Building your Spatial Data Infrastructure.

We build the geospatial data infrastructure for the quiet businesses of the world.

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

Est. 2025

What we offer

At Thorn Street, we build mapping software for public agencies, private organizations, and infrastructure teams. Location-based data powers infrastructure, planning, and operations, but making it usable takes specialized engineering. We source the data, build the systems, and turn it into tools your team can use.

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Data Sourcing & Acquisition

Get the right data, from the right place.

Public records, commercial providers, drones, sensors, internal systems. We help identify the right source for the question and coordinate acquisition when collection is required.

Source evaluation
Vendor & partner coordination
Field / drone capture via partners
Validation & QA

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

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Pipelines & Infrastructure

Where the data lives and how it moves.

Spatial databases, ETL pipelines, and integrations that turn raw inputs into clean, reliable systems. Built for the real handoffs between field teams, analysts, and end users.

Spatial database design
ETL pipelines
GIS integrations
Automated QA / QC

thorn-street-etl v1.2.0

pid 4847

running · 00:03.2s

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Analysis & Intelligence

Ask your data a question.

Spatial analysis and LLMs working against your structured data. Patterns, risks, and answers that used to take a week happen in a conversation.

Spatial analysis
Risk & portfolio modeling
Natural language queries
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

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Maps, Dashboards & Delivery

Outputs your team will actually use.

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

Web maps & data portals
Dashboards
APIs
Clean dataset handoffs

water-dist.web.app

hydrant valve

32.7157°N 117.1611°W · z 17

25 m

Have a project that needs spatial data?

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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