partner-contact/partner_address_street3/views/res_partner.xml

<odoo>

    <record id="view_partner_form" model="ir.ui.view">
      <field name="name">add street3 in form view</field>
      <field name="model">res.partner</field>
      <field name="inherit_id" ref="base.view_partner_form"/>
      <field name="arch" type="xml">
        <xpath
            expr="/form/sheet/group/group/div/field[@name='street2']"
            position="after">
          <field name="street3"
                 placeholder="Street 3..."
                 class="o_address_street"
                 attrs="{'readonly': [('type', '=', 'contact'),('parent_id', '!=', False)]}"/>
        </xpath>
        <xpath expr='//field[@name="child_ids"]' position="attributes">
          <attribute name="context" operation="python_dict"
                  key="default_street3">street3</attribute>
        </xpath>
        <xpath expr="/form//field[@name='child_ids']/form//field[@name='street2']"
               position="after">
          <field name="street3" placeholder="Street 3..." class="o_address_street"/>
        </xpath>
        <xpath expr="/form//field[@name='child_ids']/kanban/field[@name='street2']"
               position="after">
          <field name="street3"/>
        </xpath>
      </field>
    </record>

    <record id="res_partner_kanban_view" model="ir.ui.view">
      <field name="name">add street 3 in kanban</field>
      <field name="model">res.partner</field>
      <field name="inherit_id" ref="base.res_partner_kanban_view"/>
      <field name="arch" type="xml">
        <field name="street2" position="after">
          <field name="street3"/>
        </field>
      </field>
    </record>

    <record id="view_partner_address_form" model="ir.ui.view">
      <field name="name">add street 3 in res.partner.form.address</field>
      <field name="model">res.partner</field>
      <field name="inherit_id" ref="base.view_partner_address_form"/>
      <field name="arch" type="xml">
        <field name="street2" position="after">
          <field name="street3" placeholder="Street 3..." class="o_address_street"/>
        </field>
      </field>
    </record>

    <record id="res_partner_view_form_private" model="ir.ui.view">
      <field name="name">add street 3 in res.partner.form.private</field>
      <field name="model">res.partner</field>
      <field name="inherit_id" ref="base.res_partner_view_form_private"/>
      <field name="arch" type="xml">
          <field name="street2" position="after">
              <field name="street3" placeholder="Street 3..." class="o_address_street"/>
          </field>
      </field>
    </record>

</odoo>