Flutter Material Custom Card Stack View

FlutterStack.dart

class HousePickerView extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return new GradientAppBar('Houses',
      new ListView(
        children: <Widget>[
          new HouseListTile(url: [
            'https://statusandphoto.weebly.com/uploads/6/0/1/5/60158603/8347592_orig.png',
            'http://globalmedicalco.com/photos/globalmedicalco/20/98181.jpg',
            'https://allinonetricks.com/wp-content/uploads/2017/08/5-7.png'
          ],),
          new HouseListTile(url: [
            'https://statusandphoto.weebly.com/uploads/6/0/1/5/60158603/8347592_orig.png',
            'http://globalmedicalco.com/photos/globalmedicalco/20/98181.jpg',
            'https://allinonetricks.com/wp-content/uploads/2017/08/5-7.png'
          ],)
        ],
      )
    );
  }
}
class HouseListTile extends StatelessWidget {
  final List<String> url;
  HouseListTile({this.url});
  @override
  Widget build(BuildContext context) {
    final screenwidth = MediaQuery
        .of(context).size.width;
    return new Container(
      margin: new EdgeInsets.fromLTRB(20.0, 0.0, 20.0, 20.0),
      decoration: new BoxDecoration(
        borderRadius: new BorderRadius.circular(15.0),
        image: new DecorationImage(
          fit: BoxFit.fill,
          image: new AssetImage('add appropriate asset'),
        ),
        ),
        height: screenwidth/2,
        child: new Stack(
          children: <Widget>[
            new Container(
                margin: new EdgeInsets.fromLTRB(0.0, screenwidth/4, 0.0, 0.0),
                height: screenwidth/4,
                decoration: new BoxDecoration(
                    boxShadow: [
                      new BoxShadow(color: Colors.grey[300], offset: new Offset(0.0, 1.0), spreadRadius: 1.0, blurRadius: 1.0)
                    ],
                    borderRadius: new BorderRadius.only(bottomLeft: Radius.circular(15.0), bottomRight: Radius.circular(15.0)),
                    color: Colors.white,
                ),
                child: new Container(
                  height: screenwidth/4,
                  width: screenwidth,
                  padding: new EdgeInsets.fromLTRB(15.0, 0.0, 0.0, 0.0),
                  child: new Column(

                    mainAxisAlignment: MainAxisAlignment.center,
                    crossAxisAlignment: CrossAxisAlignment.start,
                    children: <Widget>[
                      new Container(
                        padding: new EdgeInsets.fromLTRB(0.0, 0.0, 0.0, 7.0),
                        child: new Text(
                          'Some random text',
                          style: new TextStyle(fontFamily: "Montserrat-SemiBold", fontSize: 20.0),
                        ),
                      ),
                      new ProfileImageRow(urls: url),
                      ]
                    ,)
                  )
            ),
            new Container(
                margin: new EdgeInsets.fromLTRB(screenwidth*0.7, screenwidth/4 - 28.0, 0.0, 0.0),
                child: new FloatingActionButton(onPressed: (){},
                backgroundColor: Colors.green[400],
                child: new ImageIcon(new AssetImage('add appropriate asset'), color: Colors.white, size: 25.0),
              )
            ),
          ]
        ),
    );
  }
}