Profile · Civic Technology · Boston
Andrew Kieve
He named his company after Ptolemy. Two thousand years later, he is still drawing maps of things people overlook - this time, the city block.
ANDREW KIEVE / CO-FOUNDER, CEO
ANDREW KIEVE / CO-FOUNDER, CEO
Most cities are sitting on a fortune and do not know it. Not in their treasuries - in their databases. Tax rolls in one office, code violations in another, deeds and water shutoffs and police calls scattered across departments that rarely talk. Andrew Kieve built a company on a single stubborn idea: the answer to neighborhood decline is already inside the building. Somebody just has to connect it.
That somebody is Tolemi, the Boston civic-technology firm Kieve co-founded in 2013 and now runs as CEO. Its flagship platform, BuildingBlocks, is a cloud tool that pulls property and ownership records from a tangle of siloed sources, runs machine learning over the pile, and hands a city back something it has never had: a single, searchable, mappable picture of every parcel it governs. Where a vacant house is. Who really owns it. Which block is quietly tipping toward blight before the blight arrives.
Kieve does not sell software so much as he sells sight. The pitch is almost philosophical, and he has refined it down to one line.
It is a quieter ambition than most founders chase. There is no consumer app, no viral loop, no billion-user dream. The customer is a code-enforcement officer, a housing director, a mayor's chief of staff. The product is patience rendered as software. And the stakes - whether a family keeps a home, whether a corner block recovers or collapses - are about as real as software stakes get.
Before it was Tolemi, the company was called OpportunitySpace. Same mission, plainer name: take the property data cities already owned and make blight visible. The team spent its early years in the unglamorous trenches of municipal IT - the world of legacy systems, PDF reports, and data that technically existed but practically did not.
The turn came in the winter of 2017, when the company joined Y Combinator's W2017 batch. YC put in its standard check - $120,000 for 7 percent - and three months of pressure. President Sam Altman noted that the team impressed him, and pointed to something larger stirring underneath: government, long allergic to startups, was finally warming to them. OpportunitySpace came out the other side with a new product, BuildingBlocks, and a new name.
The name is the tell. Tolemi is a nod to Ptolemy, the ancient Greek polymath whose work helped invent cartography. It is a founder quietly announcing his thesis: this is a mapping company. Not of coastlines and continents, but of the neighborhood - the most data-rich, least understood map in any city.
By the time of the rebrand, the company was already live in 14 cities, from Pittsburg, Kansas to Philadelphia, with a pipeline of nearly 40 more. The unsexy bet was working. Cities, it turned out, were desperate for exactly the thing nobody had bothered to build them.
Strip away the jargon and the tool does something almost embarrassingly practical. It aggregates - law enforcement records, federal data, tax databases, ownership filings - and then it makes the mess legible. Officials get situational awareness: which properties are problems, which interventions might work, which trends are forming on which streets. The machine learning is not there to dazzle. It is there to answer the question a tired housing director asks at 9 a.m.: where do I send people today?
That practicality is why the customers are unusual. Tolemi's clients are not startups or enterprises but governments - the slowest-moving buyers in the economy, and the ones with the most at stake. The use cases read like a tour of the work cities find hardest: housing code compliance, cross-agency collaboration, neighborhood revitalization, protecting affordable housing, fighting predatory investment, squeezing public value out of publicly owned land.
In 2020, that platform sat underneath a wave of New York Attorney General strategic-housing grants - over $8 million awarded to cities to build new programs, with places like Syracuse and the broader Western New York region using Tolemi to turn grant money into action on the ground. The software was no longer a curiosity. It was infrastructure.
In 2023, Kieve walked onto a bigger platform than any city hall. At the Clinton Global Initiative's annual meeting, Tolemi and the nonprofit Accelerator for America announced a joint commitment: give 11 American cities no-cost access to Tolemi's analytics and a peer-learning cohort, all aimed at the affordable-housing crisis.
The roster spanned the country and the political map - Kansas City, Albuquerque, Austin, Birmingham, Chicago, Dayton, Lansing, Philadelphia, San Diego, Tampa, and Tucson. The shared goal: preserve and build affordable housing, prevent families from being displaced, push back on predatory investment, and wring community benefit out of public land. It was the OpportunitySpace mission from 2013, scaled to a national stage, with a former U.S. president's convening power behind it.
Kieve did not arrive in govtech by the obvious door. He studied international relations at Stanford - the discipline of how systems and institutions collide - then earned an MBA at IESE Business School in Spain. Between and around the degrees came a stint as a consultant at Innosight, the innovation and growth-strategy firm co-founded around the ideas of Clayton Christensen.
It is a resume built for someone who would eventually try to sell disruption to the least disruptable customer on earth: the government. International relations taught him institutions. Consulting taught him how incumbents resist change. Tolemi is where both lessons get applied at once - convincing a 200-year-old bureaucracy that the future is hiding in its own filing cabinet.
More than a decade in, the bet has aged well. Civic tech, once a fringe, is now a field. Cities that would not return a startup's call in 2013 now line up for cohorts. And the quiet thesis - that you do not need new data, you need to finally read the data you have - looks less like a pitch and more like common sense.
Founders are taught to move fast. Government is built to move slow, on purpose - procurement cycles, public records law, budget seasons that turn a quick yes into an eighteen-month maybe. Most software companies treat the public sector as a market to avoid. Kieve treated it as the whole point. The decision shaped everything about how Tolemi grew: not a hockey-stick consumer launch, but a steady accumulation of cities, each one a reference for the next.
It is a model that rewards a particular temperament. You have to enjoy the unglamorous middle of the work - the data cleaning, the integration with a clerk's twenty-year-old system, the patient explaining of what a machine learning model will and will not do. There is no shortcut around trust, and trust with a city government is earned in years, not demo days. Tolemi's durability suggests Kieve made peace with that math early.
The payoff is a kind of moat most startups never get. Once a city's departments are wired into BuildingBlocks and its staff have learned to lean on the maps, the platform stops being a vendor tool and starts being the way the work gets done. Switching costs are not a growth hack here. They are the natural result of solving a problem deeply enough that the customer reorganizes around the solution.
There is a civic dimension too, and Kieve does not shy from it. The same map that flags a slumlord's portfolio can also protect a tenant. The same model that spots disinvestment early can route a grant before a block tips. In a sector where the buyer is the public and the stakes are people's homes, the line between a feature and a public good gets thin. That blur is not a flaw in Tolemi's story. It is the reason the company exists.
You do not need new data. You need to finally read the data you already have.