Property diagnosis: how much does it really cost in 2025?

Excerpt:
Discover the real cost of property diagnostics in 2025 and how to save money on your reports before selling.

Understanding property diagnosis prices

The full property diagnostic cost depends on several factors: surface area, age of the building and its location. In Massy, Palaiseau or Chilly-Mazarin, prices average between 250 and 600 euros. The older or larger the property, the more diagnostics are required—lead, asbestos, electricity, gas, termites and more—all impacting final costs.

The DPE: a decisive factor

The energy performance certificate (DPE) is now key in every sale or rental process. In 2025, its price ranges from 100 to 250 euros depending on surface and complexity. It directly influences property value. At Nicolas Immobilier, clients receive tailored advice to improve their DPE before publication.

“A strong DPE rating can increase sale price by up to 15%.”

Save money with diagnostic bundles

Grouped diagnostic packs help cut costs significantly, saving up to 40%. Combining DPE, asbestos, lead, gas and electricity assessments in one visit reduces fees and simplifies the process—ideal when selling in Massy, Palaiseau or Chilly-Mazarin.

Choosing the right inspector

Always select a certified, insured specialist providing full transparency. Beware of suspiciously low prices—below 250 euros, quality usually drops. Inspection quality and time spent on-site are critical for accurate results.

Mandatory checks in 2025

By 2025, sellers must include an extensive diagnostic file (DPE, asbestos, lead, gas, termites where applicable, ERP and Carrez law measurements). The average cost for a mid-sized apartment remains around 300–450 euros.

Free property valuation in Massy

Nicolas Immobilier offers a free property valuation incorporating diagnostic results. This comprehensive analysis determines the ideal listing price based on performance and market trends.
Check out our client testimonials and join over 1,400 satisfied sellers who trusted our team.

Advice from Nicolas Immobilier Massy, Palaiseau and Chilly-Mazarin

Carry out your diagnostics at least a month before listing your property to avoid last-minute costs. Always compare at least three estimates and rely on local experts.
Our team at Nicolas Immobilier collaborates with certified partners to ensure reliable, compliant reports.

About the author
Nicolas Benoit is the director of Nicolas Immobilier in Massy, Palaiseau and Chilly-Mazarin. With over 1400 satisfied clients, he is known for trust, transparency and unmatched market expertise.

key topics

• property price
• DPE cost
• real estate quote
• sales fees
• Massy estimate