diff --git a/README.md b/README.md
index 67f66b9..d7310e8 100644
--- a/README.md
+++ b/README.md
@@ -13,8 +13,9 @@ This package is based on [Luigi](https://luigi.readthedocs.io/en/stable/index.ht
 ### Requirements
 
 - Python 3.5+
-- **~210 GB** space for constructing the dialogues
+- **~210 GB** space for constructing the dialogues with default settings
   - Final zip is only **4.2 GB** though
+  - [You can get away with less disk space, ~30GB](https://github.com/microsoft/dstc8-reddit-corpus/#i-dont-have-enough-disk-space)
 - An internet connection
 - 24-72 hours to generate the data
   - Depends on speed of internet connection, how many cores, how much RAM 
@@ -155,6 +156,11 @@ The raw data takes up the most space (>144 GB) but also takes the longest time t
 
 Filtering and building the dialogues discards a lot of the data, so only keeping things in the `dialogues*` directories is safe.
 
+**If you just want the final dataset you can use the `--small` option to delete raw and intermediate data the dataset is generated, e.g.**
+
+```bash
+python scripts/reddit.py generate --small
+```
 
 #### Windows
 
diff --git a/dstc8_reddit/config.py b/dstc8_reddit/config.py
index 49ac3f7..5cd938a 100644
--- a/dstc8_reddit/config.py
+++ b/dstc8_reddit/config.py
@@ -132,6 +132,7 @@ class RawConfig(BaseModel):
     'RC_2018-08.xz': 'b8939ecd280b48459c929c532eda923f3a2514db026175ed953a7956744c6003',
     'RC_2018-10.xz': 'cadb242a4b5f166071effdd9adbc1d7a78c978d3622bc01cd0f20d3a4c269bd0',
   }
+  delete_intermediate_data: bool = False
 
 
 class RedditConfig:
@@ -139,12 +140,16 @@ class RedditConfig:
   _cfg = None
 
   @classmethod
-  def initialize(cls, cfgyaml=None):
+  def initialize(cls, cfgyaml=None, extra_config=None):
     kwargs = {}
     if cfgyaml:
       with open(cfgyaml, 'r', encoding='utf-8') as f:
         kwargs = yaml.load(f, Loader=yaml.FullLoader)
 
+    # Will override any preset and anything from the config yaml
+    if extra_config:
+      kwargs.update(extra_config)
+
     kwargs['all_subreddits'] = set(kwargs.get('all_subreddits', []))
     kwargs['held_out_subreddits'] = set(kwargs.get('held_out_subreddits', []))
 
diff --git a/dstc8_reddit/tasks/construction.py b/dstc8_reddit/tasks/construction.py
index 6439ba6..18791c9 100644
--- a/dstc8_reddit/tasks/construction.py
+++ b/dstc8_reddit/tasks/construction.py
@@ -5,6 +5,7 @@ import rapidjson as json
 
 from dstc8_reddit.config import RedditConfig
 from dstc8_reddit.tasks.filtering import FilterRawSubmissions, FilterRawComments
+from dstc8_reddit.util import delete_requires
 
 
 class BuildDialogues(luigi.Task):
@@ -113,3 +114,7 @@ class BuildDialogues(luigi.Task):
       if dlgs_to_write:
         f.write(''.join(dlgs_to_write))
       f.close()
+
+  def on_success(self):
+    if RedditConfig().delete_intermediate_data:
+      delete_requires(self.requires())
diff --git a/dstc8_reddit/tasks/filtering.py b/dstc8_reddit/tasks/filtering.py
index ec8b807..51c338d 100644
--- a/dstc8_reddit/tasks/filtering.py
+++ b/dstc8_reddit/tasks/filtering.py
@@ -4,7 +4,7 @@ import rapidjson as json
 from dstc8_reddit.config import RedditConfig
 from dstc8_reddit.constants import Patterns, SUBMISSION_ID_PREFIX
 from dstc8_reddit.tasks.download import DownloadRawFile
-from dstc8_reddit.util import process_file_linewise, SubmissionJsonOutputter, CommentJsonOutputter
+from dstc8_reddit.util import process_file_linewise, SubmissionJsonOutputter, CommentJsonOutputter, delete_requires
 
 
 class RawSubmissionFilterer:
@@ -155,6 +155,10 @@ class FilterRawSubmissions(luigi.Task):
         buffer_size=RedditConfig().dump_interval
       )
 
+  def on_success(self):
+    if RedditConfig().delete_intermediate_data:
+      delete_requires(self.requires())
+
 
 class FilterRawComments(luigi.Task):
   date = luigi.Parameter()
@@ -182,3 +186,7 @@ class FilterRawComments(luigi.Task):
         outputter=CommentJsonOutputter(),
         buffer_size=RedditConfig().dump_interval
       )
+
+  def on_success(self):
+    if RedditConfig().delete_intermediate_data:
+      delete_requires(self.requires())
diff --git a/dstc8_reddit/tasks/packaging.py b/dstc8_reddit/tasks/packaging.py
index b1ef8a8..f530f80 100644
--- a/dstc8_reddit/tasks/packaging.py
+++ b/dstc8_reddit/tasks/packaging.py
@@ -14,10 +14,11 @@ from zipfile import ZipFile, ZIP_DEFLATED
 
 from dstc8_reddit.config import RedditConfig, Subset
 from dstc8_reddit.tasks.sampling import SampleDialogues
+from dstc8_reddit.util import delete_requires
 
 
 class SplitDialogues(luigi.Task):
-  """ This is a heavy task, but needed to do the splitting required for reaggregation """
+  """ This is a heavy task, but needed to do the splitting required for reaggregation. """
   date = luigi.Parameter()
 
   def __init__(self, *args, **kwargs):
@@ -92,9 +93,16 @@ class SplitDialogues(luigi.Task):
           if key in buffers and len(buffers[key]) > 0:
             outfile.write(''.join(buffers[key]))
 
+  def on_success(self):
+    if RedditConfig().delete_intermediate_data:
+      delete_requires(self.requires())
+
 
 class MergeDialoguesOverDates(luigi.Task):
-  """ Decompresses because haven't tested thread safety in zip """
+  """
+  Decompresses because haven't tested thread safety in zip.
+  Also cannot call `delete_requires` in `on_success()` since there are cross-dependencies.
+  """
   split = luigi.IntParameter()
   subreddit = luigi.Parameter()
 
@@ -155,3 +163,14 @@ class ZipDataset(luigi.Task):
           f.write('\n'.join([make_json_for_subreddit(t) for t in sorted(tasks)]) + '\n')
 
       archive.close()
+
+  def on_success(self):
+    if RedditConfig().delete_intermediate_data:
+      delete_requires(self.requires())
+
+    parent_reqs = self.requires()
+    if not isinstance(parent_reqs, list):
+      parent_reqs = [parent_reqs]
+
+    for r in parent_reqs:
+      delete_requires(r.requires())
diff --git a/dstc8_reddit/tasks/sampling.py b/dstc8_reddit/tasks/sampling.py
index 6f31de9..fb38567 100644
--- a/dstc8_reddit/tasks/sampling.py
+++ b/dstc8_reddit/tasks/sampling.py
@@ -10,6 +10,7 @@ from numpy import random
 from dstc8_reddit.config import RedditConfig
 from dstc8_reddit.constants import Patterns
 from dstc8_reddit.tasks.construction import BuildDialogues
+from dstc8_reddit.util import delete_requires
 from dstc8_reddit.validation import SessionItem
 
 
@@ -214,3 +215,7 @@ class SampleDialogues(luigi.Task):
       logging.debug(f" > [{self.date}] # DLGS: before sample={len(dlgs)}, after sample={len(sampled_dlgs)}")
       lens = [len(d) for d in sampled_dlgs]
       logging.debug(f" > [{self.date}] DLG LENGTHS: max={max(lens)}, min={min(lens)}, avg={sum(lens) / len(lens):2.2f}")
+
+  def on_success(self):
+    if RedditConfig().delete_intermediate_data:
+      delete_requires(self.requires())
\ No newline at end of file
diff --git a/dstc8_reddit/util.py b/dstc8_reddit/util.py
index 9630fab..449e59a 100644
--- a/dstc8_reddit/util.py
+++ b/dstc8_reddit/util.py
@@ -2,6 +2,7 @@ import bz2
 import gzip
 import logging
 import lzma
+import os
 import rapidjson as json
 
 from dstc8_reddit.constants import Patterns, OUTPUT_FIELDS, SELF_BREAK_TOKEN, SUBMISSION_ID_PREFIX, COMMENT_ID_PREFIX
@@ -90,3 +91,19 @@ def process_file_linewise(
   if out_ids_filepath:
     with make_file_handle(out_ids_filepath, 'wt') as ids_outfile:
       ids_outfile.write('\n'.join(list(ids_set)) + '\n')
+
+
+def delete_requires(requires):
+  if not isinstance(requires, list):
+    requires = [requires]
+
+  for req in requires:
+    outputs = req.output()
+    if not isinstance(outputs, list):
+      outputs = [outputs]
+
+    for out in outputs:
+      fp = out.path
+      if os.path.exists(fp):
+        logging.info(f"[delete] Removed `{fp}`")
+        os.remove(fp)
diff --git a/scripts/reddit.py b/scripts/reddit.py
index d6793c6..a6ad4cc 100644
--- a/scripts/reddit.py
+++ b/scripts/reddit.py
@@ -5,7 +5,7 @@ import luigi
 from multiprocessing import cpu_count
 
 from dstc8_reddit.config import RedditConfig
-from dstc8_reddit.tasks import DownloadRawFile, ZipDataset
+from dstc8_reddit.tasks import DownloadRawFile, ZipDataset, BuildDialogues
 
 
 @click.group()
@@ -40,8 +40,18 @@ def download(workers, config, log_level):
 @click.option('-c', '--config', type=click.Path(dir_okay=False, file_okay=True, exists=True),
               default='configs/config.prod.yaml')
 @click.option('-l', '--log-level', default='ERROR')
-def generate(workers, config, log_level):
-  RedditConfig.initialize(config)
+@click.option('--small', is_flag=True,
+              help='If set, will use reduced storage by deleting intermediate data')
+def generate(workers, config, log_level, small):
+
+  extra_config = {}
+
+  if small:
+    extra_config.update(dict(delete_intermediate_data=True,
+                             max_concurrent_downloads=2))
+
+  RedditConfig.initialize(config, extra_config)
+
   print(RedditConfig())
 
   luigi.configuration.get_config().set('resources', 'max_concurrent_downloads',
@@ -51,6 +61,16 @@ def generate(workers, config, log_level):
   luigi.configuration.get_config().set('resources', 'max_concurrent_sample',
                                        str(RedditConfig().max_concurrent_sample))
 
+  if small:
+    for d in RedditConfig().make_all_dates():
+      luigi.interface.build(
+        [BuildDialogues(d)],
+        workers=workers,
+        local_scheduler=True,
+        log_level=log_level,
+        detailed_summary=True,
+      )
+
   result = luigi.interface.build(
     [ZipDataset()],
     workers=workers,