New janitorial services contract proposal

You're given the following tables showing information around a company’s real estate portfolio. The tables provide information on building size and total cost.

Table: building_info;

building_id	sqft	num_rooms	num_bathrooms
1	46265	46	12
2	98003	98	25
3	12092	12	3
4	61173	61	15
5	534	1	0
6	47531	48	12
7	62581	63	16
8	49242	49	12
9	89990	90	23
10	75499	75	19
11	12904	13	3
12	85078	85	21
13	88441	88	22
14	98556	99	25
15	51721	52	13
16	90338	90	23
17	67783	68	17
18	76245	76	19
19	15601	16	4
20	41703	42	11
21	80154	80	20
22	65819	66	17

Table: building_cost

building_id	rent	janitorial
1	184314	2654
2	65486	1372
3	52891	2145
4	113357	1688
5	2362	32
6	327317	28770
7	108578	2701
8	181283	2086
9	786845	10904
10	589682	6259
11	11765	441
12	752330	13453
13	201431	42431
14	387695	6465
15	145237	1836
16	708348	10147
17	277285	3170
18	76699	816
19	84056	999
20	52677	981
21	723244	8425
22	72481	5836

Suppose your company is offered a new janitorial deal with an outside firm, who is offering cleaning services at a flat rate of $50 per bathroom and $25 per room (paid monthly). Is this a deal your company should consider taking?

Our solution will be written in SQL for premium users. You can view/query this table in an interactive SQL fiddle here.