Spatial data infrastructure.

Databases, pipelines, and applications for the quiet businesses of the world.

SAM.gov · CA Small Business32.7157°N 117.1611°W

The challenge

Spatial data is the backbone of infrastructure, planning, and operations - but it's hard to manage well. Standardization, system integration, quality control. It's specialized engineering that needs to get done right. The question is who's going to do it, and how.

Technical solutions

We only take on work that interests us and aligns with our mission. We approach every problem from first principles, working to understand things thoroughly before deciding how to solve them. Every project is an opportunity to learn something new.

Data Infrastructure

Messy data in, clean data out. Systems that organize, standardize, and serve your data when you need it.

  • Spatial database design
  • GIS integrations
  • Data pipelines
  • QA/QC
survey_FINAL_v2.shpcarorurcexport (1).kmlarchive.zipdata_backup_old.gpxarchive.zipsurvey_data.xlsxbackup_finalnotes.transicnotesexport_v3export_v3parcel_idgeomsurvey_datearea_sqft1001POLYGON2023-12-011,2001002POLYGON2023-12-212,0001003POLYGON2024-01-313,5001004POLYGON2024-01-302,5001005POLYGON2024-01-311,8001006POLYGON2024-01-312,5001007POLYGON2024-02-054,1001008POLYGON2024-02-121,9501009POLYGON2024-02-143,2001010POLYGON2024-02-202,7501011POLYGON2024-03-011,600

Automation

Manual work out, automated workflows in. Tools that handle the repetitive stuff so your team doesn't have to.

  • Report generation
  • Spatial analysis
  • Data extraction
thorn-street-etl v1.2.0config: survey.yml● Scanning ./data/incoming/ 23 shapefiles 147 GPX files 8 DWG files● Validating geometries...178/178✓ 178 valid⚠ 3 repaired(self-intersection)● Transforming coordinatesEPSG:2230EPSG:4326(NAD83 CA VI → WGS84)181/181✓ All features transformed● Processing attributesStandardizing field namesdoneParsing survey datesdoneCalculating parcel areasdone● Writing to PostGISDatabase:survey_dataTable:public.field_points_20242,847✓ 2,847 features inserted

Visualization

Give your clients something better than PDFs. Interactive maps, dashboards, and forms they can access anywhere.

  • Data portals
  • Web maps
  • Dashboards
Web Map

AI

LLM integration with spatial workflows. We'll find ways to make your data easier to access and work with.

  • Natural language queries
  • Automated reports
  • Change detection
survey_data @ postgisclaudeWhat changed near the River Rd sitesince we started the project?Comparing 500m buffer since Jan 2024.OWNERSHIP12 transfers · 3 subdivisions · 1 mergerLAND USE4 parcels rezoned (R-1 → MX-2) 2.4 ha-117.154, 32.739 → -117.147, 32.745EPSG:432647 parcels affected, 1,247 rows scanned.Write that up as a memo for the client.

How we work

1

Discovery

We discuss your challenge and timeline. Clear assessment of fit.

2

Proposal

Fixed scope and price. No surprises or scope creep.

3

Delivery

Weekly updates and working demos. Your deadlines are real.

TS

About Thorn Street

Thorn Street Company LLC is a geospatial engineering firm, specializing in spatial data infrastructure. We build the backend systems that make geospatial data usable: databases, pipelines, and web applications.

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San Diego, CA 92104
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