Spatial data infrastructure.

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

Schedule a technical review See how we work

SAM.gov · CA Small Business · 32.7157°N 117.1611°W

Est. 2025

The challenge

Spatial data is the backbone of modern infrastructure, planning, and operations. Making it usable is specialized engineering that’s easy to get wrong. Standardization, integration, quality control: each one takes careful design. The question isn’t whether the work needs doing. It’s who’s going to do it right.

Technical solutions

We take on work that interests us and fits our mission. Every project is approached from first principles: understand the problem deeply, then decide how to solve it.

01 / 04

Data Infrastructure

Messy data in, clean data out.

Systems that organize, standardize, and serve your data. Built for the real handoffs between field teams, analysts, and end users.

Spatial database design
GIS integrations
Data pipelines
QA / QC

ingest → postgis

survey_FINAL_v2.shp

export (1).kml

notes.txt

archive.zip

parcel_ids.csv

untitled1.dwg

JUNE_files/

data_backup_old.gpx

parcel_id	geom	survey_date	area_ac
1001	POLYGON	2024-09-12	0.27
1002	POLYGON	2024-09-12	0.41
1003	MULTIPOLYGON	2024-09-19	1.14
1004	POLYGON	2024-09-19	0.33
1005	POLYGON	2024-10-02	0.22
1006	MULTIPOLYGON	2024-10-02	0.86
1007	POLYGON	2024-10-15	0.48
1008	POLYGON	2024-10-15	0.31

mixed sources→parcels

epsg:2230

02 / 04

Automation

Workflows that run themselves.

Tools that handle the repetitive work so your team doesn’t. Overnight batch processing puts answers on the right desk by morning.

Report generation
Spatial analysis
Data extraction

thorn-street-etl v1.2.0

pid 4847

running · 00:03.2s

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Visualization

Give your clients something better than PDFs.

Interactive maps, dashboards, and forms your clients can open from any browser. Production-ready, so they actually get used.

Data portals
Web maps
Dashboards

water-dist.web.app

hydrant valve

32.7157°N 117.1611°W · z 17

25 m

04 / 04

Ask your data a question.

LLMs integrated with your data, schemas, and processes. Analysis that used to take a week happens in a conversation.

Natural language queries
Automated reports
Change detection

parcels @ postgis

Operator

What changed near the River Rd sites since we started?

Assistant

Ownership12 transfers · 3 subdivisions

Land use4 parcels R-1 → MX-2 · 5.9 ac

Scope47 parcels · 1,247 rows

47 ms · 1,247 rows

claude · postgis

How we work

Discovery

We discuss your challenge, timeline, and constraints. An honest assessment of whether we’re the right team.

Proposal

We agree on the right structure together: fixed scope, phased, or ongoing.

Delivery

Weekly updates and working demos. Your deadlines are real, and we treat them that way.

About Thorn Street

Thorn Street Company LLC is a geospatial engineering firm, specializing in spatial data infrastructure. Our ethos is a first-principles approach to every problem. We work to understand it thoroughly before deciding how to solve it, whether that means a database, a pipeline, or a web application.

More about the firm