Mathew St Guillaume

Mathew St Guillaume

Director / Sales Executive at Boutique Realty Perth
  •   5   (14 reviews)

Mathew's sales performance at a glance

See how Mathew has performed in the last 12 months on RateMyAgent*

6
Reviews
49
Median days on market
8
Properties for sale
51
Sold properties
$2.1m
Average sale price
$105.6m
Total sales value

*Includes all properties sold (last 12 months) as lead and supporting agent and published on ratemyagent.com.au. It may not be complete and can exclude off-market, private sales and undisclosed pricing and sold dates. Contact agent for full sales history.

About Mathew

Mathew is a Real Estate Agent at Boutique Realty Perth. They have 14 verified reviews with an average rating of 5 stars. They currently have 8 active property listings and 51 sold property listings over the past 12 months worth $105,566,088.

Mathew's reviews

  5  
Mathew has 14 reviewsacross 7 different locations, showing 6.
Review Mathew
Mathew's qualities as told by our client reviews: hard-working, local expert, clear communication.
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Seller review
Boutique Realty provided exceptional service, Mathew St Guillaume achieved an amazing sale price.
21 days ago
Boutique Realty provided exceptional service, Mathew St Guillaume achieved an amazing sale price.

Mathew is genuine, friendly, and very easy to deal with, he and his 5 star team provided a truly professional service. Mathew recommended pre-sale refurbishing works, and staging to ensure my home was beautifully presented to attract multiple buyers. The seamless sale process was executed with diligence, speed, and a strong commitment to achieve the best sale price possible. Mathew delivered an incredible sale price that was significantly in excess of my expectations. I would highly recommend engaging Mathew, he is a delight to deal with.

Buyer review
Professional
21 days ago
Professional

Mathew has an excellent knowledge of real estate in the Floreat area and located a property perfectly suited to my daughters needs. I would not have considered the property that we purchased unless Mathew had arranged a viewing for us. Mathew and his team were all extremely helpful and professional throughout the purchasing process.

Seller review
Outstanding Agent with an Exceptional Team..
about 1 month ago
Outstanding Agent with an Exceptional Team..

Working with Boutique Realty Perth was exceptional. The team operated with precision, speed, and clear strategy from day one. My property went from first contact with Mathew to listing within a week and an accepted offer in 10 days. Communication was consistent and professional throughout. Mathew was calm, knowledgeable, and decisive, making the process effortless. The team delivered outstanding marketing and a seamless, results-driven experience I confidently recommend.

Seller review
Seamless Process & Record Price
about 1 month ago
Seamless Process & Record Price

An exceptional experience from start to finish. The entire process was handled with a high level of professionalism, discretion and expertise. The strategy behind the off market approach clearly paid off, delivering a fantastic result that was a record price in our area, without the stress of a full public campaign. Couldn’t be happier with how smoothly it all came together. Highly recommend to anyone considering selling. I understand completely why Mathew is number one selling agent in his area. Five stars all the way.

Seller review
Smooth & Stress-Free Sale
5 months ago
Smooth & Stress-Free Sale

Matthew was professional, responsive, and knew the Floreat market well . He is hard working , communicate clearly and honestly . The selling process was smooth and stress-free, and we achieved our desired outcome. Highly recommended .

Seller review
Exceptional
5 months ago
Exceptional

Mathew and his team are professional, very knowledgeable of the local area and extremely supportive of the seller. We wanted a quick sale and Mathew came straight onboard, setting everything up quickly and professionally. Samantha and the team were always there to support us in a very caring and generous manner. We really felt cared for. Beyond this personal care and support, Mathew guided us to get the most out of our sale, I recommend you listen to what he says, he was spot on. Even considering a ‘hot’ market, Mathew achieved above and beyond, with multiple high offers and the agent we bought our next property from said it was one of the smoothest and quickest sales they had experienced. What better recommendation than from another agent. If we sell again, we would have no hesitation in using Mathew and the team at Boutique. Highly recommend you speak with them before deciding on an agent.

Show all 14 reviews
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Mathew's properties

Mathew has 8 properties for sale and sold 51 properties in the last 12 months, showing 4, sorted by most recent activity

SoldMay 18, 2026
Price not available
11 Raphael St
Subiaco WA 6008
3
2
2
House
For Sale
OFFERS
39 Coral Tree Avenue
Subiaco WA 6008
4
2
2
House
Under Offer
UNDER OFFER BY MATHEW ST GUILLAUME
51 Orrel Avenue
Floreat WA 6014
4
2
4
House
For Sale
PRICE GUIDE MID $900K
6/2 Burvill Drive
Floreat WA 6014
2
2
2
Apartment
Show all 59 properties

Mathew's sold properties

Mathew has sold 51 properties in the past 12 months, showing 4.

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Property imageAddressBedroomsBathroomsCarparksProperty TypeClosing PriceDate Sold
11 Raphael St, Subiaco, WA, 6008
11 Raphael St
Subiaco WA 6008
3
2
2
HouseUndisclosed PriceMay 18, 2026
7/7 George St, Rockingham, WA, 6168
7/7 George St
Rockingham WA 6168
1
1
2
UnitUndisclosed PriceMay 4, 2026
14A Zamia Street, Mount Claremont, WA, 6010
14A Zamia Street
Mount Claremont WA 6010
4
2
2
HouseUndisclosed PriceApr 27, 2026
157 Petra Street, East Fremantle, WA, 6158
157 Petra Street
East Fremantle WA 6158
3
2
2
HouseUndisclosed PriceApr 27, 2026

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