Create Postgres View involving multiple tables - postgresql

Question

Postgres Version 9.4
I already have this query involving two tables namely, surigao_stats_2yr and evidensapp_surigaobldg.
SELECT
province,
municipali AS municipality,
brgy_locat AS barangay,
total_bldg,
(total_bldg - count(id)) as total_not_affected,
count(id) AS total_affected,
count(id) FILTER (WHERE gridcode = 1) AS low,
count(id) FILTER (WHERE gridcode = 2) AS medium,
count(id) FILTER (WHERE gridcode = 3) AS high
FROM (
SELECT
pss.province,ps.id, ps.brgy_locat, ps.municipali,
gridcode, count(pss.id) as total_bldg
FROM surigao_stats_2yr ps
INNER JOIN
evidensapp_surigaobldg pss
ON ps.brgy_locat = pss.brgy_locat
AND ps.municipali = pss.municipali
GROUP BY 1, 2,3, 4, 5
)
AS ps_fh GROUP BY 1,2,3, 4
ORDER BY 1 ASC, 2 ASC
The result of the query above is this:
I wanted to have a view involving another two tables with the same result where it can be filtered by municipality and barangay and sum the total_bldg, total_not_affected, total_affected, low, medium and high if the municipality and barangay is the same.
So far, I have tried this:
CREATE VIEW surigao_del_norte_2yr_affected AS
SELECT
province,
municipality,
barangay,
SUM(total_bldg) as tot_bldg,
SUM(total_not_affected) as tot_not_affect,
SUM(total_affected) as tot_affect,
SUM(low) as lo,
SUM(medium) as med,
SUM(high)as hi
FROM(
WITH surigao AS(
SELECT
province,
municipali AS municipality,
brgy_locat AS barangay,
total_bldg,
(total_bldg - count(id)) as total_not_affected,
count(id) AS total_affected,
count(id) FILTER (WHERE gridcode = 1) AS low,
count(id) FILTER (WHERE gridcode = 2) AS medium,
count(id) FILTER (WHERE gridcode = 3) AS high
FROM (
SELECT
pss.province,ps.id, ps.brgy_locat, ps.municipali,
gridcode, count(pss.id) as total_bldg
FROM surigao_stats_2yr ps
INNER JOIN
evidensapp_surigaobldg pss
ON ps.brgy_locat = pss.brgy_locat
AND ps.municipali = pss.municipali
GROUP BY 1, 2,3, 4, 5
)
AS ps_fh GROUP BY 1,2,3, 4
ORDER BY 1 ASC, 2 ASC
), magallanes AS(
SELECT
province,
municipali AS municipality,
brgy_locat AS barangay,
total_bldg,
(total_bldg - count(id)) as total_not_affected,
count(id) AS total_affected,
count(id) FILTER (WHERE gridcode = 1) AS low,
count(id) FILTER (WHERE gridcode = 2) AS medium,
count(id) FILTER (WHERE gridcode = 3) AS high
FROM (
SELECT
pss.province,ps.id, ps.brgy_locat, ps.municipali,
gridcode, count(pss.id) as total_bldg
FROM magallanes_stats_2yr ps
INNER JOIN
evidensapp_magallanesbldg pss
ON ps.brgy_locat = pss.brgy_locat
AND ps.municipali = pss.municipali
GROUP BY 1, 2,3, 4, 5
)
AS ps_fh GROUP BY 1,2,3, 4
ORDER BY 1 ASC, 2 ASC
), mainit AS(
SELECT
province,
municipali AS municipality,
brgy_locat AS barangay,
total_bldg,
(total_bldg - count(id)) as total_not_affected,
count(id) AS total_affected,
count(id) FILTER (WHERE gridcode = 1) AS low,
count(id) FILTER (WHERE gridcode = 2) AS medium,
count(id) FILTER (WHERE gridcode = 3) AS high
FROM (
SELECT
pss.province,ps.id, ps.brgy_locat, ps.municipali,
gridcode, count(pss.id) as total_bldg
FROM mainit_tubay_stats_2yr ps
INNER JOIN
evidensapp_mainittubaybldg pss
ON ps.brgy_locat = pss.brgy_locat
AND ps.municipali = pss.municipali
WHERE province='Surigao del Norte'
GROUP BY 1, 2,3, 4, 5
)
AS ps_fh GROUP BY 1,2,3, 4
ORDER BY 1 ASC, 2 ASC
)
TABLE surigao
UNION ALL
TABLE magallanes
UNION ALL
TABLE mainit
) surigao_2yr
--WHERE municipality ='Placer'
--AND barangay = 'Santa Cruz'
GROUP BY 1,2,3
ORDER BY 2
SELECT *FROM surigao_del_norte_2yr_affected WHERE municipality ='Placer' AND barangay = 'Santa Cruz'
The performance is quite slow and I want to know if the values mentioned above is added with the query I had.
Thanks.