J & S Castlehow

Master Entity
ConstructionInfrastructurePublic Safety & Security
Total portfolio
$3,672,968
Contracts won
29
Latest win
Apr 2026
MomentumRising+64%12mo vs prior 12mo
Buyer concentration45%from (inactive) Department of Finance
Expiring soon1contracts up for recompete

Recompete radar

1 expiring in 12mo

Contracts nearing the end of their term. Some may go back out to tender when they expire.

Provision of CCTV System for Albany Entertainment Centre by J & S Castlehow Electrical Services
Expires in 7mo$157K
Arts and Culture Trust

Contract history

No contracts match those filters.

Where the revenue comes from

top 5 buyers
(inactive) Department of Finance$1.7M
45% of portfolio15 contracts
(inactive) Department of Treasury and Finance - Public Works$576K
16% of portfolio7 contracts
Department of Housing and Works$529K
14% of portfolio1 contract
Arts and Culture Trust$390K
11% of portfolio3 contracts
Programmed Facility Management$373K
10% of portfolio2 contracts

Open tenders matching this supplier's work

HV Blue-Red Feeder 11kV Infrastructure Upgrade – James Cook University Townsville Campus

Closes: Oct 05, 2026

Infrastructure

Design and Construction of Main Electrical Switchboard at Bathurst Wastewater Treatment Works

Closes: Oct 20, 2026

Water & Sanitation

Infrastructure Upgrades at RAAF Edinburgh Base, South Australia

Closes: Oct 06, 2026

Defense & Aerospace

Switchboard Upgrade for City Offices – Contract 2744

Closes: Oct 16, 2026

Construction

Mechanical Electrification Works at Frankston Arts Centre & Peninsula Aquatic Recreation Centre

Closes: Oct 14, 2026

Construction

University of Southern Queensland Maintenance Services for Electrical, Mechanical and Electro‑Mechanical Infrastructure – Toowoomba, Ipswich, Springfield & 2 Satellite Sites

Closes: Oct 22, 2026

Infrastructure

Street Lighting Upgrade — Hume Region (Department of Transport and Planning)

Closes: Oct 21, 2026

Infrastructure

Infrastructure Upgrades and Facility Refurbishment at Borneo Barracks, QLD

Closes: Oct 12, 2026

Construction

DSTG Edinburgh Building Refurbishment – Architectural, Structural and Services Upgrades, South Australia

Closes: Oct 08, 2026

Construction

Electrical Installation and Maintenance Services (EOI Stage 1) — Mount Barker District Council — 3‑Year Agreement

Closes: Oct 16, 2026

Infrastructure

Street Lighting Relocation for New Shellharbour Hospital Enabling Infrastructure

Closes: Oct 27, 2026

Infrastructure

Department of Education – Major Upgrades at Karrinyup Primary School

Closes: Oct 22, 2026

Construction

Who they are

Install and upgrade electrical systems, including switchboards, power distribution, generators, lighting, CCTV, fire and intruder alarm and PA systems, and routine testing for government schools, prisons, hospitals and regional public facilities in Western Australia.

AI summary · inferred from awarded contracts

Includes consolidated data for: J & S Castlehow Electrical Services

Live Feed

Tenders and contracts,
consolidated and enriched.

We pull tenders and awarded contracts from government portals around the clock. Each one is categorised, enriched, and searchable shortly after it's published.

Multiple portals, single feedAusTender, all state portals, Tenderlink, and more. Scraped, categorised, and enriched automatically.
Categorised and enrichedEvery tender and contract is tagged by category, agency, value, and region.
Updated around the clockNew opportunities appear within hours of being published. Never stale.

Smart Recommendations

Matched to your business,
automatically.

Our AI reads every new tender and contract, and recommends the ones relevant to your business in real time. No searching required.

AI and keyword matchingSemantic AI understands your business. Keyword alerts catch exact matches.
Delivered to your inboxNew matches emailed daily. Tenders, contract awards, and supplier wins.
Supplier and contract watchFollow any supplier or category. Get alerted when new contracts are awarded.

Your Dashboard

Configure once,
run on autopilot.

Set up your alerts, watchlists, and preferences from your dashboard. GovMarket works in the background so you can focus on winning work.

Custom alert profilesCreate up to 10 alert profiles.each with its own keywords, categories, and regions.
Competitor trackingAdd suppliers to your watchlist and monitor their wins across government.
Agency spend and pricingBenchmark pricing, track agency budgets, and understand where government spends.

GovMarket AI

Search tenders and contracts
in plain English.

Find tenders, look up suppliers, check who won contracts, and explore agency spend. Just type what you need.

Get Started

Win more government work.

Join suppliers across Australia using GovMarket to find and win contracts.

7 days free, then $49.99/AUD per month

You're In — Free Trial Activated

You now have full access to GovMarket Premium for 7 days. You’ll be charged at the end of the trial unless you cancel.

  • Tell Us What You Do — We'll surface the tenders that are most relevant to your business.

Not ready to trial?

See how GovMarket works and decide if it's a fit for your business.