Plot owners rarely live near the land they bought. Every question — is my plot still clear, where did the maintenance money go, when does the road get tarred — becomes a phone call to the builder's sales desk. This replaces that desk.
Built against Sandesh Nagari 7: a real 823-plot, 58-acre NMRDA-sanctioned project at Rui & Banwadi, on the Wardha Road–MIHAN corridor, Nagpur.
Live demo → · Go + Postgres + React · runs at ₹0/month
Sign in as office@shivrudragroup.in (builder) or rohit.deshmukh@example.com
(owner), password sandesh-demo-2026 — or just browse /explore, no account needed.
| Sees | Account | |
|---|---|---|
| Guest | The layout, what's available and at what price, site progress — and can leave an enquiry | None |
| Owner | Their plot, dues, documents, the society ledger, their own query threads | Yes |
| Builder | All of it, plus the admin portal | Yes |
Owners never self-register: the site office adds the plot and invites the owner, and the invite binds that person to that plot on first sign-in. Auth is Argon2id with short-lived JWTs and single-use refresh tokens — no third-party auth, no per-user cost.
Every guest enquiry lands in the builder's leads board with the plot they were looking at. That's the reason a builder shares the public link at all.
| Their plot — the bill shows its working | Society fund — append-only |
|---|---|
 |
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| Site progress | Queries, with a visible SLA clock |
|---|---|
 |
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| Dashboard | Leads from guests |
|---|---|
 |
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Go 1.23 on the standard library router · Postgres 16 · React + TypeScript + Tailwind · S3-compatible object storage.
Four Go dependencies — pgx, golang-jwt, uuid, x/crypto. SigV4 request
signing is ~100 lines against the stdlib rather than the AWS SDK.
93.8% test coverage, store and handler layers against a real Postgres — a
mock will happily agree a query filters by builder_id when it doesn't. They
caught a route conflict that would have stopped the server booting, and a
security pass caught a cross-builder data leak —
both written up here.
The fund ledger is append-only. A correction writes a reversal row linked to the original. When an owner disputes a figure, the builder shows the history rather than a number that quietly changed.
The layout map carries no owner details. Names and numbers appear only on a plot's own page, to that plot's owner and the builder.
A bill snapshots what it was computed from — rate, area, sector. Maintenance is a one-time charge priced per square foot and set per sector, so changing a rate never re-prices an invoice already issued.
make up && make seed && make run # API on :8080
cd web && npm install && npm run dev # UI on :5173make seed loads the full project and prints demo logins.
Architecture — module pattern, and an honest list of what will need work as this grows. Deploy it free — Supabase + Render + Cloudflare, no card.