How to write a PTAM: 11-step property appraisal guide (NBR 14653)
Free property appraisal guide: the 11 stages of a PTAM, the Brazilian market value opinion report prepared under the ABNT NBR 14653 standard, from property identification to signature.
What you will learn
A PTAM (Parecer Técnico de Avaliação Mercadológica) is the report in which a licensed professional in Brazil substantiates the market value of a property. This guide walks through its 11 stages, in the order the report is built, with what the ABNT NBR 14653 standard requires at each one. Read it online, step by step, or download the full PDF.
Introduction
Introduction
The property appraisal process
A property appraisal determines the value of a real estate asset in a specific context, from the standpoint of the market. This guide gives a comprehensive…
Step 1 of 11
Cover & Identification
Formal identification of the document
The cover is the first element of the PTAM and serves to formally identify the work, gathering the information that lets the reader understand at a glance…
Step 2 of 11
Requester & Purpose
Who requested it and why
This step establishes who requested the appraisal and why — decisive information, since the purpose can influence the methodological approach and the…
Step 3 of 11
Property Details
Identifying and describing the asset
Describing the property is the basis of the entire appraisal. The more precise and detailed the identification, the more reliable the final result.
Step 4 of 11
Technical Features
Physical and construction survey
Carried out during the inspection, the technical survey is one of the pillars of the appraisal: it documents the property's real condition at the moment it…
Step 5 of 11
Infrastructure & Location
Urban and locational analysis
Available infrastructure and the surroundings strongly influence value. Areas well served by urban services and amenities tend to command higher prices.
Step 6 of 11
Market Analysis
Behavior of the local market
This section places the subject property within its regional market, identifying trends and factors that influence values — and showing that the appraiser…
Step 7 of 11
Value Research
Collecting and treating samples
Value research is the heart of the comparative method: the systematic collection of data on properties similar to the subject, available on the market or…
Step 8 of 11
Value Definition
Consolidation and market value
This is when the appraiser, drawing on all the work done, applies professional judgment to reach the property's market value.
Step 9 of 11
Methodology
Appraisal method and rationale
The choice of methodology is a technical decision by the appraiser, based on the property's characteristics, the availability of data and the purpose. ABNT…
Step 10 of 11
Appendices & Documentation
Photos, maps and evidence
The appendices are the body of evidence that supports the PTAM's conclusions. A well-organized photographic and documentary dossier is essential to the…
Step 11 of 11
Signature & Responsibility
Formalization and technical statements
The final step formalizes the document with the responsible professional's signature, the mandatory statements and the information that gives the report…
Tools
PTAM Tools
Comparison of digital solutions
The market offers different solutions for preparing PTAMs. Here are the main options and their characteristics.
From the guide to a finished PTAM, on one platform
Valor 360 guides every stage of the PTAM under NBR 14653: it finds comparables, adjusts them, maps the surroundings and delivers the report as a PDF ready to sign.