a better, more streamlined build process.


a seamless extension of your team.


experts in the programs you already use.



Who We Are

Building Services International (BSI) is a dynamic and highly experienced residential drafting, estimating, and scheduling service provider as a residential architectural services firm delivering excellence across the globe.

Our business processes are streamlined through an unparalleled international network of offices throughout Australia, South East Asia, and North America.

BSI Staff working on rendering project
BSI 3D Rendering of Home Interior
BSI 3D Rendering of Residential Home
BSI Staff working on drafting project



What We Do

At BSI, more than 130 qualified professional drafters, architects and civil engineers are driven to provide accurate, creative, and innovative drafting, visualization, and estimating services for BSI’s residential building and real estate development clients worldwide. Our highly regarded operating model offers BSI’s expertise as an extension of our clients’ business. One of our residential architectural rendering services firm’s key strengths is to understand your requirements and then work in tandem as part of your business.

When you contract your design needs, a dedicated BSI team is ready immediately to partner with you and deliver exceptional quality work to meet fast turnaround times, with a competitive cost edge. From sketches, site plans, and scheduling, to photo-realistic 3D rendering, our team’s efficiency, and attention to detail means you enjoy total peace of mind – no matter how large or small the job.

From our thriving and growing offices in Australia, the PhilippinesSingapore, and the USA, committed BSI teams to make use of the very latest software to deliver precision and style for every project.

BSI is fully versed in all regional building codes. Our residential architecture firm’s knowledge of construction methods and regional or country requirements is second to none. All projects undergo stringent in-house checking to meet BSI’s uncompromising standards. BSI offers one of the most professional and accurate global drafting services on a successful working partnership basis, meeting tight time deadlines and delivering valuable cost efficiencies.



Reliable, accurate and cost-effective outsourced drafting services.


3D Rendering

Bringing your project to life with realism, depth, and movement.


Scheduling & Estimating

Fast and accurate quantity surveying for all your estimating and scheduling requirements.




We have worked together with BSI for many years as they have always provided us with a highly professional, residential design and drafting service. From early sales sketch designs through to construction stage working drawings, BSI’s ability to continually produce drawings to a high standard, within strict time frames, enables BGC Residential to offer its customers a first class service.”

Andrew Brennan
Drafting & Compliance Manager, BGC

BSI have been an integral part of our Zac Homes drafting team since 2016. They have provided an on-going professional drafting service that caters for our unique range of projects from initial concept design through to construction working drawings. The team at BSI is always willing to go the extra mile to complete jobs on time – no matter how big the project. The staff are polite, professional and committed to providing a high-quality service for every job. Thanks, and keep up the great work.”

Charlie Vella
Design & Drafting Manager, Zac Homes

John and his team have been a real pleasure to work with. He and his entire team have been incredibly responsive to our needs, and they did an excellent job quickly learning the particulars of our company drafting standards. The only trouble we have with them is getting them enough work to do for us! I would highly recommend their services.”

Tom Hammond
Visual Media Director, TOLLARCHITECTURE, A Division of Toll Brothers

It’s been a pleasure working with BSI over the last 2 years. Hudson Homes has been able to build a strong communication line which has allowed our business to deliver our projects on time to our customers. BSI have assisted in preparing plans for all stages of drawings throughout our process. They have also assisted in creating master plans, with all work being delivered at a high standard. BSI have been played a significant roll in the overall success of the Hudson Homes Drafting team.”

Daniel Juarez
Drafting Manager, Hudson Homes

We have been working with BSI for many years now, and find the system works well for all. It is great working with Catherine and the team as we have a good relationship. BSI understand our job roles and procedures.”

Elaine Baxter
Scheduling Administrator, BGC

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