The physical characteristics of SnOx(x≈2) films deposited onto Pyrex glass substrates by chemical vapour deposition are studied. The temperature dependence indicates that films deposited at 600 °C have good polycrystallinity. The electrical conductivity of the 600 °C films is mainly controlled by the variation in the SnCl4 vapour flow rate. A subsequent thermal annealing process can even reduce the sheet resistance to 400ω/□. In addition, the visible absorption shows that the 600 °C films tend to lose their transparency in the short wavelength range of the visible spectrum.