Diwali 2025 brings the sweetest buyer incentives since 2012. Our tracker lists 18 Navi-Mumbai projects offering free stamp-duty (₹1.2–2.5 L saving), 24-month subvention, gold coins (10–30 g) and free modular kitchen. Top picks: Godrej Nest Kharghar (stamp-duty + 25 g gold), Marathon Nexworld Panvel (2-year rent guarantee), L&T Seawoods Residences (waiver of 18-month maintenance). We crunch the effective discount: ₹4.8 L on ₹1 Cr flat. But read the fine print—some offers apply only on 3 BHK inventory or full down-payment. Download the comparison excel & legal checklist. Keywords: Diwali property offers 2025, stamp-duty waiver Navi Mumbai, festive discount.