The property record already exists — it is just scattered across a permit office, an assessment roll, a violations database, and a licensing system that never talk to each other. ALKARTIS connects those Philadelphia records into intelligence you can search, cite, and put in front of a client.
Real estate is a business of specifics. The buyer wants to know whether the block is on the way up. The seller wants to know why the house two doors down closed higher. The investor wants to know what the city actually approved next door before they commit. Those answers are all sitting in public records — but pulling them means jumping between the L&I permit portal, the OPA assessment site, and a code-violations search, then trying to line up whether any of it refers to the same parcel or the same owner.
ALKARTIS does that connecting work once, for the whole city, and keeps every figure tied to its source. For real estate professionals working Philadelphia today, that shows up as three live tools.
BuildSignal is built on Philadelphia L&I permit records and the construction valuations declared on them. Instead of reading permits one address at a time, you see the pattern: where new construction and major alterations are clustering, how declared investment is trending on a block or in a neighborhood, and which parcels have recently pulled permits. That is the difference between telling a client "the area feels hot" and showing them that permitted investment on the surrounding blocks has been climbing — with the underlying permits to back it up.
A permit is a decision someone already made with their own money. Read enough of them on one block and you are reading the market's forecast before it shows up in comps.
Because every entry traces to the underlying L&I record, you are never asking a client to take your word for it. You are handing them the receipt.
TaxAssessmentIQ works from OPA assessment data. For an agent, that means you can speak precisely to how a property is assessed relative to comparable parcels — a question that comes up constantly with sellers who feel over-taxed and buyers pricing in carrying costs. Where an assessment looks out of line with the surrounding evidence, the tool helps frame the appeal case on sourced comparisons rather than a hunch. It is the same Philadelphia effective tax rate and assessment logic ALKARTIS uses across its property tools, so the numbers are consistent no matter which product you started in.
Location is the first thing every client asks about and the hardest thing to evidence. BlockWatcher pulls block-level activity — permits, violations, and other public-record signals around a specific address — into one view. When a buyer asks "what is the block really like," you can answer with what the record shows nearby rather than a vibe. When you are prepping a listing, you can get ahead of anything on the surrounding parcels that a savvy buyer's agent will surface anyway.
A lot of agents want one clean, client-facing document rather than three tools. That is exactly what ListingIQ's HomeBrief report is being built to do — package this property intelligence into a single branded brief you can hand to a buyer or seller. HomeBrief is in development and not yet live. Until it ships, the live path is to work in BuildSignal, TaxAssessmentIQ, and BlockWatcher directly and cite what you find.
Everything here follows the ALKARTIS discipline: data becomes information, information becomes intelligence, and every figure still traces back to a checkable Philadelphia public record. In a business where you put your license behind your advice, "here is where that number comes from" is not a nice-to-have — it is the whole point.
Philadelphia today. Every property tool here — BuildSignal, TaxAssessmentIQ, and BlockWatcher — runs on Philadelphia public records right now. More markets are on the roadmap and come online city by city, but we only claim what is live.
From the City's own records. BuildSignal is built on Philadelphia L&I permits and their declared construction valuations. Assessment figures come from OPA. Every number traces back to a checkable public source, so you can show a client exactly where a figure came from.
The ListingIQ HomeBrief report is in development and not yet live. Today you can work directly in BuildSignal, TaxAssessmentIQ, and BlockWatcher and cite what you find. When HomeBrief is ready it will package that intelligence into a single client-facing report.
API access is part of the Enterprise tier — there is no self-serve public API. If your brokerage or firm wants to pull ALKARTIS property intelligence into your own tools, talk to our team about an Enterprise engagement.
No. BuildSignal, TaxAssessmentIQ, and BlockWatcher are built for practitioners, not analysts. You search an address, a block, or an owner and get connected, sourced answers you can act on and hand to a client.
See how BuildSignal, TaxAssessmentIQ, and BlockWatcher fit your desk — or how a brokerage rolls them out across a team. Our team can walk you through it.