Nessell Exclusive
Canton of Geneva · 1213 · Sud du canton
Real estate agency in Onex
Nessell assists owners in Onex with the sale and valuation of their property: 2 references within the commune are presented on this page, between Onex-Cité and les Gros-Chênes. The local market can be measured: 135 sales published over 24 months (see property prices in Onex), and an apartment there changes hands at a median of 9'804 CHF/m². The free online valuation gives you a first price range in a few seconds. You can browse our properties for sale and our reference sales.Nessell SA, founded in 2012 · UID CHE-171.259.807 (Geneva commercial register) · success-based fees
Our referencesOnexSold 
OnexSold
Sold in Onex by Nessell
Nessell Exclusive
Your contact
An expert on the Geneva market, not a call centre
Every mandate in Onex is handled by a dedicated broker, from the valuation to the notarial deed. You always speak to the same person: viewings, negotiation, notary included.
David KnafoFounder of Nessell+41 (0) 22 741 26 26
What a Nessell mandate includes
- A written valuation based on actual sales in the area (FAO / OCSTAT)
- Professional photography and home staging
- Targeted marketing, including off-market for confidential properties
- Calculation of the property gains tax (IBGI) before the sale is launched
- Success-based fees: nothing is due until the sale is signed
The market
Onex in figures
Apartment · median
9'804 CHF/m²
Sud du canton region, OCSTAT 2024
Actual sales · 24 months
135
FAO register, all properties
Median transaction
0.97 M CHF
prices actually paid
Inhabitants
19'141
OCSTAT, end 2025
Vacant homes
33
as of 1 Dec 2025 · tight market
Full analysis (2006-2024 history, latest published sales, taxation): property prices in Onex →
Our sectors
The neighbourhoods of Onex we cover
Each sector of Onex has its own market. We track the published sales neighbourhood by neighbourhood: Onex-Cité, les Gros-Chênes, Belle-Cour. Every valuation draws on the transactions signed in your vicinity.
Frequently asked questions
FAQ — real estate agency in Onex
What is the best real estate agency in Onex?
The right agency is the one that proves its activity within the commune: verifiable recent sales, sourced figures, authentic reviews. Nessell presents 2 references in Onex on this page and 145 Google reviews (4.9/5). Every valuation is based on actually signed sales (FAO register).
How do you check that a real estate agency is trustworthy?
Three simple checks: registration with the commercial register (UID verifiable on Zefix), recent and detailed client reviews, and reference sales the agency can document. Beware of unverifiable figures; ours are linked to their official sources.
How much does a real estate agency cost in Onex?
Nessell's fees are success-based: nothing is due until the sale is signed. The scale depends on the property and the mandate; the details are presented during the valuation, with no commitment.
How long does it take to sell a property in Onex?
The timeframe depends first and foremost on the asking price: it is the number-one factor. The Onex market absorbs around 68 sales per year (FAO, past 24 months); a property positioned in line with recorded sales finds a buyer without stagnating.
No commitment
Have your property in Onex valued
A first online price range in a few seconds, based on the sales signed in your area. You stay in control, with no cold calling.
★★★★★ 4.9/5 · 145 verified Google reviews
Nessell in the neighbouring communes
References presented: genuine Nessell mandates (properties sold and for sale in Onex) · market figures: OCSTAT 2024 vintage, FAO Geneva (harvested 2026-07-02).
A property project in Onex?
Your Nessell advisor