diff --git a/build/build.py b/build/build.py
new file mode 100644
index 0000000..664a9a0
--- /dev/null
+++ b/build/build.py
@@ -0,0 +1,77 @@
+#
+# S. Van Hoey
+#
+# Build script for tdwg dwc handling
+#
+
+import io
+import csv
+
+from urllib import request
+
+
+class ProvidedTermsError(Exception):
+    """Inconsistency in the available terms Error"""
+    pass
+
+
+class DwcBuildReader():
+    
+    def __init__(self, dwc_build_file):
+        """Custom Reader switching between to raw Github or local file"""
+        self.dwc_build_file = dwc_build_file
+    
+    def __enter__(self):
+        if "https://raw.github" in self.dwc_build_file:
+            self.open_dwc_term = request.urlopen(self.dwc_build_file)
+        else:
+            self.open_dwc_term = open(self.dwc_build_file, 'rb')
+        return self.open_dwc_term
+
+    def __exit__(self, *args):
+        self.open_dwc_term.close()
+
+
+class DwcDigester(object):
+    
+    def __init__(self, term_versions, terms_config):
+        self.term_versions = term_versions 
+        self.terms_config = terms_config 
+        
+    def versions(self):
+        """iterator to provide the terms as represented in the term versions file"""
+        with DwcBuildReader(self.term_versions) as versions:
+            for vterm in csv.DictReader(io.TextIOWrapper(versions), delimiter=','):
+                if vterm["status"] == "recommended":
+                    yield vterm
+
+    def config(self):
+        """iterator to provide the terms as represented in the terms config file"""
+        with DwcBuildReader(self.terms_config) as configs:
+            for cfterm in csv.DictReader(io.TextIOWrapper(configs), delimiter=','):
+                yield cfterm
+                    
+    def _version_terms(self):
+        """get an overview of the terms in the term_versions file"""
+        return {term['term_iri'] for term in self.versions()}
+    
+    def _config_terms(self):
+        """get an overview of the terms in the terms config file"""
+        return {term['term_iri'] for term in self.config()}
+                    
+    def match_error_report(self):
+        """check if the prime dwc file and the humaninfo file provide corresponding terms"""
+        overload_versionterms = self._version_terms() - self._config_terms()
+        overload_configterms = self._config_terms() - self._version_terms()
+        if len(overload_versionterms) > 0 or len(overload_configterms) > 0:
+            vs_terms = ", ".join([term.split("/")[-1] for term in overload_versionterms])
+            cf_terms = ", ".join([term.split("/")[-1] for term in overload_configterms])
+            raise ProvidedTermsError("".join(["Terms only in term_versions.csv: ", vs_terms, 
+                                              ". Terms only in terms_config.csv: ", cf_terms]))
+    
+    def process_terms(self):
+        """parse the config terms towards the structure required for the HTML template"""
+        for term in self.config():
+            print(term)
+        
+