kinou hudousanya de eki no tikaku no bukken wo mittu mimasita.

Because きのう is a time word that usually does not need a particle like に.

So:

• きのう 見ました = I saw [them] yesterday
• あした 行きます = I will go tomorrow

In Japanese, certain everyday time expressions such as きのう, きょう, あした, 先週, and 去年 often appear with no particle.

Using に after きのう is generally unnatural in normal modern Japanese.

不動産屋 means real estate agency, real estate office, or sometimes real estate agent, depending on context.

It is made up of:

• 不動産 = real estate
• 屋 = shop / seller / person in that line of business

So literally it is something like real-estate shop.

The ending 屋 is very common in Japanese words:

• 本屋 = bookstore / bookseller
• 花屋 = flower shop / florist
• パン屋 = bakery / baker

In this sentence, 不動産屋で most naturally means at the real estate agency.

で marks the place where an action happens.

Here, the action is 見ました (saw / looked at), so:

• 不動産屋で 見ました = looked at [them] at the real estate agency

This suggests the viewing happened there, probably by looking at listings, photos, or information in the office.

Compare:

• 学校で 勉強します = study at school
• 店で 買いました = bought it at the store

So で is not marking direction or destination here. It marks the location of the action.

This is a chain of nouns and noun-like expressions modifying another noun.

Break it down like this:

• 駅 = station
• 駅の近く = the area near the station
• 駅の近くの物件 = properties near the station

The first の connects station to nearby area:

• 駅の近く = near the station

The second の connects that whole phrase to 物件:

• 駅の近くの物件 = properties that are near the station

So the structure is:

[station] の [nearby area] の [property]

This kind of chaining is very common in Japanese.

近い is an i-adjective meaning near.

But in this sentence, Japanese uses the noun-like form 近く, which means nearby area / vicinity.

So:

• 駅が近い物件 = a property for which the station is near
• 駅の近くの物件 = a property in the area near the station

Both are possible, but 駅の近くの物件 is a very natural and common real-estate style expression.

You can think of 近く here as meaning the neighborhood around the station.

物件 is a common real-estate word meaning property or listing.

It is broader and more neutral than words like:

• 家 = house / home
• アパート = apartment building / apartment
• マンション = condo / apartment building

A 物件 could be:

• an apartment
• a house
• a condo
• a rental unit
• a property listing in general

So in a real-estate context, 物件 is often the most natural choice.

Yes, 三件 would also be possible, and many learners wonder about that.

• 三つ is a very general counter meaning three things
• 件 is a more specific counter often used for cases, matters, and also properties/listings in real-estate contexts

So:

• 物件を三つ見ました = I saw three properties
• 物件を三件見ました = I saw three property listings / three properties

三件 sounds a bit more specific and professional in a real-estate setting. 三つ is simpler and very understandable.

For learners, it is useful to know that Japanese often allows either a general counter or a more specialized one, depending on context.

を marks the direct object of the verb.

The verb is 見ました (saw / looked at), and the thing being seen is 駅の近くの物件.

So:

• 物件を見ました = saw/looked at the properties

This is the normal particle used with verbs like:

• 本を読みます = read a book
• 映画を見ます = watch a movie
• パンを食べます = eat bread

In this sentence, 見ました most naturally means looked at or viewed.

The verb 見る has a wide range of meanings depending on context:

• 映画を見る = watch a movie
• 鳥を見る = see a bird
• 資料を見る = look at materials
• 物件を見る = look at / inspect / view properties

In a real-estate sentence, English often translates it as:

• looked at three properties
• viewed three properties

rather than simply saw three properties, although saw is not wrong.

Japanese word order is much more flexible than English, but it often follows this general pattern:

Time + place + modifiers + object + verb

In this sentence:

• きのう = time
• 不動産屋で = place of action
• 駅の近くの物件を = object
• 三つ = quantity
• 見ました = verb

The verb usually comes at the end in Japanese.

A very literal ordering would be:

Yesterday, at the real estate agency, station-near properties, three, looked at.

That sounds strange in English, but it is perfectly normal in Japanese.

Yes. Japanese often omits the topic when it is already understood from context.

For example, the full idea might be:

• 私は きのう 不動産屋で 駅の近くの物件を 三つ 見ました。
  • I looked at three properties near the station at the real estate agency yesterday.

But Japanese frequently drops 私は because the subject is obvious.

You could also make きのう the topic in some contexts:

• きのうは 不動産屋で 駅の近くの物件を 三つ 見ました。

This gives yesterday a little more emphasis, as in As for yesterday...

So the version without は is natural and concise.

Not necessarily.

Because the sentence says 不動産屋で (at the real estate agency), it often suggests the speaker looked at the properties in the agency, probably through:

• listings
• brochures
• photos
• online information shown by the agent

If the speaker actually went to the properties themselves, Japanese might use wording that makes that clearer, such as a form of 内見する or a phrase showing they went there in person.

So this sentence most naturally suggests reviewing or viewing property listings at the real estate office, not definitely physically touring all three places.