Ellen Korpi writes:

"Is there any way to correlate the Lviv house numbers >from the 1800s
with actual locations to see which houses were in the same
neighborhood?"

The answer is yes, but the research involves a variety of sources,
including taking into account the dates of records.

You can do a surname or house number search with the online directory
for Lwow, published in 1871/2 that shows the correspondence between
the old house numbers and the new street addresses. (This revision
took place in 1871 with many old street names updated.)

It's important to note that street names were revised again during
WWII and it is also possible that house/street renumbering might have
taken place if you want to match a current map. Nevertheless, by
finding the street name and approximate location that corresponds to
an older map, you can study the current map to determine the location.

A very thorough analysis of how to research house numbers and street
addresses in Lwow/Lvov/Lemberg/Lviv is provided by Logan Kleinwaks
here:

http://genealogyindexer.org/forum/viewtopic.php?t=118

You can look up names and addresses in the 1871/72 Lwow Directory
here: http://genealogyindexer.org/frame/d49/272/d

Or go to the home page of GenealogyIndexer here:
http://www.genealogyindexer.org and search for "Lwow 1871." You
need a specific plug-in to view the directories, details are explained
on the site.

The directory is organized by residents on each street and provides
the "Dawny numer" -- the old house number -- which should be what
appears on metrical records and would correspond to a pre-1871
cadastral map. The directory links the new street name and number to
this old house number. (Note that families in Lwow also had an
"ordinal" or family number assigned to them as part of the Lwow Book
of Residents or Evidence Book (available on LDS Microfilm and in the
archives) and that this number is different >from the house number
indicating their place of residence. The Lviv vital records indexed on
the All Galicia Database, which are in Lviv, will have both of these
numbers listed. The JRI Poland records >from AGAD, do not provide
house or ordinal numbers in the indices, but if you view the online
images or the records or order copies, you should find them.

This directory is quite useful in identifying the location based on
old house numbers found in documents. Keep in mind that the fractions
you also see are not apartment numbers, but refer to the districts in
Lwow at that time: 1/4, 4/4, etc. , which refer to: Srodmiescie,
Halickie, Krakowskie, Zolkiewskie, Lyczakowskie. Today, however,
Lviv today is divided into different districts.

Here is one example >from the 1871 directory:

At #5 Ul. Ormianska (which is the street's new name, the old name was
Ul. Uniwersytecka) we find Bach, Abraham Leib. The old house number
listed was #115. So now you've matched the house number to the old
street name and the new street name.

The Gesher Galicia Map Room has several Lviv street maps, but no
cadastral maps showing house numbers yet:
http://maps.geshergalicia.org.

On the Gesher Galicia website, as part of the Lviv House & Street
Photography Project, we have photographed many of these addresses.
Here is the link to this web page where you can read about the project
and scroll down for an alphabetical listings of streets we have
photographed:

http://www.geshergalicia.org/projects/the-lviv-house-and-street-photography-project/

See the Center for Urban History's website for a selection of maps.
Here is the page for Lviv maps:
http://www.lvivcenter.org/en/umd/location/lviv/

This map pertains to your specific question. It is called: "Plan of
the Royal and Capital City of Lwow with Data on New Names of Streets
and Squares."

http://www.lvivcenter.org/en/umd/map/?ci_mapid=126

The Center for Urban History also has details on certain streets in
the Jewish district of Krakowskie, with explanations like the
following which show you the many layers of the city you need to
examine to link old house numbers with various street addresses
throughout the years:

Sianska Street lies in the Halytskyi rayon (district) of the city,
between Khmelnytskoho Street and Lazneva Street. Up to 1871 the street
was known as Synagogi Street, later as Boznicza Street, and, in
1942-1944, as Trodlergasse. Boznicza Street was the main street of the
Jewish district in the Krakowskie przedmiescie (Krakivske peredmistia,
Cracow outer district). >from 1945 the street was known under the name
of Sianska, >from the name of the river Sian (San in Polish). The
original stone pavement of the street is partly preserved, and was
re-laid in 2008.

Here is a link to the page where this information appears:
http://www.lvivcenter.org/en/lia/description/?ci_objectid=231

To make sense of all of this it is helpful to list all the information
about a person or family in an Excel chart, by year and record, to
compare. Some work is involved, but there are enough directories,
maps, documents and resources to determine the exact location (then
and now) for people and residences in Lviv. You can then pinpoint
each house you are researching on a single map to see which family
members lived near each other.

Pamela Weisberger
President, Gesher Galicia
pweisberger@...