diff --git a/packages/web3/package.json b/packages/web3/package.json
index 67ac8a463..4f546be11 100644
--- a/packages/web3/package.json
+++ b/packages/web3/package.json
@@ -25,6 +25,7 @@
         "debug": "^4.3.4",
         "ethers": "^5.7.2",
         "lodash": "^4.17.21",
+        "lru-cache": "^11.0.1",
         "nanoid": "^4.0.0",
         "viem": "^1.18.2",
         "zod": "^3.21.4"
diff --git a/packages/web3/src/v3/SpaceRegistrar.ts b/packages/web3/src/v3/SpaceRegistrar.ts
index 6c68ae428..7614fbaea 100644
--- a/packages/web3/src/v3/SpaceRegistrar.ts
+++ b/packages/web3/src/v3/SpaceRegistrar.ts
@@ -5,10 +5,7 @@ import { ILegacySpaceArchitectShim } from './ILegacySpaceArchitectShim'
 
 import { Space } from './Space'
 import { ethers } from 'ethers'
-
-interface SpaceMap {
-    [spaceId: string]: Space
-}
+import { LRUCache } from 'lru-cache'
 
 /**
  * A class to manage the creation of space stubs
@@ -20,9 +17,12 @@ export class SpaceRegistrar {
     private readonly provider: ethers.providers.Provider
     private readonly spaceArchitect: ISpaceArchitectShim
     private readonly legacySpaceArchitect: ILegacySpaceArchitectShim
-    private readonly spaces: SpaceMap = {}
+    private readonly spaces: LRUCache<string, Space>
 
     constructor(config: BaseChainConfig, provider: ethers.providers.Provider) {
+        this.spaces = new LRUCache<string, Space>({
+            max: 100,
+        })
         this.config = config
         this.provider = provider
         this.spaceArchitect = new ISpaceArchitectShim(config.addresses.spaceFactory, provider)
@@ -41,13 +41,19 @@ export class SpaceRegistrar {
     }
 
     public getSpace(spaceId: string): Space | undefined {
-        if (this.spaces[spaceId] === undefined) {
+        // aellis 10/2024 we don't really need to cache spaces, but they instantiate a lot of objects
+        // for the contracts and it's worth not wasting memory if we need to access the same space multiple times
+        // this code is also used on the server so we don't want to cache spaces for too long
+        const space = this.spaces.get(spaceId)
+        if (!space) {
             const spaceAddress = SpaceAddressFromSpaceId(spaceId)
             if (!spaceAddress || spaceAddress === ethers.constants.AddressZero) {
-                return undefined // space is not found
+                return undefined
             }
-            this.spaces[spaceId] = new Space(spaceAddress, spaceId, this.config, this.provider)
+            const space = new Space(spaceAddress, spaceId, this.config, this.provider)
+            this.spaces.set(spaceId, space)
+            return space
         }
-        return this.spaces[spaceId]
+        return space
     }
 }
diff --git a/yarn.lock b/yarn.lock
index 399afe631..e8f8478b8 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -4619,6 +4619,7 @@ __metadata:
     jest: ^29.6.2
     jest-extended: ^4.0.1
     lodash: ^4.17.21
+    lru-cache: ^11.0.1
     nanoid: ^4.0.0
     ts-jest: ^29.1.1
     ts-node: ^10.9.1
@@ -15053,6 +15054,13 @@ __metadata:
   languageName: node
   linkType: hard
 
+"lru-cache@npm:^11.0.1":
+  version: 11.0.1
+  resolution: "lru-cache@npm:11.0.1"
+  checksum: 6056230a99fb399234e82368b99586bd4740079e80649102f681b19337b7d8c6bc8dd7f8b8c59377c31d26deb89f548b717ae932e139b4b795879d920fccf820
+  languageName: node
+  linkType: hard
+
 "lru-cache@npm:^5.1.1":
   version: 5.1.1
   resolution: "lru-cache@npm:5.1.1"