or more than 75 years, IAAO has provided objective, insightful advice to property assessment and taxation jurisdictions around the world. Promoting innovation and excellence in property appraisal, tax policy and administration, the IAAO will work with you to find solutions to complex property tax problems. Leveraging years of research, training and experience, IAAO is able to offer you specialized consulting and technical advice on a broad range of assessment issues. We will help you every step of the way with sound advice and a detailed road map.
Have Questions?
we have the answers!
ACCESS TO PROFESSIONALS
Access the expertise and experience you need to answer your questions and solve your assessing-related problems. No one is better qualified to provide consulting services to an assessor than an entire team of experienced and qualified assessors.
SUPPORT
AND ADVOCACY
Supporting jurisdictions with plans for improving assessment practices and providing project management, quality control and tax policy consulting services, PCS helps build political support for reforms that have been well implemented elsewhere.
WORLDWIDE
SERVICE PROVIDER
Professional Consulting Services of IAAO, LLC provides professional consulting worldwide, based on a deep and objective understanding of the assessment challenges confronting property tax practitioners.
AFFORDABLE
ACCESS
Because IAAO is a registered not-for-profit educational organization dedicated to improving standards of assessment practices, and providing appraisal education, fees for services are carefully considered.
THE PCS DIFFERENCE
What to Expect
Long-Term Impact
A project plan that will dovetail with your operational plan.
Accurate Reporting
Continual progress reports providing clear and accurate info.
Services and Project Delivery
A guarantee the services requested and delivered will meet or exceed IAAO standards.
Why Choose IAAO
Professional Consulting Services?
Developing countries need an internationally recognized leader and preeminent source for property appraisal and assessment administration to help set up property tax systems to provide funds needed to build roads and schools and help governments implement more effective policies, leading to better economic outcomes. IAAO is that source.
Professional Consulting Services of IAAO, LLC is the preeminent consulting organization for the mass appraisal industry including clients needing trusted expertise with a cost-effective approach to solve a variety of organizational, process, policy and appraisal issues. No other individual or organization in the industry has the history, longevity, level of mass appraisal expertise, consulting expertise, or level of trust that IAAO has earned with members and clients to date.
IAAO provides consulting services only at the request of the head of the agency involved. For further information on the scope and cost of such services, please contact us. All inquiries are confidential and without obligation.

Carrying out a revaluation of over 700,000 residential parcels in one appraisal in Northern Ireland on a new basis and after a gap of 30 years was certainly a challenge for the Government’s Valuation Agency. Strong international working relationships with IAAO were built up over a period of ten years culminating in the commissioning of IAAO Professional Consulting. The professional input of IAAO expertise to the training of staff and the leading technical advice at all levels to the project was instrumental in the recognized achievement of this major revaluation exercise.
Let IAAO’s expert professional assessment consultants tackle your business challenges. Working in close harmony with you, IAAO staff members and consultant teams will analyze all components of your most pressing issues, and provide solid, supportable recommendations.
real info

Your problem will be addressed by a team of IAAO staff and consultants who have been selected on the basis of their education, experience, contributions to the field and actual accomplishments. Our team’s objective is to provide solutions as quickly and efficiently as possible while maintaining the highest professional standards.

No one is better qualified to provide consulting services to an assessor than an entire team of experienced and qualified assessors. We provide professional consulting services worldwide, based on a deep and objective understanding of the assessment challenges confronting property tax practitioners for the past 75 years.

Because IAAO is a registered not-for-profit educational organization dedicated to improving standards of assessment practices, and providing appraisal education, fees for services are carefully considered. No other individual or organization in the industry has the history, longevity, level of mass appraisal expertise.
he IAAO is a nonprofit, educational, and research association. It is a professional membership organization of government assessment officials and others interested in the administration of the property tax. IAAO was founded in 1934, and now has a membership of more than 7,000 members worldwide from governmental, business, and academic communities.
Access the expertise and experience you need to answer your questions and solve your assessing-related problems. No one is better qualified to provide consulting services to an assessor than an entire team of experienced and qualified assessors.
Professional Consulting Services of IAAO, LLC provides professional consulting worldwide, based on a deep and objective understanding of the assessment challenges confronting property tax practitioners.
Supporting jurisdictions with plans for improving assessment practices and providing project management, quality control and tax policy consulting services, Professional Consulting Services of IAAO, LLC helps build political support for reforms that have been well implemented elsewhere, speeding the process by assisting individuals with varied technical backgrounds speak with one another, share technical concepts, and develop a consensus through pooled expertise.
EXPERIENCED ASSESSORS
The IAAO PCS has a team of qualified professionals who can evaluate your operations and find answers to your important questions.
Accessible
Affordable solutions to complex property tax problems.
Professional
Professional and sound advice with a detailed road map.
Industry Expertise
Solutions to a broad range of property assessment and taxation issues.
BECOME AN IAAO PCS CONSULTANT
The Technical Assistance Committee wants to harness your talent and is seeking individuals to serve the organization on committees and for special projects including technical assistance. The goal of this project is to create a list of those subject matter experts willing to share their skills, talents and abilities as a Expert Consultant or Project Leader. If you are interested please click on the button below to download the form and return to IAAO.
LET US BE YOUR
Assessment & Appraisal Partners

IAAO provides professional consulting services only at the request of the head of the agency involved.
Let IAAO’s expert professional assessment consultants tackle your technical challenges. Working in close harmony with you, IAAO staff members and consultant teams will analyze all components of your most pressing issues, and provide solid, supportable recommendations.
For further information on the scope and cost of such services, please download the brochure below or contact our program leader Larry Clark at 810-701-8130. All inquiries are confidential and without obligation.