Limit relation by common attribute

Question

I am working on Laravel and I have 3 tables (users, administrations and immobles).

I would like to know, what would be the best way to relate (associate) users and properties that belong to the same administration ?

What would be the best way to separate them by administration, by a middleware and routes, with a simple function? That is, how do I for users who have the same admin id see only the properties that also have this admin id ?

Below is the structure of my models and their current relationships:

Model Administração:

<?php

namespace App\Models\Painel;

use Illuminate\Database\Eloquent\Model;
use App\User;

class AdministracaoComunal extends Model
{
    protected $table = 'administracoes_comunais';

    protected $fillable = [
        'nome'
    ];

    public $timestamps = false;


    // Relacionamnto OneToMany (os usuarios que estão vinculados a uma administracao)
    public function users()
    {
        return $this->hasMany(User::class);
    }

    // Relacionamnto OneToMany (os imoveis que estão vinculados a uma administracao)
    public function imoveis()
    {
        return $this->hasMany(Imovel::class, 'administracao_comunal_id');
    }
}

Model User:

<?php

namespace App;

use Illuminate\Notifications\Notifiable;
use Illuminate\Foundation\Auth\User as Authenticatable;
use App\Models\Painel\AdministracaoComunal;

class User extends Authenticatable
{
    use Notifiable;

    protected $fillable = [
        'name', 'email', 'password',
    ];

    protected $hidden = [
        'password', 'remember_token',
    ];

    public function administracaoComnunal(){
        return $this->belongsTo(AdministracaoComunal::class);
    }

    public function roles()
    {
        return $this->belongsToMany(\App\Role::class);
    }

    public function hasPermission(Permission $permission)
    {
        return $this->hasAnyRoles($permission->roles);
    }

    public function hasAnyRoles($roles)
    {
        // Se tiver mais de um papel cai nesse loop
        if (is_array($roles) || is_object($roles)) {
            return !! $roles->intersect($this->roles)->count();
        }
        // Se tiver um papel retorna diretamente aqui
        return $this->roles->contains('funcao', $roles);
    }
}

Model Imovel:

<?php namespace App\Models\Painel;

use Illuminate\Database\Eloquent\Model;
use App\User;

class Imovel extends Model
{
    protected $table = 'imoveis';

    protected $fillable = [
        'matricula',
        'finalidade',
        'tipo_imovel',
        'qtd_comodos',
        'largura',
        'comprimento',
        'longitude',
        'latitude',
        'provincia',
        'municipio',
        'distrito_comuna',
        'bairro',
        'rua',
        'n_casa',
        'numero_escritura',
        'data_criacao',
        'situacao_licenca',
        'situacao_ocupacao',
        'valor_imovel',
        'valor_aluguel',
        'valor_patrimonial',
        'administracao_comunal_id',
    ];

    public function administracaoComunal()
    {
        //
        return $this->belongsTo(AdministracaoComunal::class, 'administracao_comunal_id');
    }

    public function users()
    {
        //
        return $this->belongsToMany(User::class, 'user_imovel');
    }

    public function proprietarioSingular()
    {
        //
        return $this->belongsToMany(ProprietarioSingular::class, 'imovel_proprietario_singular');
    }

    public function proprietarioColetivo()
    {
        //
        return $this->belongsToMany(ProprietarioColetivo::class, 'imovel_proprietario_coletivo');
    }
}