I don't know specifics on how Zillow, etc acquired their data - other than assuming they (or 3rd party) obtains the data on a per county basis.
As cities/counties open up open data portals, this data will become more accessible to developers.
When searching these portals, you want to look for tax lots, property tax, or parcels.
A lot of these datasets are ...
The link below lists all SF municipal websites that provide public datasets related to property. I do not know if any of these datasets have ownership records.
I just found some more information from the city website sf311:
Assessor-Recorder - Owner of Property in San ...
Census data isn't going to provide information on individual buildings, but will provide summary data for the buildings within small geographic areas. For example, in the 5 year American Community Survey you can get the median year houses were built or the number of houses built in each decade at the census tract level.
For data on individual buildings, the ...
You're probably going to need to get information from many jurisdictions - at least in the US, there is not a good/granular sources for property tax, crime, and other information for all states in one dataset.
For crime data, check out FBI UCR reports which are usually not granular. Each city may (hopefully) report their own data. Try google and/or http://...
You are looking for the property appraiser's office for each county to assemble the data for free. Anything above this level is going to be a cost item.
For example, the Polk County Property Appraiser's office has the Appraisal Data and the GIS Data at the Parcel Level. The Appraisal Data includes the sales database from which to pull your data.
Metro Vancouver has an open data catalogue
These geo datasets are available:
Frequent Transit Development Areas
Metro 2040 Land Designation
Metro 2040 Urban Containment
Metro Vancouver Regional Park Trails
Private Licensed Solid Waste Facilities
Public Solid Waste Facilities
Special Study ...
I work for an appraisal district and can say that the discrepancy between your deed record and the appraisal record comes from how the appraisal database is maintained. All real property accounts have an account number of some kind, and this can vary widely by county.
Essentially, it is because there is a lack of standard(s) and best practices around the ...
If you are interested in using shapefile data and have access to QGIS or ArcGIS, this geodatabase contains geographic, demographic, and economic data for Places or "Cities" from the 2010 to 2014 ACS (The most current data as of December 1st, 2016). Be sure to find your variables of interest through the Metadata/Data Dictionary (although in your case, the ...
The Census API is pretty good and should have what you're looking for. If you want only recent data, you can use the ACS to get 2014 data. If you want more historical data, the 1990, 2000, and 2010 are all exposed via the API.
HUD offers a lot of rent related information (by County). For example, the 50th percentile estimates contain the medium rent per studio, 1, 2 and 3 bedrooms per county.
I also keep a copy, converted to our linked CSV vocabulary, of some of these datasets here:
Zillow is an online real estate database company and offers research data which is aggregated, and you may find meets some of your needs.
Daniel Miller's answer recommending property appraiser's offices is great, and if your need is confined to a couple of counties, it's not too much work to locate each dataset. However, if you need this information on a nationwide basis, hunting down every single appraiser's data is incredibly tedious.
An alternative is something like the Zillow API. Zillow ...
This might be helpful for other people if not for OP.
The problem here is that US Census data is based on census tracts, not zip codes. So for the US here is HUD "crosswalk" data from www.Huduser.gov that converts zip codes to census tracts, and vice versa. This will get you part way there, and may be very useful for other people. It's also recent, as of ...
Living Wage Calculator by MIT provides cost of living data down to locality, which you could mesh into zip codes, but since zip codes are not unique to a locality, you'd have to give or take something. perhaps use census zcta's? I'm not 100% on that, that's just the first thing that comes to mind. I don't see any bulk download options, but they do use a ...
Historical graph of US new housing starts. It measures the building of new houses. Which isn't as telling as it used to be because in some cases, in some areas, it's cheaper to build a brand new house then fix up an old one.
Existing US home sales. Monthly graph and you can "stretch" the time span you want like the Google stock graphs.
And a search for ...
Doubt you'll find it all in one place, without visiting a city office, but here's some help:
City Lots shapefiles
San Francisco Housing Authority Lots
Now you have all of the ...
Affordable housing is difficult to track as there are intricacies to the process: Is it Housing Choice Voucher Program (Previously Section 8), is it a an established property that specifically handles affordable housing (which the government pays a private enterprise to operate), or is it public housing.
You should look at property appraiser data for each ...
Assessors Parcel numbers in the US are assigned within specific jurisdictions (usually counties, which are smaller than states and often larger than cities or towns). Within a single jurisdiction they will have a consistent format and be unique, but across multiple jurisdictions you have no such guarantee and will likely see a fair amount of variance in ...
This data-request is very interesting but not trivial at all. (Hence, the somewhat late answer.)
What you refer to as subjective price, economists would often call reservation price. The reservation price is the maximal price a person would pay for a good, or put differently, her valuation for that good. As you rightly observed when you called it the ...
nationwide, the biggest and best data set you're going to get is
but if you can use a survey instead, start with
and check other surveys on asdfree.com that have household-level statistics like acs, nychvs, and ...
Quandl has some free real estate data:
The Zillow database shows home prices and rents by size, type and tier, housing supply, demand and sales etc: https://www.quandl.com/data/ZILL
The National Association of Realtors database shows average and median home prices by area and dwelling type: https://www.quandl.com/data/NAR
The Freddie Mac database shows ...
The property appraisers from each county are able to provide this data.
Additionally, this previous answer had some information: Looking for home sale data
Taken from this post (How to construct a database with the underlying real estate data displayed by Redfin, Zillow, or Trulia?
The American Community Survey has table B25034, which has columns for each decade from the 1940's to current (and another for "1939 or earlier"). Each column estimates the number of housing units in the given geography built in that decade.
You can download this data as GIS from Census Reporter, and probably also from American FactFinder.
For reference, ...
I'm the head researcher for a commerical real estate brokerage firm. I don't know of a perfect source for what you are looking for, but here are some proxys you might try
Paid option: Costar
http://www.costar.com/ has what some of what you want, but they are a pay-for service. From time to time I've heard of them gifting data access for research purposes. I ...
For final house prices in the UK, the HMLR (Her Majesties Land Registry) office deals with land ownership, usage and boundary issues along with other miscellaneous land related issues.
For the data, you need to go to the land registry section in data.gov.uk portal.
With regard to bids/offers etc. these are not available afaik and i'm not sure how you would ...
Some kind soul scraped the newspaper listings and put the results on github here.
However, several of the things you ask are much more involved, require analysis and subjective judgment to furninsh, and won't be found in standard real estate datasets. For example, Quality of neighborhood can mean any number of things, even for hedonic modeling purposes. ...
In Australia, a federal government agency (PSMA) has created a for-cost dataset called Geoscape that calculates information on private rooftops: specifically roof heights and materials.
I wanted to post this as an answer to show a precedent for private rooftop characteristics and locations, albeit for a cost.
The U.S. Census Bureau's American Community Survey has information on rental and purchase prices but it's aggregated at various levels.
You can get detailed parcel level information about prices paid for real estate from most county assessor's offices, but there is no state or nationwide source of this information, and the U.S. has IIRC 3000 counties.