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1\begin{table}[htbp]2\centering\small3\caption{Stage-1 robust hedonic regressions (selected coefficients; dependent variable log price)}\label{tab:stage1}4\begin{threeparttable}56\begin{tabular}{lrrr}7\toprule8Regressor & Houses & Condominiums & Plexes \\9\midrule10log floor area (centred) & 0.418 & 0.697 & 0.326 \\11log floor area$^2$ & 0.039 & 0.107 & -0.015 \\12log floor area$^3$ & 0.048 & -0.017 & -0.025 \\13log lot area (centred) & 0.131 & 0.043 & 0.144 \\14log lot area$^2$ & -0.006 & -0.018 & -0.002 \\15Age 2–5 & 0.182 & 0.014 & 0.205 \\16Age 11–20 & 0.076 & -0.127 & 0.022 \\17Age 21–40 & -0.039 & -0.219 & -0.130 \\18Age 61–80 & -0.281 & -0.222 & -0.342 \\19Age 120+ & -0.365 & -0.201 & -0.429 \\20Two storeys & -0.039 & 0.017 & 0.043 \\21Semi-detached & -0.091 & — & — \\22Row & -0.131 & — & — \\23Triplex & — & — & 0.066 \\245 units & — & — & 0.207 \\25log floor area $\times$ time & -0.134 & -0.091 & -0.119 \\26log lot area $\times$ time & 0.046 & 0.123 & 0.085 \\27Floor area missing & -0.088 & -0.095 & 0.064 \\28Age missing & -0.088 & -0.039 & -0.088 \\29Observations & 422{,}196 & 122{,}914 & 86{,}245 \\30Robust residual s.d. & 0.185 & 0.134 & 0.214 \\31Within $R^2$ & 0.533 & 0.629 & 0.480 \\32\bottomrule33\end{tabular}34\begin{tablenotes}\footnotesize\item Huber-IRLS ($k=1.345$) with fine-location fixed effects (nested metric grid, finest cell with at least 15 sales) and month effects; time index $tt$ runs from $-0.5$ (January 2021) to $0.5$ (October 2026). Full coefficient lists in results/panel/stage1\_meta.json.\end{tablenotes}35\end{threeparttable}36\end{table}37