ListedSydney NSW, AustraliaEstate

Events By Alpha

Located at 238 Castlereagh Street in Sydney's CBD, Events By Alpha occupies a sophisticated urban estate with direct street frontage and access to the city's iconic skyline.

About Events By Alpha

Located at 238 Castlereagh Street in Sydney's CBD, Events By Alpha occupies a sophisticated urban estate with direct street frontage and access to the city's iconic skyline.

The venue commands views across Sydney's central business district, offering an elevated setting for ceremonies and receptions.

Modern architectural design and flexible interior spaces provide a polished backdrop for events of varying scales.

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September 2026

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Nothing is reserved until the venue confirms. A first note comes back within two business days.

“

My husband and I had the most amazing experience at Alpha! We recently held our wedding there and were assisted by Marta throughout the entire planning process.

Aidan Murphy · read the whole review on Google →

Capacity, rooms and facilities

Getting there

Nearest airport: SYD, 20 min by carAisle estimate

The spaces

Setting: Urban, historic, elegant

Food and drink

In-house catering: Yes

Venue highlights

Located at 238 Castlereagh St, Sydney NSW 2000, heart of Sydney's CBD
Google rating of 4.7/5 stars reflects consistent guest satisfaction
Flexible capacity accommodating 20 to 150 guests across multiple areas
Direct access to public transport with Central Station within walking distance

The wedding season

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PeakGoodShoulderOff season

A sample wedding weekend

See the day-by-day outline+

Use this as a starting point and adapt it to your bookings and guests.

6-9 months prior · day 01

N/AInitial venue inquiry and site inspection at 238 Castlereagh St

5-6 months prior · day 02

N/AConfirm booking and finalise contract terms with Dedes Group

3 months prior · day 03

N/AMenu tasting and catering selections; finalise event layout

Costs and booking details

Getting there: SYD · 15-20 minutes by taxi/rideshare; 40-50 minutes by train
Guests fly into Sydney Kingsford Smith Airport.
Typical total: $3,000-35,000+Aisle estimate
Pricing varies significantly based on day of week, season, catering selections, beverage options, and décor requirements. Minimum spend may apply. Contact venue directly for customised quote.
See the full figure+
AUD $3,000-35,000+ depending on guest count (20-150) and selected packages
Ceremony fee: Contact venue for ceremony-only ratesAisle estimate
A one-time licence and setup fee, paid to the venue.
Reception: $95-180+ / headAisle estimate
A seated dinner with wine and service, by headcount.
See the full figure+
AUD $95-180+ (subject to menu selection and beverage package)
Room rate: $120-400+ / nightAisle estimate
A standard room in the wedding window. Group rates on request.
See the full figure+
Sydney CBD hotels range AUD $120-400+ per night (venue does not provide accommodation)
Weather window: March, August – September, December
The 4 months the weather is kindest. Weather does not indicate whether a date is available.
Direct line: (02) 8279 2706
Answered by the venue in local hours.

Questions about the venue

What is the venue's maximum guest capacity?+

Events By Alpha accommodates up to 150 guests, with flexibility for smaller gatherings from 20 people.

Is the venue accessible by public transport?+

Yes. The venue is located on Castlereagh Street with Central Station accessible within a short walk, plus multiple bus routes serving the area.

Can the space be configured for both ceremony and reception?+

The estate's flexible layout allows for ceremony setup and reception dining, though specific configurations should be confirmed directly with the venue.

What catering options are available?+

Contact Events By Alpha directly via their website at https://dedesgroup.com.au/venues/alpha-dining/?utm_source=google&utm_medium=organic&utm_campaign=gbp for current catering packages and menu options.

Are there parking facilities?+

Street parking and nearby commercial car parks serve the Castlereagh Street location. Specific parking packages should be discussed with the venue coordinator.

Before you keep looking

Could this be your venue?

Ask about your plans, pricing and availability. You do not need a fixed date yet.

Still deciding? Elena is Aisle’s AI wedding planner. Give her a month and a guest count and she will forecast the budget, work out how your guests would travel, and put a first plan on paper. No account needed.

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Last updated 13 August 2026

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Sources and booking notes

Confirm your dates, guest numbers, room arrangements and inclusions with the venue before booking. An enquiry does not reserve a date. Figures labelled Aisle estimate are modelled from regional rates and public sources; they are not venue quotes.

Venue wedding information

Sources for individual venue facts

In-house catering: Yes
“A carefully crafted menu from our very own Alpha restaurant and our beautifully designed spaces will make for the perfect day.”
Read the source for in-house catering
Setting: Urban, historic, elegant
“Nestled behind the remarkable landmark of 238 Castlereagh Street in Sydney City, lies Events By Alpha– 3 level unique event spaces that seamlessly blends old-world charm with modern sophistication.”
Read the source for setting