMethods, buildingView, retag } from '../../chunks.ts';
+
+const base = buildingBase('Lcotg');
+
+export const lcotg = retag(
+  { ...buildingCommonMethods(base), ...buildingView(base) },
+  'lostcityoftyleon'
+);
diff --git a/src/spec/paths/buildings/lcoth.ts b/src/spec/paths/buildings/lcoth.ts
new file mode 100644
index 0000000..5b93c40
--- /dev/null
+++ b/src/spec/paths/buildings/lcoth.ts
@@ -0,0 +1,8 @@
+import { buildingBase, buildingCommonMethods, buildingView, retag } from '../../chunks.ts';
+
+const base = buildingBase('Lcoth');
+
+export const lcoth = retag(
+  { ...buildingCommonMethods(base), ...buildingView(base) },
+  'lostcityoftyleon'
+);
diff --git a/src/spec/paths/buildings/lcoti.ts b/src/spec/paths/buildings/lcoti.ts
new file mode 100644
index 0000000..6194024
--- /dev/null
+++ b/src/spec/paths/buildings/lcoti.ts
@@ -0,0 +1,8 @@
+import { buildingBase, buildingCommonMethods, buildingView, retag } from '../../chunks.ts';
+
+const base = buildingBase('Lcoti');
+
+export const lcoti = retag(
+  { ...buildingCommonMethods(base), ...buildingView(base) },
+  'lostcityoftyleon'
+);
diff --git a/src/spec/paths/buildings/lostcityoftyleon.ts b/src/spec/paths/buildings/lostcityoftyleon.ts
deleted file mode 100644
index 82fd5f6..0000000
--- a/src/spec/paths/buildings/lostcityoftyleon.ts
+++ /dev/null
@@ -1,5 +0,0 @@
-import { buildingBase, buildingCommonMethods, buildingView } from '../../chunks.ts';
-
-const base = buildingBase('LostCityOfTyleon');
-
-export const lostCityOfTyleon = { ...buildingCommonMethods(base), ...buildingView(base) };
diff --git a/src/spec/paths/buildings/spacestationlab.ts b/src/spec/paths/buildings/spacestationlab.ts
deleted file mode 100644
index a64b595..0000000
--- a/src/spec/paths/buildings/spacestationlab.ts
+++ /dev/null
@@ -1,123 +0,0 @@
-import {
-  operation,
-  buildingBase,
-  buildingCommonMethods,
-  buildingView,
-  requestBodySchema,
-  response200,
-  response500,
-  security,
-  statusSchema,
-  tags,
-} from '../../chunks.ts';
-
-// Accessible via /ssla, /sslb, /sslc, and /ssld — all four lab components must be built, but the
-// methods below (other than the shared building methods) are only exposed on /ssla per the docs.
-const base = buildingBase('SpaceStationLab');
-
-const buildingIdRequestBody = requestBodySchema({
-  type: 'object',
-  required: ['building_id'],
-  properties: { building_id: { type: 'integer', description: 'The unique id of the building.' } },
-});
-
-const makePlanSchema = {
-  type: 'object',
-  properties: {
-    types: {
-      type: 'array',
-      items: {
-        type: 'object',
-        properties: {
-          type: { type: 'string' },
-          name: { type: 'string' },
-          image: { type: 'string' },
-          url: { type: 'string' },
-        },
-      },
-    },
-    level_costs: {
-      type: 'array',
-      items: {
-        type: 'object',
-        properties: {
-          level: { type: 'integer' },
-          food: { type: 'integer' },
-          ore: { type: 'integer' },
-          water: { type: 'integer' },
-          energy: { type: 'integer' },
-          waste: { type: 'integer' },
-          time: { type: 'integer' },
-        },
-      },
-    },
-    subsidy_cost: { type: 'integer' },
-    making: { type: 'string', description: 'Only present if a plan is currently being made.' },
-  },
-};
-
-export const spaceStationLab = {
-  ...buildingCommonMethods(base),
-  ...buildingView(base, { make_plan: makePlanSchema }),
-
-  [`${base}/make_plan`]: {
-    post: {
-      ...tags(base),
-      ...security(),
-      ...operation('Make plan.', 'Starts the plan creation process. Returns the building view.'),
-      ...requestBodySchema({
-        type: 'object',
-        required: ['building_id', 'type', 'level'],
-        properties: {
-          building_id: { type: 'integer', description: 'The unique id of the building.' },
-          type: { type: 'string', description: "Key from view's make_plan > types, e.g. 'ibs'." },
-          level: {
-            type: 'integer',
-            minimum: 1,
-            maximum: 30,
-            description: "The plan level (1-30), from view's make_plan > level_costs.",
-          },
-        },
-      }),
-      responses: {
-        ...response200('Starts the plan creation process. Returns the building view.', {
-          type: 'object',
-          required: ['building', 'status'],
-          properties: {
-            building: { $ref: '#/components/schemas/building' },
-            status: statusSchema(),
-            make_plan: makePlanSchema,
-          },
-        }),
-        ...response500(),
-      },
-    },
-  },
-
-  [`${base}/subsidize_plan`]: {
-    post: {
-      ...tags(base),
-      ...security(),
-      ...operation(
-        'Subsidize plan.',
-        "Spends essentia equal to view's subsidy_cost to complete the current plan immediately. Returns the building view. Throws 1011."
-      ),
-      ...buildingIdRequestBody,
-      responses: {
-        ...response200(
-          "Spends essentia equal to view's subsidy_cost to complete the current plan immediately. Returns the building view. Throws 1011.",
-          {
-            type: 'object',
-            required: ['building', 'status'],
-            properties: {
-              building: { $ref: '#/components/schemas/building' },
-              status: statusSchema(),
-              make_plan: makePlanSchema,
-            },
-          }
-        ),
-        ...response500(),
-      },
-    },
-  },
-};
diff --git a/src/spec/paths/buildings/ssla.ts b/src/spec/paths/buildings/ssla.ts
new file mode 100644
index 0000000..86a37df
--- /dev/null
+++ b/src/spec/paths/buildings/ssla.ts
@@ -0,0 +1,129 @@
+import {
+  operation,
+  buildingBase,
+  buildingCommonMethods,
+  buildingView,
+  requestBodySchema,
+  response200,
+  response500,
+  retag,
+  security,
+  statusSchema,
+  tags,
+} from '../../chunks.ts';
+
+// The Space Station Lab is a four-tile building — /v2/ssla, /v2/sslb, /v2/sslc, and /v2/ssld, all
+// of which must be built. Only the north-west tile (/v2/ssla) exposes the plan-making methods
+// below; the other three (sslb.ts, sslc.ts, ssld.ts) are plain buildings. Every tile's operations
+// are retagged to `spacestationlab` so they share one Swagger UI group.
+const base = buildingBase('Ssla');
+
+const buildingIdRequestBody = requestBodySchema({
+  type: 'object',
+  required: ['building_id'],
+  properties: { building_id: { type: 'integer', description: 'The unique id of the building.' } },
+});
+
+const makePlanSchema = {
+  type: 'object',
+  properties: {
+    types: {
+      type: 'array',
+      items: {
+        type: 'object',
+        properties: {
+          type: { type: 'string' },
+          name: { type: 'string' },
+          image: { type: 'string' },
+          url: { type: 'string' },
+        },
+      },
+    },
+    level_costs: {
+      type: 'array',
+      items: {
+        type: 'object',
+        properties: {
+          level: { type: 'integer' },
+          food: { type: 'integer' },
+          ore: { type: 'integer' },
+          water: { type: 'integer' },
+          energy: { type: 'integer' },
+          waste: { type: 'integer' },
+          time: { type: 'integer' },
+        },
+      },
+    },
+    subsidy_cost: { type: 'integer' },
+    making: { type: 'string', description: 'Only present if a plan is currently being made.' },
+  },
+};
+
+export const ssla = retag(
+  {
+    ...buildingCommonMethods(base),
+    ...buildingView(base, { make_plan: makePlanSchema }),
+
+    [`${base}/make_plan`]: {
+      post: {
+        ...tags(base),
+        ...security(),
+        ...operation('Make plan.', 'Starts the plan creation process. Returns the building view.'),
+        ...requestBodySchema({
+          type: 'object',
+          required: ['building_id', 'type', 'level'],
+          properties: {
+            building_id: { type: 'integer', description: 'The unique id of the building.' },
+            type: { type: 'string', description: "Key from view's make_plan > types, e.g. 'ibs'." },
+            level: {
+              type: 'integer',
+              minimum: 1,
+              maximum: 30,
+              description: "The plan level (1-30), from view's make_plan > level_costs.",
+            },
+          },
+        }),
+        responses: {
+          ...response200('Starts the plan creation process. Returns the building view.', {
+            type: 'object',
+            required: ['building', 'status'],
+            properties: {
+              building: { $ref: '#/components/schemas/building' },
+              status: statusSchema(),
+              make_plan: makePlanSchema,
+            },
+          }),
+          ...response500(),
+        },
+      },
+    },
+
+    [`${base}/subsidize_plan`]: {
+      post: {
+        ...tags(base),
+        ...security(),
+        ...operation(
+          'Subsidize plan.',
+          "Spends essentia equal to view's subsidy_cost to complete the current plan immediately. Returns the building view. Throws 1011."
+        ),
+        ...buildingIdRequestBody,
+        responses: {
+          ...response200(
+            "Spends essentia equal to view's subsidy_cost to complete the current plan immediately. Returns the building view. Throws 1011.",
+            {
+              type: 'object',
+              required: ['building', 'status'],
+              properties: {
+                building: { $ref: '#/components/schemas/building' },
+                status: statusSchema(),
+                make_plan: makePlanSchema,
+              },
+            }
+          ),
+          ...response500(),
+        },
+      },
+    },
+  },
+  'spacestationlab'
+);
diff --git a/src/spec/paths/buildings/sslb.ts b/src/spec/paths/buildings/sslb.ts
new file mode 100644
index 0000000..c8eafce
--- /dev/null
+++ b/src/spec/paths/buildings/sslb.ts
@@ -0,0 +1,8 @@
+import { buildingBase, buildingCommonMethods, buildingView, retag } from '../../chunks.ts';
+
+const base = buildingBase('Sslb');
+
+export const sslb = retag(
+  { ...buildingCommonMethods(base), ...buildingView(base) },
+  'spacestationlab'
+);
diff --git a/src/spec/paths/buildings/sslc.ts b/src/spec/paths/buildings/sslc.ts
new file mode 100644
index 0000000..0908d8c
--- /dev/null
+++ b/src/spec/paths/buildings/sslc.ts
@@ -0,0 +1,8 @@
+import { buildingBase, buildingCommonMethods, buildingView, retag } from '../../chunks.ts';
+
+const base = buildingBase('Sslc');
+
+export const sslc = retag(
+  { ...buildingCommonMethods(base), ...buildingView(base) },
+  'spacestationlab'
+);
diff --git a/src/spec/paths/buildings/ssld.ts b/src/spec/paths/buildings/ssld.ts
new file mode 100644
index 0000000..1ea23ad
--- /dev/null
+++ b/src/spec/paths/buildings/ssld.ts
@@ -0,0 +1,8 @@
+import { buildingBase, buildingCommonMethods, buildingView, retag } from '../../chunks.ts';
+
+const base = buildingBase('Ssld');
+
+export const ssld = retag(
+  { ...buildingCommonMethods(base), ...buildingView(base) },
+  'spacestationlab'
+);