High Performance Building Database
nrel · Data
The Buildings Database is a shared resource for the building industry. The Database, developed by the U.S. Department of Energy and the National Renewable Energy Laboratory (NREL), is a unique central repository of in-depth information and data on high-performance, green building projects across the United States and abroad.
Authentication
No authentication requiredFree to use with no key needed.
Sample Requests
GET
A filterable list of projects.
A filterable list of projects.
https://api.apis.guru/v2/specs/nrel.gov/building-case-studies/1.0/project.{output_format}?city=London&page=1&portal=example®ion=us-east-1&search=hello&api_key=DEMO_KEY&province=example
Hover any highlighted part to learn what it does
curl -X GET "https://api.apis.guru/v2/specs/nrel.gov/building-case-studies/1.0/project.{output_format}?city=London&page=1&portal=example®ion=us-east-1&search=hello&api_key=DEMO_KEY&province=example"import requests
params = {
"city": "London",
"page": "1",
"portal": "example",
"region": "us-east-1",
"search": "hello",
"api_key": "DEMO_KEY",
"province": "example"
}
response = requests.get(
"https://api.apis.guru/v2/specs/nrel.gov/building-case-studies/1.0/project.{output_format}",
params=params,
)
print(response.json())const url = new URL('https://api.apis.guru/v2/specs/nrel.gov/building-case-studies/1.0/project.{output_format}');
url.searchParams.set('city', 'London');
url.searchParams.set('page', '1');
url.searchParams.set('portal', 'example');
url.searchParams.set('region', 'us-east-1');
url.searchParams.set('search', 'hello');
url.searchParams.set('api_key', 'DEMO_KEY');
url.searchParams.set('province', 'example');
const response = await fetch(url);
const data = await response.json();
console.log(data);package main
import (
"fmt"
"io"
"net/http"
"net/url"
)
func main() {
baseURL, _ := url.Parse("https://api.apis.guru/v2/specs/nrel.gov/building-case-studies/1.0/project.{output_format}")
q := baseURL.Query()
q.Set("city", "London")
q.Set("page", "1")
q.Set("portal", "example")
q.Set("region", "us-east-1")
q.Set("search", "hello")
q.Set("api_key", "DEMO_KEY")
q.Set("province", "example")
baseURL.RawQuery = q.Encode()
targetURL := baseURL.String()
req, _ := http.NewRequest("GET", targetURL, nil)
client := &http.Client{}
resp, _ := client.Do(req)
defer resp.Body.Close()
body, _ := io.ReadAll(resp.Body)
fmt.Println(string(body))
}require "net/http"
require "json"
uri = URI("https://api.apis.guru/v2/specs/nrel.gov/building-case-studies/1.0/project.{output_format}")
uri.query = URI.encode_www_form({
"city" => "London",
"page" => "1",
"portal" => "example",
"region" => "us-east-1",
"search" => "hello",
"api_key" => "DEMO_KEY",
"province" => "example"
})
http = Net::HTTP.new(uri.host, uri.port)
http.use_ssl = uri.scheme == "https"
req = Net::HTTP::Get.new(uri)
res = http.request(req)
puts JSON.parse(res.body)<?php
$url = "https://api.apis.guru/v2/specs/nrel.gov/building-case-studies/1.0/project.{output_format}?" . http_build_query([
"city" => "London",
"page" => "1",
"portal" => "example",
"region" => "us-east-1",
"search" => "hello",
"api_key" => "DEMO_KEY",
"province" => "example"
]);
$opts = ["http" => [
"method" => "GET",
]];
$ctx = stream_context_create($opts);
$res = file_get_contents($url, false, $ctx);
print_r(json_decode($res, true));
GET
Project Details
Project Details
https://api.apis.guru/v2/specs/nrel.gov/building-case-studies/1.0/project/{project_id}.{output_format}?api_key=DEMO_KEY
Hover any highlighted part to learn what it does
curl -X GET "https://api.apis.guru/v2/specs/nrel.gov/building-case-studies/1.0/project/{project_id}.{output_format}?api_key=DEMO_KEY"import requests
params = {
"api_key": "DEMO_KEY"
}
response = requests.get(
"https://api.apis.guru/v2/specs/nrel.gov/building-case-studies/1.0/project/{project_id}.{output_format}",
params=params,
)
print(response.json())const url = new URL('https://api.apis.guru/v2/specs/nrel.gov/building-case-studies/1.0/project/{project_id}.{output_format}');
url.searchParams.set('api_key', 'DEMO_KEY');
const response = await fetch(url);
const data = await response.json();
console.log(data);package main
import (
"fmt"
"io"
"net/http"
"net/url"
)
func main() {
baseURL, _ := url.Parse("https://api.apis.guru/v2/specs/nrel.gov/building-case-studies/1.0/project/{project_id}.{output_format}")
q := baseURL.Query()
q.Set("api_key", "DEMO_KEY")
baseURL.RawQuery = q.Encode()
targetURL := baseURL.String()
req, _ := http.NewRequest("GET", targetURL, nil)
client := &http.Client{}
resp, _ := client.Do(req)
defer resp.Body.Close()
body, _ := io.ReadAll(resp.Body)
fmt.Println(string(body))
}require "net/http"
require "json"
uri = URI("https://api.apis.guru/v2/specs/nrel.gov/building-case-studies/1.0/project/{project_id}.{output_format}")
uri.query = URI.encode_www_form({
"api_key" => "DEMO_KEY"
})
http = Net::HTTP.new(uri.host, uri.port)
http.use_ssl = uri.scheme == "https"
req = Net::HTTP::Get.new(uri)
res = http.request(req)
puts JSON.parse(res.body)<?php
$url = "https://api.apis.guru/v2/specs/nrel.gov/building-case-studies/1.0/project/{project_id}.{output_format}?" . http_build_query([
"api_key" => "DEMO_KEY"
]);
$opts = ["http" => [
"method" => "GET",
]];
$ctx = stream_context_create($opts);
$res = file_get_contents($url, false, $ctx);
print_r(json_decode($res, true));Postman Setup Guide
- See official documentation for authentication and setup.
What can you build with High Performance Building Database?
High Performance Building Database is a Data API. Developers commonly use data APIs for:
- enriching your app with third-party datasets
- building data pipelines and ETL workflows
- querying and searching large datasets
- powering research, analysis, and reporting tools
- syncing reference data into your own systems
No authentication required. This API is open — no signup or key needed. Ideal for quick prototypes and public-facing features. High Performance Building Database is free to use, making it a low-risk choice to experiment with.
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