Redirect back with errors

I have a controller:

controller/streets_controller.rb

class StreetsController < ApplicationController
  before_action :set_street, only: [:show, :edit, :update, :destroy]

  def show
    @house = @street.houses.build
  end

  .......

And a view for that show action. There I also display a form to create new street houses:

views/streets/show.html.erb

<h1>Street</h1>
<p>@street.name</p>

<%= render '/houses/form', house: @house %>

When somebody submits the houses/form the request goes to the houses_controller.rb

class HousesController < ApplicationController

  def create
    @house = House.new(house_params)

    respond_to do |format|
      if @house.save
        format.html { redirect_back(fallback_location: streets_path) }
        format.json { render :show, status: :created, location: @house }
      else
        format.html { redirect_back(fallback_location: streets_path) }
        format.json { render json: @house.errors, status: :unprocessable_entity }
      end
    end
  end

So far it works that when somebody inserts correct house_params it redirects back and creates the house correctly

But when somebody inserts wrong house_params it redirects_back but it doesn't show the house errors in the form, it shows the form for a new house @house = @street.houses.build

How can I redirect to the StreetsController with the @house object, so that the errors are shown and also the house form is filled?

Thanks