Free, really gorgeous houses are available from Atelier Yllanys. The in-world shop (SLurl below) has a treehouse and an airy cottage or the latter can be found on the SL Marketplace, too (see pic).
|Treehouse available in-store has a scripted door as well as scripted lights and windows.|
|89 prims in a rez box, little fishy included plus scripted windows and lights and a lockable door.|
The Minuet home on the SL Marketplace https://marketplace.secondlife.com/p/Minuet-Free-Home/2682961
http://maps.secondlife.com/secondlife/Viale%20Vibrante/192/241/24 for both.